Answer:
93%
Step-by-step explanation:
Answer:
1.45 x 5 is the answer but i want you to do some work for it and if its wrong im sorry but thats what i calculated it as
Step-by-step explanation:
bowl contains red balls and blue balls. a woman selects balls at random without looking at them. (a) how many balls must she select (minimum) to be sure of having at least three blue balls? (b) how many balls must she select (minimum) to be sure of having at least three balls of the same color?
Part a: least three balls of the same color: 5
Part b: least three blue balls; 13
Define the term pigeonholes principle?This pigeonhole principle is among mathematics' simplest but then most useful principles, and it can help us here. A simplified form states if (N+1) pigeons inhabit N holes, then each hole must contain at least two pigeons. If 5 pigeons occupied 4 holes, there must be at least one hole from at least 2 pigeons.There are 20 balls, 50 per cent of which are red and half of which are blue.
Part a: least three balls of the same color:
The pigeonholes are now the colors x/2 must equal three, and the smallest positive integer that will satisfy this equation is 5.
Part b: least three blue balls;
Because the first 10 selections could all consist of red balls, the woman must select a minimum of 13 balls to ensure that at least three of them are blue.
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The correct question is-
A bowl contains 10 red balls and 10 blue balls. A woman selects balls at random without looking at them.
a) How many balls must she select to be sure of having at least three balls of the same color?
b) How many balls must she select to be sure of having at least three blue balls?
80 POINTS! Help with this question please!!!! 80 POINTS!
Answer:
C. Translation 5 units left and 2 units down
Step-by-step explanation:
Let's take a look at A', which is (0, 0). This is the result of A, which is (5, 2) being transformed somehow. Notice that the x-coordinate moved 5 units to the left (from 5 to 0, which means we subtract 5 from 5). And, notice that the y-coordinate moved 2 units down (from 2 to 0, so we subtract 2 from 2).
Look to see if this works for the other two points:
B(6, 1): if we subtract 5 from the x-coordinate 6, we get 6 - 5 = 1, which matches the x-coordinate of the image B'. If we subtract 2 from the y-coordinate of B, which is 1, we get 1 - 2 = -1, which also matches the y-coordinate of B'. So, this works.
C(4, 5): if we subtract 5 from the x-coordinate 4, we get 4 - 5 = -1, which matches the x-coordinate of the image C'. If we subtract 2 from the y-coordinate of C, which is 5, we get 5 - 2 = 3, which also matches the y-coordinate of C'. So, this again works.
Therefore, we know that the transformation is a translation 5 units left and 2 units down, or C.
A picture will be shown below of a graph with the points in the table.
We only need to use (5, 2) and (0, 0) to solve this problem.
We take both points and see what it took for the old point to get to where the new point is (Shown in picture below).
Therefore, the answer is [ C. Translation 5 units left and 2 units down ]
Best of Luck!
the f-distribution's curve is positively skewed. group startstrue or falsetrue, unselectedfalse, unselected
The f-distribution's curve is positively skewed. Hence, the statement is true.
We have to check whether the statement is true and false.
The given statement is "The f-distribution's curve is positively skewed."
We can compare two populations using a F statistic thanks to the F distribution. The F distribution can be used to detect whether there is a significant difference in the variance between the means of two populations for ANOVA testing. Regression analysis can also make use of the F distribution to assess how well various models fit together.
The F distribution's graph is always positive and slanted to the right, while the form might vary based on the numerator and denominator degrees of freedom.
The f-distribution's curve is positively skewed. Hence, the statement is true.
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There are 10 marbles in a bag. are red and the others are blue. 5 What is the ratio of red marbles to blue marbles? Question 11 * 1 There are 10 marbles in a bag . are red and the others are blue . 5 What is the ratio of red marbles to blue marbles ?
Answer:
%50 1÷2
if there is missing information. if there is 10 total marbels 5 would be red, 5would be blue.
Which of these equations has no solution 6(x - 2) = 6x - 3
2(x - 3) = 2x - 6
3(x - 2) = x - 6
go with your heart if you think that your heart is telling you something just go with it trust your instinct
find all eigenvalues for the transformation that rotates points by 90 degrees about some axis through the origin.
The , th only eigenvalue for the transformation that rotates points by 90 degrees about some axis through the origin is 1.
Let's assume that the transformation rotates points by 90 degrees about some axis through the origin. We can represent this transformation by a matrix A, and the eigenvectors of A will be the axis of rotation. Since the rotation is by 90 degrees, the eigenvectors will be orthogonal to the axis of rotation.
To find the eigenvalues of A, we can use the characteristic equation:
det(A - λI) = 0
where λ is the eigenvalue and I is the identity matrix. Since A is a rotation matrix, its determinant is equal to 1, and we can write:
det(A - λI) = det(A) - λ det(I) = 1 - λ
To find the eigenvalues, we need to solve the equation:
1 - λ = 0
which gives us λ = 1. Therefore, the only eigenvalue for the transformation that rotates points by 90 degrees about some axis through the origin is 1.
Note that the eigenvectors associated with this eigenvalue will be any two orthogonal vectors in the plane perpendicular to the axis of rotation.
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Questions (7 Domains):
FYI: PLEASE DO NOT EXPLAIN THE 7 DOMAINS. PLEASE DO NOT
EXPLAIN THE 7 DOMAINS.
1. In your opinion, which domain is the most difficult
to monitor for malicious activity? Why?
2.
1. In my opinion, the domain that is most difficult to monitor for malicious activity is the User Domain. The User Domain represents all the individuals who access an organization's network and resources.
This domain is the most vulnerable to security breaches because users are prone to making mistakes that can expose the network to attacks.
Users can fall for phishing scams, install malicious software, or use weak passwords that can be easily guessed by hackers. It is challenging to monitor user activity because it requires a balance between security and user privacy. Organizations must ensure that users are following security policies without infringing on their privacy rights.
Another reason the User Domain is challenging to monitor is the wide range of devices that users may use to access the network, such as smartphones, tablets, laptops, and personal computers. Securing all these devices can be a challenge, and ensuring that all devices are updated with the latest security patches can be difficult.
2. It appears that you have not given a second question. If you have any other question regarding this topic, kindly post the complete question, and I will be glad to assist you.
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Calculate the five-number summary for the following dataset.41.19, 83.51, 19.98, 114.60, 63.08, 83.88
The five-number summary for the given dataset is: 19.98, 30.585, 73.295, 99.24, and 114.60.
To calculate the five-number summary for the given dataset, we first need to sort the data in ascending order:
19.98, 41.19, 63.08, 83.51, 83.88, 114.60
Now, let's find the five-number summary components:
1. Minimum: The smallest number in the dataset.
Minimum = 19.98
2. First Quartile (Q1): The median of the lower half, not including the overall median if the dataset has an odd number of data points.
Q1 = (19.98 + 41.19) / 2 = 30.585
3. Median: The middle number of the dataset.
Median = (63.08 + 83.51) / 2 = 73.295
4. Third Quartile (Q3): The median of the upper half, not including the overall median if the dataset has an odd number of data points.
Q3 = (83.88 + 114.60) / 2 = 99.24
5. Maximum: The largest number in the dataset.
Maximum = 114.60
The five-number summary for the given dataset is: 19.98, 30.585, 73.295, 99.24, and 114.60.
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Describe the transformations necessary to transform the blue graph of f(x) into the red graph of g(x)
Transformation is a process that involves either increasing, or decreasing the size of a given object, or changing its orientation to produce an image.
The required transformations are:
i. For graph a - translation.
ii. For graph b - dilation.
Rigid transformation involves a change in the orientation of a given object or resizing of a given object to produce an image. The types of transformation are reflection, translation, rotation, and dilation.
i. Reflection is a type of transformation that requires flipping a given object about a reference point or line.
ii. Translation is a type of transformation that involves moving an object in a particular direction without a change in its size and orientation.
iii. Rotation is a type of transformation that involves turning an object at a given angle about a reference point.
iv. Dilation is a type of transformation that require increasing or decreasing the size of the object using a given factor.
Therefore the necessary transformation to transform the blue graph of f(x) into the red graph of g(x) is:
a. For graph a is translation.
b. For graph b is dilaton.
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How large should we choose n so that the trapezoid-rule approximation, Tn, to the integral sin r dz is accurate to within 0.00001? (Use the error bound given in Section 5.9 of the course text.)
The trapezoidal rule is a numerical integration method that uses trapezoids to estimate the area under a curve. The trapezoidal rule can be used for both definite and indefinite integrals. The trapezoidal rule approximation, Tn, to the integral sin r dz is given by:
Tn = (b-a)/2n[f(a) + 2f(a+h) + 2f(a+2h) + ... + 2f(b-h) + f(b)]where h = (b-a)/n. To determine how large n should be so that Tn is accurate to within 0.00001, we can use the error bound given in Section 5.9 of the course text. According to the error bound, the error, E, in the trapezoidal rule approximation is given by:E ≤ ((b-a)³/12n²)max|f''(x)|where f''(x) is the second derivative of f(x). For the integral sin r dz, the second derivative is f''(r) = -sin r. Since the absolute value of sin r is less than or equal to 1, we have:max|f''(r)| = 1.
Substituting this value into the error bound equation gives:E ≤ ((b-a)³/12n²)So we want to choose n so that E ≤ 0.00001. Substituting E and the given values into the inequality gives:((b-a)³/12n²) ≤ 0.00001Simplifying this expression gives:n² ≥ ((b-a)³/(0.00001)(12))n² ≥ (b-a)³/0.00012n ≥ √(b-a)³/0.00012Now we just need to substitute the values of a and b into this expression. Since we don't know the upper limit of integration, we can use the fact that sin r is bounded by -1 and 1 to get an upper bound for the integral.
For example, we could use the interval [0, pi/2], which contains one full period of sin r. Then we have:a = 0b = pi/2Plugging in these values gives:n ≥ √(pi/2)³/0.00012n ≥ 5073.31Since n must be an integer, we round up to the nearest integer to get:n = 5074Therefore, we should choose n to be 5074 so that the trapezoidal rule approximation, Tn, to the integral sin r dz is accurate to within 0.00001.
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Consider two mugs. The first contains two white and seven black balls, and the second contains five white and six black balls. We flip a fair coin and then draw a ball from the first mug or the second mug depending on whether the outcome was heads or tails, respectively. What is the conditional probability that the outcome of the toss was heads given that a white ball was selected
The conditional probability that the outcome of the coin toss was heads can be calculated using Bayes' theorem. The conditional probability that the outcome of the toss was heads given that a white ball was selected is 26/63.
Let's denote H as the event that the outcome of the coin toss was heads, and W as the event that a white ball was selected. We want to find P(H|W), the probability of the coin toss being heads given that a white ball was selected.
According to Bayes' theorem, we have:
P(H|W) = P(W|H) * P(H) / P(W)
P(W|H) is the probability of selecting a white ball given that the outcome of the coin toss was headed. Since the first mug is chosen in this case, which contains two white balls out of a total of nine balls, P(W|H) = 2/9.
P(H) is the probability of the coin toss being heads, which is 1/2 since the coin is fair.
P(W) is the probability of selecting a white ball, regardless of the outcome of the coin toss. There are a total of seven white balls out of thirteen balls (two from the first mug and five from the second mug), so P(W) = 7/13.
Therefore, substituting these values into Bayes' theorem:
P(H|W) = (2/9) * (1/2) / (7/13)
Simplifying this expression:
P(H|W) = 26/63
Therefore, the conditional probability that the outcome of the toss was heads given that a white ball was selected is 26/63.
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What is the approximate radius of a sphere with a surface area of 65π inches
\(\textit{volume of a sphere}\\\\ V=\cfrac{4\pi r^3}{3}~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ V=65\pi \end{cases}\implies 65\pi =\cfrac{4\pi r^3}{3}\implies \cfrac{3}{4\pi}\cdot 65\pi =r^3 \\\\\\ \cfrac{195}{4}=r^3\implies \sqrt[3]{\cfrac{195}{4}}=r\implies 3.65\approx r\)
Please can I have an explanation also, I am terrible at these kinds of questions!
Q- A bag contain red, yellow and blue beads.
The ratio of red beads to yellow beads is 2:3
The ratio of yellow beads to blue beads is 5:4
Work out what fraction of the beads are red.
Answer:
The fraction of the beads that are red is
Step-by-step explanation:
Algebraic Expressions
A bag contains red (r), yellow (y), and blue (b) beads. We are given the following ratios:
r:y = 2:3
y:b = 5:4
We are required to find r:s, where s is the total of beads in the bag, or
s = r + y + b
Thus, we need to calculate:
\(\displaystyle \frac{r}{r+y+b} \qquad\qquad [1]\)
Knowing that:
\(\displaystyle \frac{r}{y}=\frac{2}{3} \qquad\qquad [2]\)
\(\displaystyle \frac{y}{b}=\frac{5}{4}\)
Multiplying the equations above:
\(\displaystyle \frac{r}{y}\frac{y}{b}=\frac{2}{3}\frac{5}{4}\)
Simplifying:
\(\displaystyle \frac{r}{b}=\frac{5}{6} \qquad\qquad [3]\)
Dividing [1] by r:
\(\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{1+y/r+b/r}\)
Substituting from [2] and [3]:
\(\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{1+3/2+6/5}\)
Operating:
\(\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{\frac{10+3*5+6*2}{10}}\)
\(\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{10}{10+15+12}\)
\(\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{10}{37}\)
The fraction of the beads that are red is \(\mathbf{\frac{10}{37}}\)
What is the positive solution to the equation 0 = –x2 + 2x + 1? Quadratic formula: x = StartFraction negative b plus or minus StartRoot b squared minus 4 a c EndRoot Over 2 a EndFraction
Answer:
x = 2 + √2
x = 2 - √2
Step-by-step explanation:
- x² + 2x + 1 = 0
x² - 2x - 1 = 0
Here,
a = 1
b = - 2
c = - 1
Now,
Discriminant
D = b² - 4ac
= (-2)² - 4(1)(-1)
= 4 + 4
= 8
=2√2 > 0
Real and Distinct roots
x = - b +- √b² - 4ac/2a
= - (-2) +- √ = (-2)² - 4(1)(-1)/2(1)
= 2 +- √4 + 4/2
= 2 +- √8/2
= 2 +- 2√2/2
= 2 +- √2
x = 2 + √2 or x = 2 - √2
Answer:
x = 2 + √2 or x = 2 - √2
Step-by-step explanation:
Edge 2021
David earns $11 an hour. He was scheduled to work 35 hours. However, he picked up an additional 7 hour shift. He is paid double time for anything over 40 hours. How much did he get paid?
David earned $484 in total.
Given that, David earns $11 an hour. He was scheduled to work 35 hours. However, he picked up an additional 7 hour shift. He is paid double time for anything over 40 hours.
We need to find how much did he get paid in total.
What is the unitary method?The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Now, total number of hours David worked=35+7=42
Upto 40 hour he get paid $11 per hour.
So, the total money = 40×11=$440
He gets paid $22 for each extra hour.
That is 2×22=$44
Total money earned=440+44=$484
Therefore, David earned $484 in total.
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Nora was offered a job that paid a salary of $40,000 in its first year. The salary was set to increase by 3% per year every year. If Nora worked at the job for 21 years, what was the total amount of money earned over the 21 years, to the nearest whole number?
The total amount of money earned by Nora salary over the 21 years is approximately $1,848,000.
To find the total amount of money earned by Nora over 21 years, we need to calculate the salary for each year and then sum them up.
In the first year, Nora's salary is $40,000.
In the second year, her salary will be increased by 3%, so it will be:
$40,000 + 3% of $40,000 = $40,000 + $1,200 = $41,200.
In the third year, her salary will again increase by 3%, so it will be:
$41,200 + 3% of $41,200 = $41,200 + $1,236 = $42,436.
We can continue this process for each year, adding 3% of the previous year's salary to calculate the next year's salary.
To calculate the total amount of money earned over the 21 years, we need to sum up the salaries for each year. Here's the calculation:
Total = $40,000 + $41,200 + $42,436 + ... (21 terms)
To simplify the calculation, we can use the formula for the sum of an arithmetic series:
Total = (n/2) * (2a + (n - 1)d)
where:
n = number of terms (21 in this case)
a = first term ($40,000)
d = common difference (3% of the previous year's salary)
Plugging in the values:
Total = (21/2) * [2(40,000) + (21 - 1)(0.03)(40,000)]
Simplifying further:
Total = (21/2) * [80,000 + 20(0.03)(40,000)]
= (21/2) * [80,000 + 2,400(40,000)]
= (21/2) * [80,000 + 96,000]
= (21/2) * 176,000
= 21 * 88,000
= 1,848,000
Therefore, the total amount of money earned by Nora salary over the 21 years is approximately $1,848,000.
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What is the solution to the system of equations?
y = *x+3
X = -2
• (-2. -
15
• (-2, 4)
• 6-2.1
Answer:
(-2,1)
Step-by-step explanation:
The two equations cross at (-2,1). Hope this helps.
How would you solve this?
Answer:
24k 21j37
Step-by-step explanation:
((0 - (22k3 • (j6)))2) • k15j25
k6 multiplied by k15 = k(6 + 15) = k21
j12 multiplied by j25 = j(12 + 25) = j37
….: 5 : 6 : 7= 24 :15 : …. :…. What is the missing number?
Step-by-step explanation:
3×5 = 15
so, the first number n×3 = 24, n = 8
an and then we have
8 : 5 : 6 : 7 = 24 : 15 : 18 : 21
7. Use the Composite Trapezoidal rule with the indicated values of \( n \) to approximate the following integrals. (1 mark) (a) \( \int_{1}^{2} x \ln x d x, \quad n=4 \) (b) \( \int_{2}^{2} x^{3} e^{x
The Composite Trapezoidal rule is used to approximate the given integrals. In part (a), the integral \(\( \int_{1}^{2} x \ln x \, dx \)\) is approximated using \(\( n = 4 \)\)subintervals. In part (b), the integral\(\( \int_{2}^{2} x^{3} e^{x} \, dx \)\) is given with incorrect limits, so it cannot be evaluated.
To approximate \(\( \int_{1}^{2} x \ln x \, dx \)\) using the Composite Trapezoidal rule, we divide the interval \(\([1, 2]\) into \( n = 4 \)\) subintervals. The step size, \(\( h \)\), is calculated as\(\( h = \frac{b-a}{n} = \frac{2-1}{4} = \frac{1}{4} \)\). Then, we evaluate the function \(\( x \ln x \)\)at the endpoints of each subinterval and sum the areas of the trapezoids formed. The approximation formula for the Composite Trapezoidal rule is: \(\[\int_{a}^{b} f(x) \, dx \approx \frac{h}{2} \left[ f(a) + 2\sum_{i=1}^{n-1} f(x_i) + f(b) \right]\]\)
Using this formula, we can calculate the approximation for the given integral. The limits of the integral \(\( \int_{2}^{2} x^{3} e^{x} \, dx \)\) are given as \(\( 2 \)\) to 2 which indicates an interval of zero length. In this case, the integral cannot be evaluated since there is no interval over which to integrate.
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The accompanying table gives amounts of arsenic in samples of brown rice from three different states. The amounts are in micrograms of arsenic and all samples have the same serving size. The data are from the Food and Drug Administration. Use a
0.05 significance level to test the claim that the three samples are from populations with the same mean. Do the amounts of arsenic appear to be different in the different states? Given that the amounts of arsenic in the samples from Texas have the highest mean, can we conclude that brown rice from Texas poses the greatest health problem?
What are the hypotheses for this test?
Determine the test statistic.
Determine the P-value.
Do the amounts of arsenic appear to be different in the different states?
There is not
sufficient evidence at a
0.05
significance level to warrant rejection of the claim that the three different states have
the same different
mean arsenic content(s) in brown rice.
Given that the amounts of arsenic in the samples from Texas have the highest mean, can we conclude that brown rice from Texas poses the greatest health problem?
A. The results from ANOVA allow us to conclude that Texas has the highest population mean, so we can conclude that brown rice from Texas poses the greatest health problem.
B. Because the amounts of arsenic in the samples from Texas have the highest mean, we can conclude that brown rice from Texas poses the greatest health problem.
C. Although the amounts of arsenic in the samples from Texas have the highest mean, there may be other states that have a higher mean, so we cannot conclude that brown rice from Texas poses the greatest health problem.
D. The results from ANOVA do not allow us to conclude that any one specific population mean is different from the others, so we cannot conclude that brown rice from Texas poses the greatest health problem.
The question provides data for three different states and asks us to test whether or not they have the same mean arsenic content. The hypotheses are: H0: μ1 = μ2 = μ3H1: At least one mean is different Using a 0.05 significance level, we perform an ANOVA test.
The test statistic is the F-statistic, which is calculated by dividing the variance between the groups by the variance within the groups. The P-value is the probability of getting a test statistic as extreme or more extreme than the one we calculated, assuming that the null hypothesis is true.
We can find the P-value using a table or calculator. After performing the test, if we reject the null hypothesis, we can conclude that there is evidence that at least one of the means is different. If we fail to reject the null hypothesis, we cannot conclude that any of the means are different.
The amounts of arsenic appear to be different in the different states because the P-value is less than 0.05. However, we cannot conclude that brown rice from Texas poses the greatest health problem because the results from ANOVA do not allow us to conclude that any one specificmean is different from the others.
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Twenty people each choose a number from a choice of, 1,2,3,4 or 5. the mode is larger than the median. the median is larger than the mean
fill in a set of possible frequency
To satisfy the conditions that the mode is larger than the median, and the median is larger than the mean, one possible set of frequencies is 1 person chooses 1, 3 people choose 2, 4 people choose 3, 1 person chooses 4 and 11 people choose 5 This results in a mode of 5, a median of 4, and a mean of approximately 3.75.
Since we are given that the mode is larger than the median, that means that at least 11 people must choose the same number. Let's assume that 11 people choose the number 5.
Now, since the median is larger than the mean, we want to make sure that the remaining 9 people choose numbers that are smaller than 5. If they all choose 1, 2, or 3, then the median will be 3, which is larger than the mean. Therefore, we need to make sure that at least one person chooses 4.
So one possible set of frequencies could be
1 person chooses 1
3 people choose 2
4 people choose 3
1 person chooses 4
11 people choose 5
This set of frequencies gives us a mode of 5 (since 11 people choose 5), a median of 4 (since the middle value is 4), and a mean of
(11 + 32 + 43 + 14 + 11*5) / 20 = 3.7
Since the median is larger than the mean, this set of frequencies satisfies all the given conditions.
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Candidates running for office are handing out items to voters. Every 6th voter gets a button. Every 7th voter gets a sticker.
Which voter is the first to receive both items?
the 42nd voter
the 28th voter
the 21st voter
the 13th voter
PLEAS HELP
Answer: 42
Step-by-step explanation:
6 12 18 24 30 36 42
7 14 21 28 35 42
Answer:
The 42nd Voter
is the correct awnser!
what is the probability of picking the most expensive car from a range of 6 new cars
The solution is: 16.67% is the probability of picking the most expensive car from a range of 6 new cars.
What is probability?Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event.
Here, we have,
given that,
the most expensive car from a range of 6 new cars.
so, total sample space = 6
the number of favorable outcome = 1
so, probability = 1/6
Now, the word “expensive” was used to confuse you but simply put, the probability of getting “the most expensive car” is 1/6.
It is 1/6 because there is nothing that heightens its chances of being picked over the other cars,
hence the probability of any car will be equal to that of the “most expensive car”.
And for a percentage:
(1/6) x (100) = 16.67%
Hence, The solution is: 16.67% is the probability of picking the most expensive car from a range of 6 new cars.
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the polymorphism of derived classes is accomplished by the implementation of virtual member functions. (true or false)
The statement is true. Polymorphism of derived classes in object-oriented programming is achieved through the implementation of virtual member functions.
In object-oriented programming, polymorphism allows objects of different classes to be treated as objects of a common base class. This enables the use of a single interface to interact with different objects, providing flexibility and code reusability.
Virtual member functions play a crucial role in achieving polymorphism. When a base class declares a member function as virtual, it allows derived classes to override that function with their own implementation. This means that a derived class can provide a specialized implementation of the virtual function that is specific to its own requirements.
When a function is called on an object through a pointer or reference to the base class, the actual function executed is determined at runtime based on the type of the object. This is known as dynamic or late binding, and it enables polymorphic behavior. The virtual keyword ensures that the correct derived class implementation of the function is called, based on the type of the object being referred to.
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Can anyone help me with this math equation?
Answer: Answer would be A.
Step-by-step explanation: 1/4 multiplied by 1/3 equals 1/12. A is the only option showing this correctly.
perform the multiplication and use the fundamental identities to simplify. there is more than one correct form of the answer. (7 − 7 sin(x))(7 7 sin(x))
The simplified form of (7 - 7 sin(x))(7 + 7 sin(x)) is either 49 - 49 sin^2(x) or 49 cos^2(x). Both forms are equivalent, depending on whether you prefer to express it in terms of sin(x) or cos(x).
To perform the multiplication and simplify the expression (7 - 7 sin(x))(7 + 7 sin(x)), we can apply the formula for the difference of squares, which states that (a - b)(a + b) = a^2 - b^2.
Using this identity, we have:
(7 - 7 sin(x))(7 + 7 sin(x)) = (7)^2 - (7 sin(x))^2
Simplifying further, we obtain:
49 - 49 sin^2(x)
Another way to express this result is by applying the Pythagorean identity sin^2(x) + cos^2(x) = 1. We can rewrite sin^2(x) as 1 - cos^2(x):
49 - 49 sin^2(x) = 49 - 49(1 - cos^2(x))
Simplifying again, we get:
49 - 49 + 49 cos^2(x) = 49 cos^2(x)
Therefore, the simplified form of (7 - 7 sin(x))(7 + 7 sin(x)) is either 49 - 49 sin^2(x) or 49 cos^2(x). Both forms are equivalent, depending on whether you prefer to express it in terms of sin(x) or cos(x).
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What is the value of x?
x
21.5
13.1
Round your final answer to the nearest tenth.
Use the Pythagorean theorem
Answer
x=37.8
Step-by-step explanation:
According to Pythagoras theorem
AB = 21.5
BC = 13.1
AC = ?
AC²= AB²+BC²
x² =(21.5)²+(13.1)²
x² =462.25+967.21
x² =1429.46
x =√1429.46
x =37.8
Richard Jackson developed an ergonomically superior computer mouse in 1989, and sales have been increasing ever since. Data are presented below in terms of thousands of mice sold per year.
Year 1989 1990 1991 1992 1993 1994 1995 1996
Number sold 82.4 125.7 276.9 342.5 543.6 691.5 782.4 889.5
a) Develop a linear estimating equation that best describes these data.
b) Develop a second-degree estimating equation that best describes these data.
c) Estimate the number of mice that will be sold in 1998, using both equations.
d) If we assume the rate of increase in mouse sales will decrease soon based on supply and demand, which model would be a better predictor for your answer in part (c)?
We need to find the equation of a straight line that best fits the data points. Using a graphing calculator or a regression analysis, we can find that the linear equation is:
Number sold = 54.876(year) - 90990.3
b) To develop a second-degree estimating equation, we need to find the equation of a curve that best fits the data points. Using a graphing calculator or a regression analysis, we can find that the second-degree equation is:
Number sold = -3.855(year)^2 + 148.69(year) - 133126.2
c) To estimate the number of mice that will be sold in 1998, we need to substitute the year 1998 into both equations:
Linear estimating equation: Number sold = 54.876(1998) - 90990.3 = 909.2 thousand mice
Second-degree estimating equation: Number sold = -3.855(1998)^2 + 148.69(1998) - 133126.2 = 824.4 thousand mice
d) If we assume the rate of increase in mouse sales will decrease soon based on supply and demand, the linear estimating equation would be a better predictor as it assumes a constant rate of increase. The second-degree equation assumes a non-constant rate of increase, which may not hold true in the future.
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The sum of three consecutive integers is -51. Find the value of the greatest of the three.
Answer:
The value of the greatest of the three is -16
How to find the value of the greatest of the three?Let the smallest of the integers be x - 2
So, the other integers are x - 1 and x
The sum of the integers is given as
Sum = -51
So, we have the following equation
x - 2 + x - 1 + x = -51
Evaluate the like terms in the above equation
So, we have the following equation
3x = -48
Divide both sides of the equation by 3
So, we have the following equation
x = -16
Hence, the value of the greatest of the three is -16
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