Answer:
Step 1: (-1,2) Step 2: 6 and 3 step 3: (1/7) step 4: (15,7)
Step-by-step explanation:
Vocabulary How can you tell when an equation in one variable has infinitely many solutions or no solution? When you solve for the variable, you will end up with a true statement, like 2 = 2, for an equation with no solution. You also will end up with a true statement for an equation with infinitely many solutions. When you solve for the variable, you will end up with a false statement, like 0 = 2, for an equation with no solution. You will also end up with a false statement for an equation with infinitely many solutions. When you solve for the variable, you will end up with a false statement, like 0 = 2, for an equation with no solution. You will end up with a true statement, like 2 = 2 for an equation with infinitely many solutions. When you solve for the variable, you will end up with a true statement, like 2 = 2, for an equation with no solution. You will end up with a false statement, like 0 = 2 for an equation with infinitely many solutions.
Answer: Choice C) When you solve for the variable, you will end up with a false statement, like 0 = 2, for an equation with no solution. You will end up with a true statement, like 2 = 2 for an equation with infinitely many solutions.
For example, let's say we had the equation x = x+2. Subtracting x from both sides leads to 0 = 2 which is a false statement. No matter what we replace x with, the equation x = x+2 is always false. That's why we don't have any solutions here.
For an equation like x + 2 = x + 2, subtracting x from both sides leads to 2 = 2 which is always true. A true equation is one where the same number is on both sides. No matter what we replace x with, the equation will be true. Therefore, there are infinitely many solutions.
To tell when an equation in one variable has infinitely many solutions or no solution;
When you solve for the variable, you will end up with a false statement, like 0 = 2, for an equation with no solution. You will end up with a true statement, like 2 = 2 for an equation with infinitely many solutions.The condition for an equation with no solution warrants that the equation upon evaluation yields a false statement as in the case of 1 = 2. In this case, such an equation has no solution.
The condition for an equation with infinitely many solutions warrants that the equation upon evaluation yields a true statement as in the case of y + 5 = y + 5. In this case, such an equation has infinitely many solution.
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Which theorem would show that the two right triangles are congruent?
A. SAS Triangle Congruence Theorem
B. HL Triangle Congruence Theorem
C. ASA Triangle Congruence Theorem
D. AAS Triangle Congruence Theorem
Answer:
AAS
Step-by-step explanation:
both angles show congruence marks and one side shows a congruency mark, so it would be angle angle side, aka AAS. boom roasted.
Suppose that the velocity v (t) (in meters per second) of a sky diver falling near the Earth’s surface is given by the following exponential function, where time t is the time after diving measured in seconds.
The equation of the velocity is given by the exponential:
\(v(t)=53-53e^{-0.24t}\)Let us say that the sky driver's velocity will be 47 m/s at t₁. Then, using the expression above:
\(\begin{gathered} v(t_1)=47 \\ 53-53e^{-0.24t_1}=47 \end{gathered}\)Solving for t₁:
\(\begin{gathered} \frac{53-47}{53}=e^{-0.24t_1} \\ \ln (\frac{6}{53})=-0.24t_1 \\ t_1=9.1s \end{gathered}\)
Consider a rotation of d degrees around center O. Let P be a point other than O.
a. Which direction is point P rotated when d < 0?
b. Which direction is point P rotated when d ≥ 0?
Step-by-step explanation:
d < 0 : clockwise
d >= 0 : counterclockwise
think back to trigonometry and angles per se.
0 degrees is considered flat right in the middle.
with growing degrees the indicator moves counterclockwise.
90 degrees is then at the top in the middle.
180 degrees is flat on the left in the middle.
270 degrees is at the bottom in the middle.
Katye received 15 gifts and a total of $100 in cash for her birthday. She buys one book that costs $23, and she wants to donate $10 to each of several local charities. How much money will Katye have left over if she donates to as many charities as possible?Describe steps you would use to solve the problem. You do not need to find the answer.
Answer:
To solve this problem, we need to subtract the cost of the book and the total amount donated to charities from the total amount of cash Katye received for her birthday. Here are the steps:
Add up the value of the gifts Katye received:
Total value of gifts = (value of gift 1) + (value of gift 2) + ... + (value of gift 15)
Add up the value of the cash Katye received:
Total cash = $100
Subtract the cost of the book from the total cash:
Cash remaining after buying the book = $100 - $23
Determine the maximum number of $10 donations that Katye can make:
Maximum number of $10 donations = (cash remaining after buying the book) / $10
Multiply the maximum number of donations by $10 to get the total amount donated:
Total amount donated = (maximum number of $10 donations) x $10
Subtract the cost of the book and the total amount donated from the total cash:
Cash remaining = $100 - $23 - (total amount donated)
The final answer will be the cash remaining after these calculations
I'm not sure how to start this problemApproximate (b) to nearest 10th
ai) y = 3.32673x + 86.32673
ii) r = 0.944502376
b) 179.5 cm
Explanation:Regression equation model is in the form:
\(\begin{gathered} y\text{ = ax + b} \\ a\text{ = slope} \\ b\text{ = y-intercept} \end{gathered}\)To get the model that shows the relationship between x and y, we will use a regression calculator:
\(\begin{gathered} \text{The model is given by:} \\ y=3.32673x+86.32673 \end{gathered}\)ai) a = slope, b = y-intercept of the function
\(\begin{gathered} \text{from the model we got:} \\ m\text{ = }3.32673 \\ \text{slope = }3.32673 \\ b\text{ = y-intercept} \\ b\text{ = }86.32673 \end{gathered}\)\(\begin{gathered} aii)\text{ r = correlation coefficient} \\ r\text{ = }\frac{S_{xy}}{\sqrt[]{S_{x\times\text{ }\times}S_{yy}}} \\ \\ \text{From the model, r = }0.944502376 \end{gathered}\)b) when feet = 28 cm long, height = ?
x = 28, y = ?
\(\begin{gathered} \text{substitute for x in the model:} \\ y=3.32673x+86.32673 \\ y=3.32673(28)+86.32673 \\ y=\text{ }179.47517 \end{gathered}\)To the nearest tenth number, the height 179.5 cm
Find the area of the parallelogram
Answer:
1191 cm²
Step-by-step explanation:
Area of parallelogram = base X vertical height.
Call the vertical line h.
h/ sin 80 = 7/ sin 10
h = (7 sin 80) / sin 10
= 39.7.
Area of parallelogram = 30 X 39.7
= 1191 cm²
The Area of Parallelogram whose side length is 30 cm is 1,190.952 square cm.
Given:
Side length = 30 cm
Using Trigonometry
tan 80 = P / Base
5.6712 = P / 7
P = 39.6984 cm
Using the formula for Area of parallelogram
= Base x height
= 30 x 39.6984
= 1,190.952 square cm.
Therefore, the area is 1,190.952 square cm.
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How many 300mL glasses can be filled from 1L bottle fresh milk?
Answer:
First you should know every Liter is 1000ml
so now we know we have a 1000ml bottle of milk
now you should divide 1000 by 300
and the answer is 3 glasses and one third glass
Step-by-step explanation:
mili = 10^-3
liter = dm³
deci = 10^-1
dm³ = (10^-1)³ =10^-3 m³
miliLiter = 10^-3 × 10^-3 = 10^-6m³
300 ml = 3×10² × 10^-6 = 3 × 10^-4
10^-3 ÷ (3× 10^-4)= 3.3333
Answer:
3 glasses (with the remainder of 0.3333 ml)
Step-by-step explanation:
How many 300mL glasses can be filled from 1L bottle fresh milk?convert liters to milliliters
1L = 1000 ml
divide the milliliters in the bottle by the milliliters of one glass1000 : 300 = 3.33
3 glasses (with the remainder of 0.3333 ml)
please help me this is confusing please add an explanation to it
Answer:
2
Step-by-step explanation:
As it would look better.
1 would make the graph too big
12 would be useless as there are no "answers" more than 12
10 would be useless too as the biggest number used is 10. therefore, 5, 7 would be cramped and too hard to figure out.
Starbucks customers are complaining that a small cup of coffee at a local Starbucks coffee shop does not contain as much coffee as it should. On average, Starbucks claims that a small cup of coffee contains 360 grams of coffee. The customers decide to order 20 cups of coffee at random times; on average their cups contained 356 grams, and a standard deviation of 9 grams.
Required:
What is the null hypothesis?
A 799.99 television is selling for 13% off. Find the final price of the television if the sales tax is 6%
According to an NRF survey conducted by BIGresearch, the average family spends about $237 on electronics (computers, cell phones, etc.) in back-to-college spending per student. Suppose back-to-college family spending on electronics is normally distributed with a standard deviation of $54. If a family of a returning college student is randomly selected, what is the probability that: (a) They spend less than $150 on back-to-college electronics? (b) They spend more than $390 on back-to-college electronics? (c) They spend between $120 and $175 on back-to-college electronics?
Answer:
(a) Probability that a family of a returning college student spend less than $150 on back-to-college electronics is 0.0537.
(b) Probability that a family of a returning college student spend more than $390 on back-to-college electronics is 0.0023.
(c) Probability that a family of a returning college student spend between $120 and $175 on back-to-college electronics is 0.1101.
Step-by-step explanation:
We are given that according to an NRF survey conducted by BIG research, the average family spends about $237 on electronics in back-to-college spending per student.
Suppose back-to-college family spending on electronics is normally distributed with a standard deviation of $54.
Let X = back-to-college family spending on electronics
SO, X ~ Normal(\(\mu=237,\sigma^{2} =54^{2}\))
The z score probability distribution for normal distribution is given by;
Z = \(\frac{X-\mu}{\sigma}\) ~ N(0,1)
where, \(\mu\) = population mean family spending = $237
\(\sigma\) = standard deviation = $54
(a) Probability that a family of a returning college student spend less than $150 on back-to-college electronics is = P(X < $150)
P(X < $150) = P( \(\frac{X-\mu}{\sigma}\) < \(\frac{150-237}{54}\) ) = P(Z < -1.61) = 1 - P(Z \(\leq\) 1.61)
= 1 - 0.9463 = 0.0537
The above probability is calculated by looking at the value of x = 1.61 in the z table which has an area of 0.9463.
(b) Probability that a family of a returning college student spend more than $390 on back-to-college electronics is = P(X > $390)
P(X > $390) = P( \(\frac{X-\mu}{\sigma}\) > \(\frac{390-237}{54}\) ) = P(Z > 2.83) = 1 - P(Z \(\leq\) 2.83)
= 1 - 0.9977 = 0.0023
The above probability is calculated by looking at the value of x = 2.83 in the z table which has an area of 0.9977.
(c) Probability that a family of a returning college student spend between $120 and $175 on back-to-college electronics is given by = P($120 < X < $175)
P($120 < X < $175) = P(X < $175) - P(X \(\leq\) $120)
P(X < $175) = P( \(\frac{X-\mu}{\sigma}\) < \(\frac{175-237}{54}\) ) = P(Z < -1.15) = 1 - P(Z \(\leq\) 1.15)
= 1 - 0.8749 = 0.1251
P(X < $120) = P( \(\frac{X-\mu}{\sigma}\) < \(\frac{120-237}{54}\) ) = P(Z < -2.17) = 1 - P(Z \(\leq\) 2.17)
= 1 - 0.9850 = 0.015
The above probability is calculated by looking at the value of x = 1.15 and x = 2.17 in the z table which has an area of 0.8749 and 0.9850 respectively.
Therefore, P($120 < X < $175) = 0.1251 - 0.015 = 0.1101
Can someone please help me am stuck on this, thanks.
Answer:
First box: -5, 0, 6, 9
Second box: 10, 12.5
Step-by-step explanation:
4x-12≤24
4x≤24+12
4x≤36
x≤36÷4
x≤9
So the first box would have all the solutions less than or equal to 9:
-5, 0, 6, 9
And the second box would have the solutions greater than 9:
10, 12.5
i need help with this qnq
Answer:
The answer is 50km
Step-by-step explanation:
This is because IGH = TUV so IG = TU which is 50 kilometers.
These shapes are similar.
Find X.
5
X
5
30
24
30
The value of x is 4.
To determine the value of x, we can use the concept of similarity between shapes.
Similar shapes have corresponding sides that are proportional to each other.
Given the dimensions of the first shape as 5, x, and 5, and the dimensions of the second shape as 30, 24, and 30, we can set up the following proportion:
5/x = 30/24
To solve for x, we can cross-multiply:
30 · x = 5 · 24
30x = 120
Dividing both sides of the equation by 30:
x = 120 / 30
x = 4
Therefore, the value of x is 4.
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At a family reunion, each of Shamar's aunts and uncles is getting photographed once. The aunts are taking
pictures in groups of 5 and the uncles are taking pictures in groups of 10. If Shamar has the same total number
of aunts and uncles, what is the minimum number of aunts that Shamar must have?
The minimum number of aunts that Shamar must have based on the information provided is 10.
What are the possible number of uncles and aunts?It is known that uncles will take a photograph in groups of 10, while aunts will take a photograph in groups of 5. Based on this, the possible number for each are:
Uncles: 10, 20, 30, 40, 50
Aunts: 5, 10, 15, 20, 25
How to find the minimum number of relatives?In this case, the minimum number is the LCM or Least Common Multiple and based on the previous list, this number is 10.
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find the lcm of 6x^2and15xy^2z
Step-by-step explanation:
it is very easy
just take common factor a day remaining factor
so at last common factor multiplied by remaining factor
There are 6 times as many dogs as cats. If total the total number of dogs and cats is 21, how many dogs are there?
there are 18 dogs and 3 cats.
Moshde runs a hairstyling business from her house. She charges $40 for a haircut and style. Her monthly expenses are $1140. She wants to be about to put at least $1188 per month into her savings account order yo open her own salon. How many "cuts & styles" must she do to save at least $1188 per month.
Answer:
Moshde must do 59 cuts & styles per month
Step-by-step explanation:
she has to earn $1140+$1188=$2328
since she get $40 for a haircut and style
then she need to \(\frac{2328}{40}=58,2\) roundup it 59
Moshde must do 59 cuts & styles per month
Write the slope-intercept form of the equation of each line 16x+3y=24
Answer:
y=-16/3x+8
Step-by-step explanation:
16x+3y=24
3y=24-16x
3y=-16x+24
y=-16/3x+24/3
y=-16/3x+8
A building is 50 feet tall. Imagine you are standing 30 feet away from it. What is the angle when you are looking up at your friend on the top of
building?
36.9 59.0 53.1 31.0
Answer:
53.1
Step-by-step explanation:
I used my protractor and that is what I got there is no detailed explanation that I came up with
Write down the augmented matrix corresponding to the system of equations shown below.
Note: Write an equation in each answer field and do not solve the system.
The augmented matrix corresponding to the system of equations in this problem is given as follows:
[-6 -5 -4 7].
[7 -9 -1 -7].
[-9 -3 -6 7].
How to construct the augmented matrix?The first row is constructed according to the coefficients of the first equation, hence it is given as follows:
[-6 -5 -4 7].
The second row is constructed according to the coefficients of the second equation, hence it is given as follows:
[7 -9 -1 -7].
The third row is constructed according to the coefficients of the third equation, hence it is given as follows:
[-9 -3 -6 7].
Hence the matrix is given as follows:
[-6 -5 -4 7].
[7 -9 -1 -7].
[-9 -3 -6 7].
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Given the following definitions: U = {1, 2, 3, 4, 5, 6, 7} A = {1, 2, 4, 5} B = {1, 3, 5, 7} How many elements are in A ∪ B' ? Your Answer:
Consequently, there are 5 elements in A B'.
Given the following definitions:
U = {1, 2, 3, 4, 5, 6, 7}A = {1, 2, 4, 5}B = {1, 3, 5, 7}
The complement of a set B is the set of all elements that belong to the universal set U but not to B.
A’ = {x | x ∈ U and x ∉ A} = {3, 6, 7}B’ = {x | x ∈ U and x ∉ B} = {2, 4, 6}
The union of sets A and B is the set of all elements that belong to set A or set B, or both.
A ∪ B = {x | x ∈ A or x ∈ B}
= {1, 2, 3, 4, 5, 7}A ∪ B'
= {x | x ∈ A or x ∈ B’}
= {1, 2, 4, 5, 6}
Therefore, the number of elements in A ∪ B' is 5.
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PLEASE HELP ME!!! THANK YOU
The interval notation for the solution set is (-∞, -4] and the number line is on the image at the end.
How to find the solution set of the ienquality?Here we want to find the solution set of the inequality below:
x ≤ -4
First let's do the interval notation. This will be the set that contains all the numbers from negative infinity to -4 (with -4 included, so we need to have a closed set at that end)
This is written as:
(-∞, -4]
The use of the symbols [ ] means that the element belongs to the set.
Now to the number line, we will have a closed circle at x = -4 (because it is a solution) and a line that goes to the left of it. You can see an example in the graph at the end.
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Suppose you start with one liter of vinegar and repeatedly remove 0.14 L, replace with water, mix, and repeat. a. Find a formula for the concentration after n steps. b. After how many steps does the mixture contain less than 9% vinegar?
Formula for the concentration after n steps is \(C(n) = C(0) * (0.86)^n\) and
after 11 steps, the mixture contains less than 9% vinegar.
What is concentration?
Concentration in science refers to the amount of a particular substance (the solute) that is dissolved in a given amount of a solution. It is typically expressed in units of moles per liter (M or mol/L) or as a percentage or fraction of the total solution.
a. Let C(n) be the concentration of vinegar after n steps. At each step, we remove 0.14 L of the mixture, which contains C(n) liters of vinegar. So we are left with (1 - C(n)) liters of water. We then add back 0.14 L of water, giving us a total volume of 1 liter. Therefore, the concentration after one step is:
\(C(1) = C(0) * \frac{1 - 0.14}{1}\)
where C(0) is the initial concentration of vinegar, which is 1 liter per liter or 100%. After two steps, we repeat the process:
C(2) = C(1) * \(\frac{1 - 0.14}{1}\)
Substituting the formula for C(1), we get:
C(2) = C(0) * \((\frac{1 - 0.14}{1}) * (\frac{1 - 0.14}{1})\)
or, more generally:
\(C(n) = C(0) * (0.86)^n\)
b. We want to find the smallest integer n such that C(n) < 0.09 or 9%. Substituting the formula from part (a), we get:
\(C(0) * (0.86)^n < 0.09\)
Dividing both sides by C(0), we get:
\((0.86)^n < 0.09\)
Taking the natural logarithm of both sides, we get:
n * ln(0.86) < ln(0.09)
Dividing both sides by ln(0.86), we get:
n > ln(0.09) / ln(0.86)
Using a calculator, we get:
n > 10.7
Since n must be an integer, the smallest possible value of n is 11. Therefore, after 11 steps, the mixture contains less than 9% vinegar.
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When interpreting the covariance between variables x and y, which of the following statements is the most accurate? - A negative value of covariance indicates that, on average, if x is above its mean, then y tends to be above its mean - A positive value of covariance indicates that, on average, if x is above its mean, then y tends to be below its mean. - A positive value of covariance indicates that, on average, if x is below its mean, then y tends to be below its mean. - A negative value of covariance that, on average, if x is below its mean, then y tends to be below its mean
When the interpreting the covariance between X and Y , a positive value of covariance indicates that , on average ,if x below its mean then y tends to be below its mean.
What is meant by covariance?Covariance is a statistical measure that indicates how two variables are related to each other. Specifically, covariance measures the degree to which the values of two variables vary together. If two variables have a positive covariance, it means that they tend to increase or decrease together. Conversely, if two variables have a negative covariance, it means that they tend to move in opposite directions.
Mathematically, covariance is calculated as the average of the products of the deviations of each value from their respective means, for two variables. A positive covariance indicates that the two variables tend to be above or below their respective means together, while a negative covariance indicates that one variable tends to be above its mean when the other is below its mean, and vice versa.
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1) Kelly has 15 blue bracelets and 12 green bracelets. What is the ratio of Kelly’s blue bracelets to green bracelets?
2) Over the winter it snowed 36 days out of 40 days. What is the snow days to days ratio in simple form?
3) The ratio of girls to boys who participated in the quiz bowl was 7:5. There were 42 girls in the competition. How many boys participated?
1)The ratio of Kelly’s blue bracelets to green bracelets is 5:4.
2)The snow days to days ratio is 20:1
3)There are 42 girls in the competition. The ratio of girls to boys who participated in the quiz bowl was 7 : 5. Solving the two ratios, Therefore, There are 30 boys in the competition.
Define ratio?A ratio is a ratio that compares two quantities.A proportion is the difference between two ratios. To write a ratio, do the following: Determine whether the ratio is a part-to-part or a part-to-whole ratio. If necessary, compute the parts and total.The ratio is defined as the division of two numbers or quantities. The ratio is a relationship between the quantities of two or more objects that indicates how much of one is contained in the other. The ratio formula can be used to convert a ratio into a fraction. a:b = a/b is the ratio formula for any two quantities, say a and b.To learn more about ratio refer to:
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1)The ratio of Kelly’s blue bracelets to green bracelets is 5:4.
2)The snow days to days ratio is 20:1
3)There are 42 girls in the competition. The ratio of girls to boys who participated in the quiz bowl was 7 : 5. Solving the two ratios, Therefore, There are 30 boys in the competition.
Define ratio?
A ratio is a ratio that compares two quantities.A proportion is the difference between two ratios.To write a ratio, do the following: Determine whether the ratio is a part-to-part or a part-to-whole ratio. If necessary, compute the parts and total.The ratio is defined as the division of two numbers or quantities.The ratio is a relationship between the quantities of two or more objects that indicates how much of one is contained in the other.The ratio formula can be used to convert a ratio into a fraction. a:b = a/b is the ratio formula for any two quantities, say a and b.To learn more about ratio refers to:
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graph the equation.
H
-2
-1
0
2
4y + 16x = 28
Y
Ordered Pair
10
-5
10+
5
-S
-10-
Clear All
y
5
५
IC
The ordered pairs are (1,3) , (2, -1) , (3,-5) , (4,-9)
What is the solution to a linear equation?The solution of a linear equation is defined as the points, in which the lines represent the intersection of two linear equations. In other words, the solution set of the system of linear equations is the set of all possible values to the variables that satisfies the given linear equation.
Given here: The equation as 4y+16x=28 or y+4x=7
putting (1,3) in the equation we get 3+4×1=7
Similarly we can find the ordered pair as (2, -1) , (3,-5) , (4,-9)
Hence, The ordered pairs are (1,3) , (2, -1) , (3,-5) , (4,-9)
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HELPPP MEEE PLEASEE WITH THIS QUESTION
The values of x and y are given as follows:
x = 18.\(y = 6\sqrt{10}\)What is the geometric mean theorem?The geometric mean theorem states that the length of the altitude drawn from the right angle of a triangle to its hypotenuse is equal to the geometric mean of the lengths of the segments formed on the hypotenuse.
The bases for this problem are given as follows:
2 and x.
The altitude is given as follows:
6.
Hence the length x is given as follows:
2x = 6²
2x = 36
x = 18.
Applying the Pythagorean Theorem, the length y is given as follows:
y² = 18² + 6²
y² = 360
\(y = \sqrt{36 \times 10}\)
\(y = 6\sqrt{10}\)
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How do I make a line plot using data I collected.
Step-by-step explanation:
To create a line plot, first create a number line that includes all the values in the data set. Next, place an X (or dot) above each data value on the number line. If a value occurs more than once in a data set, place an Xs over that number for each time it occurs.