Answer: The height of the water was 2 inches before any water was added.
Kyle gave 2/7 of his money to his wife and spent 4/5 of the remainder. If he had $300 left, how much money did he have at first?
Answer:
$5,250
Step-by-step explanation:
2/7x - [4/5(2/7x)] = 300
2/7x - 8/35x = 300
10/35x = 8/35x = 300
2/35x = 300
2x = 10500
x = 5250
Please use the following to answer the next 4 questions. A soft drink filling machine, when in perfect adjustment, fills the bottles with 12 ounces of soft drink. A random sample of 49 bottles is selected, and the contents are measured. The sample yielded a mean content of 11.88 ounces with a standard deviation of 0.35 ounces.
1.State the null and alternative hypotheses.
a. H0: µ = 0, Ha: µ > 11.88
b. H0: µ = 0, Ha: µ ≠ 11.88
c. H0: µ = 0, Ha: µ > 12
d. H0: µ = 0, Ha: µ ≠ 12
2.Specify the rejection region for = 0.01. Reject H0 if
a. t > 2.68
b. t < -2.68
c. |t| > 2.68
d. z < 2.68
3.Calculate the p-value
a. 0.01
b. 0.02
c. 0.005
d. 0.05
4. What is your conclusion?
a. Reject H0
b. Fail to reject H0
c. Reject Ha
d. Fail to reject Ha
The null and alternative hypotheses can be stated as follows:
c. H0: µ = 12, Ha: µ ≠ 12
The null hypothesis (H0) assumes that the population mean content of the bottles is 12 ounces, indicating perfect adjustment of the filling machine. The alternative hypothesis (Ha) states that the population mean content is not equal to 12 ounces, suggesting that the machine is not in perfect adjustment.
The rejection region for α = 0.01 can be specified as:
c. |t| > 2.68
This means that we would reject the null hypothesis if the absolute value of the calculated t-statistic is greater than 2.68.
To calculate the p-value, we need the t-statistic corresponding to the sample mean and standard deviation. With a sample mean of 11.88 ounces, a standard deviation of 0.35 ounces, and a sample size of 49, we can calculate the t-statistic. The p-value represents the probability of observing a sample mean as extreme as the one obtained, assuming the null hypothesis is true.
The p-value cannot be determined without the t-statistic value or the corresponding degrees of freedom.
Without the p-value, we cannot draw a definitive conclusion. To make a conclusion, we would compare the calculated t-statistic to the critical t-value based on the chosen significance level (α = 0.01). If the calculated t-statistic falls within the rejection region (|t| > 2.68), we would reject the null hypothesis. If the calculated t-statistic falls outside the rejection region, we would fail to reject the null hypothesis.
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Tell whether each ordered pair is a solution of the equation: 2x - y = 4, ( 3, -2 )
The ordered pair (3, - 2) is not a solution to the equation 2x - y = 4
What is an ordered pair?An ordered pair is made up of the ordinate and the abscissa of the x coordinate, with two values given in parenthesis in a certain sequence.
Pair in Order = (x,y)
x is the abscissa, the distance measure of a point from the primary axis x
y is the ordinate, the distance measure of a point from the secondary axis y
Given, an equation 2x - y = 4 now if (3, - 2) is an ordered pair then putting the numerical value of x must satisfy the y value.
when x = 3,
2(3) - y = 4.
6 - y = 4.
- y = 4 - 6.
- y = - 2.
y = 2.
So, (3, - 2) is not a solution to an equation 2x - y = 4.
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6.2
3
6
Find the area of the parallelogram.
Answer:
18 square units
Step-by-step explanation:
the area of a parallelogram is represented by length times width
or l * w
l is 3 and w is 6
when you multiply them you get 18
you have to add the square in front of your type of unit too
PLEASE PLEASD HELP!!!
A machine produces 480 gel pens per hour. Which equation represents the number of gel pens, p, produced in
m minutes?
The equation represents the number of gel pens, 'p' produced in 'm' minutes will be P = 8m.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that a machine produces 480 gel pens per hour. The equation for the number of pens in hours can be written as,
P = 480 / 60 m
Here, P is the number of pens and 'm' is
P = 8m
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An office manager orders one calculator or one calendar for each of the office's 60 employees. Each calculator costs $15, and each calendar costs $10. The entire order totaled $800.
Part A: Write the system of equations that models this scenario. (5 points)
Part B: Use substitution method or elimination method to determine the number of calculators and calendars ordered. Show all necessary steps. (5 points)
The system of equations is.
\(\begin{cases}\text{x}+\text{y}=60 \\15\text{x}+10\text{y}=800 \end{cases}\)
And the solutions are y = 50 and x = 10.
How to write and solve the system of equations?Let's define the two variables:
x = number of calculators.y = number of calendars.With the given information we can write two equations, then the system will be:
\(\begin{cases}\text{x}+\text{y}=60 \\15\text{x}+10\text{y}=800 \end{cases}\)
Now let's solve it.
We can isolate x on the first to get:
\(\text{x} = 60 - \text{y}\)
Replace that in the other equation to get:
\(15\times(60 - \text{y}) + 10\text{y} = 800\)
\(-2\bold{y} = 900 - 800\)
\(-2\bold{y} = 100\)
\(\text{y} = \dfrac{100}{-2} = \bold{50}\)
Then \(\bold{x=10}\).
Therefore, the solutions are y = 50 and x = 10.
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If x varies inversely as y and x = 24 when y = 4, find x when y = 12.
what that makes no sense
Can you work out this math puzzle?
The value of the puzzle is 17
The value of the triangle :
30/3 = 10Value of Circle :
10/2 = 5Value of whole yellow square :
8/2 = 4Value of half-yellow square :
4/2 = 2Using the above information:
Triangle + Circle + half-square
10 + 5 + 2 = 17
Therefore, the solution to the puzzle is 17
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cellusIn a school, 10% of the students have green eyes. Findthe experimental probability that in a group of 4students, at least one of them has green eyes.The problem has been simulated by generating randomnumbers. The digits 0-9 were used. Let the number "9"represent the 10% of students with green eyes. A sampleof 20 random numbers is shown.79187910254613906075123023860793735930482816614759789732562161739436380659711430Experimental Probability = [?]%Enter
First of all, we need to define Experimental probability and Theoretical probability.
• Theoretical probability, is what we expect to happen, but sometiimes it isn't what actually happens.
,• On the other hand, ,experimental probability, is what it actually happens when we conduct several tries.
In our sample, let's see how many "9" we have in each random number:
• Number 1: We have 1 nine (7918)
,• Number 2: We have 1 nine (7910)
,• Number 3: We don't have any 9 (2546)
,• Number 4: We have 1 nine (1390)
,• Number 5: We don't have any nine (6075)
,• Number 6: We don't have any nine (1230)
,• Number 7: We don't have any nine (2386)
,• Number 8: We have 1 nine (0793)
,• Number 9: We have 1 nine (7359)
,• Number 10: We don't have any nine (3048)
,• Number 11: We don't have any nine (2816)
,• Number 12: We don't have any nine (6147)
,• Number 13: We have 1 nine (5978)
,• Number 14: We don't have any nine (5621)
,• Number 15: We have 1 nine (9732)
,• Number 16: We have 1 nine (9436)
,• Number 17: We don't have any nine (3806)
,• Number 18: We have 1 nine (5971)
,• Number 19; We don't have any nine (6173)
,• Number 20: We don't have any nine (1430)
Now, we can count how many numbers have a nine:
Total is nine (numbers 1, 2, 4, 8, 9 13, 15, 16, 18)
Therefore, the experimental probability is:
Total number of 9 in the sample/Total of random numbers in the sample
9/20 = 0.45
Interpretation: The experimental probability of the sample is 45%
Factorize the following: cos²B + 5cosB - 6
Answer:
(cosB-1)(cosB+6)
Step-by-step explanation:
use u substitution . u = cosB
u^2+5u-6
factor
(u-1)(u+6)
put cosB back in for u
(cosB-1)(cosB+6)
Give an example of each of the following, or argue that such a request is impossible.
(a) A sequence that does not contain 0 or 1 as a term but contains subsequences converging to each of these values.
(b) A monotone sequence that diverges but has a convergent subsequence.
(c) A sequence that contains subsequences converging to every point in the infinite set {1, 1/2, 1/3, 1/4, 1/5, ...}.
(d) An unbounded sequence with a convergent subsequence.
(e) A sequence that has a subsequence that is bounded but contains no subsequences that converge.
(a) Consider the sequence {1/n}, where n is a positive integer greater than 1. This sequence does not contain 0 or 1 as a term, but it contains the subsequence {1}, which converges to 1, and the subsequence {1/n}, which converges to 0.
How to consider sequences?(b) Consider the sequence {(-1)^n × n}, which alternates between positive and negative values but is unbounded. However, the subsequence {n} is increasing and unbounded, but it converges to infinity.
(c) Consider the sequence {a_n}, where a_n = 1/n for n = 1, 2, 3, ..., and let x be any positive real number. Since 1/n converges to 0 as n approaches infinity, we can choose a term in the sequence such that 1/n < x. Let N be the smallest integer such that 1/N < x. Then the subsequence {a_N} converges to x. Since x was arbitrary, this sequence contains subsequences converging to every point in the infinite set {1, 1/2, 1/3, 1/4, 1/5, ...}.
(d) Consider the sequence {(-1)ⁿ}, which alternates between 1 and -1 but is unbounded. However, the subsequence {1, -1, 1, -1, ...} is bounded and converges to 1.
(e) Consider the sequence {n/(n+1)}, which is bounded between 0 and 1 but does not converge. However, any subsequence of this sequence is either eventually increasing or eventually decreasing and must converge to either 0 or 1. Therefore, there are no subsequences that converge.
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Please help! Will give brainiest if correct
Answer:
Step-by-step explanation:
First Choice
Find the slope of a line perpendicular to the line whose equation is x + 6y = -24.
Fully simplify your answer.
Answer:
\(m_{perpendicular}\) = 6
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
given
x + 6y = - 24 ( subtract x from both sides )
6y = - x - 24 ( divide through by 6 )
y = - \(\frac{1}{6}\) x - 4 ← in slope- intercept form
with slope m = - \(\frac{1}{6}\)
given a line with slope m then the slope of a line perpendicular to it is
\(m_{perpendicular}\) = - \(\frac{1}{m}\) = - \(\frac{1}{-\frac{1}{6} }\) = 6
Estimate the:
length of a pen
length of a swimming pool
length of a marathon race
5.2 inches 13.12 cm
length of a swimming pool:50m
length of a marathon race:42.195 kilometers
hope this answers your question!Explain how to find 20% of 160
Answer: 20% of 160 is 32.
Step-by-step explanation:
The percentage is from the word percent which means one part in a hundred. It is a part of the base or the whole determined by the rate. Usually, the percentage is smaller than the base. However, there are also cases where the percentage is greater than the base. This happens when the percent is greater than 100%.
To find the percentage, you have to multiply the base and the rate. The base is the 100% or original amount or the whole while the rate is the ratio of the percentage to the base and it has the percent sign (%). Remember that you have to convert the rate to a decimal number by moving the decimal point twice to the left.
Let us now find the 20% of 160.
20% = 0.2
percentage = 160 × 0.2
= 32
Which of the following two-dimensional shapes can be rotated to create a sphere?
Triangle
Square
Circle
Ellipse
Answer: C. Circle
Step-by-step explanation: i got it right good luck
When the circle is rotated then it forms the sphere. Then the correct option is C.
What is Geometry?It deals with the size of geometry, region, and density of the different forms both 2D and 3D.
Whenever the 2D shape is rotated we get 3D solid.
A. Triangle - when the triangle is rotated then it forms the cone.
B. Square - when the square is rotated then it forms the cylinder.
C. Circle - when the circle is rotated then it forms the sphere.
D. Ellipse - when the ellipse is rotated then it forms the flat sphere.
Thus, the correct option is C.
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The graph of f(x) = x2 is shifted 3 units to the right to obtain the graph of g(x). Which of the following equations best describes g(x)?
Answer:
Hey there!
The correct answer would be f(x)=(x-3)^2
Let me know if this helps :)
The student population of JBMS increased from 1,250 students in 2010 to 1,400 students in 2020. What is the percent increase in the number of students?
a. 12.5%
b. 15%
c. 150%
d. 12%
The ratio of the number of boys to the number of
girls in choir is 6 to 5. There are 70 girls in the choir.
How many boys are in the choir?
Answer:
48 boys
Step-by-step explanation:
HELPPPP
I CANT GET THIS WRONG
Answer:
(-5, 4) The x value is -5, and the y value is 4.
Scores on the Wechsler Adult Intelligence Scale (a standard IQ test) for the 20-to-34 age group are approximately normally distributed with μ = 110 and σ = 25. What percent of people aged 20 to 34 have IQs between 125 and 150?
The percentage of people aged 20 to 34 that have IQs between 125 and 150 of people aged 20 to 34 have IQs between 125 and 150 is 21.94%
What is percentage?Percentage simply means a proportion of the number as a fraction of 100
What percent of people aged 20 to 34 have IQs between 125 and 150?
Let X = Scores on the standard IQ test for the 20 to 34 age group
This implies that X ~ Normal(x=110, б² = 25)
The z-score probability distribution for the normal distribution is given by; Z = (x-ц)/б ~ N(0,1)
Recall that population mean = 110 and standard deviation = 25
Now, the percent of people aged 20 to 34 have IQs between 125 and 150 is given by = P(125 < X < 150) = P(X < 150) - P(X 125)
P(X < 150) = P( < ) = P(Z < 1.60) = 0.9452
P(X 125) = P( ) = P(Z 0.60) = 0.7258
The above probability is calculated by looking at the value of x = 1.60 and x = 0.60 which has an area of 0.9452 and 0.7258.
Therefore, P(125 < X < 150) = 0.9452 - 0.7258 = 0.2194 or 21.94%
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The definition of the absolute value of a number is its magnitude, or distance, from zero. How do these two definitions connect?
The way that the definitions of the absolute value of a number, connect is that the absolute value of a number is the positive representation of the number's distance from zero.
What is absolute value ?The absolute value of a number is the numerical value of a real number without regard to its sign. In other words, the absolute value of a number is the number's distance from zero on the number line. The absolute value of a number is always positive or zero, and is written as the number inside of absolute value notation, which is two vertical lines on either side of the number, like so: |number|. For example, the absolute value of -5 is 5, and the absolute value of 5 is also 5.
The distance from zero is the same as the magnitude of a number, and the absolute value of a number is a non-negative representation of its magnitude. So, in other words, the absolute value of a number is its distance from zero on the number line. The two definitions are connected because the absolute value of a number is a positive representation of its distance from zero.
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99 Points! Geometry question. Photo attached. Please show as much work as possible. Thank you!
Two stockpots are similar cylinders. The smaller stockpot has a height of 10 inches and a radius of 2.5 inches, the volume of larger one is 628.32 cubic inches.
We know that, to find volume:
Volume = π * \(r^2\) * h
For the smaller stockpot:
Radius (r) = 2.5 inches
Height (h) = 10 inches
Volume = π * (2.5)² * 10 ≈ 196.35 cubic inches
For the larger stockpot:
Radius (r) = 2.5 inches
Height (h) = 16 inches
Volume = π * (2.5)² * 16
≈ 628.32 cubic inches
Thus, the volume of larger one is 628.32 cubic inches.
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Solve 3(5x + 7) = 9x + 39.
O A. X=-3
B. X= -10
O c. x = 10
O D. x= 3
Answer:
x=3
Step-by-step explanation:
3(5x + 7) = 9x + 39
15x + 21 = 9x + 39
15x - 9x = 39 - 21
6x = 18
x = 3
the circumference of circle x in which a = 49pi in squared
Answer:
C = 14 pi inches
Step-by-step explanation:
The area of a circle is given by
A = pi r^2
49 pi = pi r^2
Divide each side by pi
49 pi/pi = pi /pi r^2
49 = r^2
Take the square root of each side
7 = r
The circumference is given by
C = 2 * pi *r
C = 2 * pi *7
C = 14 pi inches
inced Quantitative Reasoning A VA
English
Rache
The box plots represent the birth weights, in pounds, of
babies born full term at a hospital during one week.
Female Birth Weight
Complete the statements to compare the weights of
female babies with the weights of male babies.
The median female birth weight is
the
median male birth weight.
The range of female birth weight is
range of male birth weight.
Which birth weight measure is the same for both
genders?
the
8
7
8
9
10
11
Male Birth Weight
Intro
Done
Answer:
The median female birth weight is
less than
the median male birth weight.
The range of female birth weight is
less than
the range of male birth weight.
Which birth weight measure is the same for both genders?
minimum
please answer asap find equation
9514 1404 393
Answer:
y = 4/3x -(4 2/3)
Step-by-step explanation:
The vertical difference between the two marked points is ...
2 -(-6) = 8
The horizontal difference between them is ...
5 -(-1) = 6
The slope is the ratio of these values:
m = ∆y/∆x = 8/6 = 4/3
The point-slope form of the equation of the line can be written using this slope and the upper point:
y -y1 = m(x -x1)
y - 2 = 4/3(x -5) . . . . substitute known values.
This is an equation for the line.
__
This can be rearranged to slope-intercept form:
y = 4/3x -20/3 +2
y = 4/3x -14/3
y = 4/3x -(4 2/3)
What is 12 to the power of negative 9 times 12 to the power of 3
Answer: 3.34897977 -7
Step-by-step explanation:
what is between fractions 6/6 and 6/7
The fraction 13/7 lies between the fractions 6/6 and 6/7.
We have,
Between the fractions 6/6 and 6/7, there are infinitely many fractions.
To find a fraction that lies between these two fractions, we can take their average.
The fraction 6/6 simplifies to 1, and the fraction 6/7 cannot be simplified further.
To find the average, we add the two fractions and divide the sum by 2:
(6/6 + 6/7) / 2
To add the fractions, we need a common denominator, which is the least common multiple (LCM) of 6 and 7, which is 42.
Converting the fractions to have a common denominator:
(6/6) x (7/7) + (6/7) x (6/6) / 2
Simplifying the expression:
(42/42 + 36/42) / 2
Combining the numerators:
(78/42) / 2
Dividing:
78/42 = 13/7
Thus,
The fraction 13/7 lies between the fractions 6/6 and 6/7.
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Annabelle is going to see a movie and is taking her 4 kids. Each movie ticket costs $and there are an assortment of snacks available to purchase for $3 each. How much total money would Annabelle have to pay for her family if she were to buy 6 snacks for everybody to share? How much would Annabelle have to pay if she bought x snacks for everybody to share?
Cost for 6 snacks:
Cost for x snacks:
Answer:
(a) $83 for 6 snacks
(b) \(y = 65 + 3x\) --- for x snacks
Step-by-step explanation:
Given
Let:
\(n \to people\)
\(ticket =\$13\) --- per individual
\(snacks = \$3\) --- per individual
Solving (a): Amount for 6 snacks
The amount paid (y) is:
\(y = ticket * n + snacks * 6\) ---- because she bought 6 snacks
\(y = 13 * n + 3 * 6\)
\(y = 13n + 18\)
\(n = 5\) ---- Annabelle and the 4 kids.
So:
\(y =13*5+18\)
\(y =65+18\)
\(y =83\)
Solving (b): For x snacks
The amount paid (y) is:
\(y = ticket * n + snacks * x\) ---- because she bought x snacks
\(y = 13* 5 + 3* x\)
\(y = 65 + 3x\)