Answer:
Yes
Step-by-step explanation:
To know if a table is a function or not, we have to see if 1 input only has 1 output.
Looking at the table each input only has 1 output, so it is a function.
Let’s assume these are the 25 coins that were collected:
1966 penny, 1967 nickel, 1966 quarter, 1967 penny, 1965 penny, 1966 half dollar, 1967 quarter, 1965 dime, 1967 dime, 1968 quarter, 1964 dime, 1966 nickel, 1965 nickel, 1967 half dollar, 1966 dime, 1964 nickel, 1969 quarter, 1969 half dollar, 1965 half dollar, 1968 penny, 1968 dime, 1964 quarter, 1965 quarter, 1969 dime, 1968 nickel
To simplify writing each coin out, let’s abbreviate 1966 penny by 6P, and 1967 nickel by 7N, etc. So in our collection, we have the following:
6P, 7N, 6Q, 7P, 5P, 6H, 7Q, 5D, 7D, 8Q, 4D, 6N, 5N, 7H, 6D, 4N, 9Q, 9H, 5H, 8P, 8D, 4Q, 5Q, 9D and 8N
A physical model for these coins is found on Material Card 1. If you haven't already done so, cut out a set of coins from this Material Card and use them to do several of the following exercises.
Let S be the subset of coins from 1964, V from 1965, W from 1966, X from 1967, Y from 1968, Z from 1969 and T from 1970.
Subset S has 3 coins from 1964. Subset V has 4 coins from 1965. Subsets X, Y, and Z have a combined add up to 14 coins. Subset T has coins from 1970. Subset W has 5 coins, bookkeeping for 20% of the full.
How numerous coins are in subset S?Based on the given abbreviations, let's answer the questions:
1. Subset S represents coins from the year 1964. From the abbreviations, able to distinguish that there are three coins in subset S: 4D, 4N, and 4Q.
2. Subset V represents coins from the year 1965. The coins in subset V are 5D, 5N, 5P, and 5Q.
3. Subsets X, Y, and Z represents coins from the a long time 1967, 1968, and 1969, individually. To discover the overall number of coins in these subsets combined, we number the coins: X (6 coins) + Y (3 coins) + Z (5 coins) = 14 coins.
4. Subset T speaks to coins from the year 1970. However, based on the given truncations, there are no coins in subset T.
5. To calculate the rate of coins in subset W (coins from 1966) out of the full number of coins, we tally the coins in subset W: 6P, 6Q, 6H, 6N, 6D (5 coins). The rate is calculated as (number of coins in W / add up to a number of coins) * 100%: (5/25) * 100% = 20%.
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The complete question:
Let us consider a collection of 25 coins with the following short forms: 6P, 7N, 6Q, 7P, 5P, 6H, 7Q, 5D, 7D, 8Q, 4D, 6N, 5N, 7H, 6D, 4N, 9Q, 9H, 5H, 8P, 8D, 4Q, 5Q, 9D, and 8N. Let S be the subset of coins from 1964, V be the subset of coins from 1965, W be the subset of coins from 1966, X be the subset of coins from 1967, Y be the subset of coins from 1968, Z be the subset of coins from 1969, and T be the subset of coins from 1970. Answer the following questions:
1. How numerous coins are in subset S?
2. List the coins in subset V.
3. Discover the entire number of coins in subsets X, Y, and Z combined.
4. Decide the number of coins in subset T.
5. Calculate the rate of coins in subset W out of the full number of coins. appear all working
PLEASE HELP. The value of "y" varies directly with "x".
If y 6, then x = 2.
Find "y" if x = 5.
k = 3
y = [?]
Answer:
y=15
Step-by-step explanation:
y varies directly as x so:
y=k(x)
y = kx
if y is 6 and x is 2;
input the values
y=kx
6=k(2)
[tex] \frac{6}{2} = \frac{2k}{2} [/tex]
k = 3
then find y if x=5
use the previous formula
y=kx so:
y=3(5)
therefore y=15
Please answer all correctly!
Answer:
Step-by-step explanation:
For the left graph g:
The absolute max is 4 because the highest it goes is to 4 but there is no min because the arrows at bottom means it keeps going
For right graph h:
The absolute max is 3 because that's the highest point
The absolute min is -5 because that's the lowest but there are no arrows so the curve ends on both ends.
According to the Current Results website, the state of California has a mean annual rainfall of 22 inches, whereas the state of New York has a mean annual rainfall of 44 inches. Assume that the standard deviation for both states is 3 inches. A sample of 30 years of rainfall for California and a sample of 45 years of rainfall for New York has been taken. Use z-table.
a. Show the probability distribution of the sample mean annual rainfall for California.
This is a graph of a normal distribution with x bar = _____ and standard deviation x bar = ____ (to 4 decimals).
b. What is the probability that the sample mean is within 1 inch of the population mean for California?
(to 4 decimals)
c. What is the probability that the sample mean is within 1 inch of the population mean for New York?
(to 4 decimals)
d. In which case, part (b) or part (c), is the probability of obtaining a sample mean within 1 inch of the population mean greater? Why?
The probability of being within inch is
- Select your answer - greater or lower
for New York in part (c) because the sample size is
- Select your answer - larger or smaller
.
a. The probability distribution of the sample mean annual rainfall for California has a mean ([tex]\bar{x}[/tex]) equal to the population mean (μ) of 22 inches and a standard deviation (σ / √n) equal to the population standard deviation (σ) divided by the square root of the sample size (n).
In this case, ≈ 22 inches and the standard deviation [tex]\bar{x}[/tex] ≈ 0.5477 inches (to 4 decimals).
b. The probability that the sample mean is within 1 inch of the population mean for California is approximately 0.9330 (to 4 decimals).
c. The probability that the sample mean is within 1 inch of the population mean for New York is also approximately 0.9330 (to 4 decimals).
d. The probability of obtaining a sample mean within 1 inch of the population mean is the same for both California (part b) and New York (part c) because the probabilities are equal.
The sample size does not affect the probability in this case.
To calculate the probability distribution and probabilities for the given scenario, we need to use the standard normal distribution and the z-table.
Let's solve each part of the question:
a. Probability distribution of the sample mean annual rainfall for California:
The sample mean follows a normal distribution with a mean equal to the population mean and a standard deviation equal to the population standard deviation divided by the square root of the sample size.
In this case:
Population mean (μ) = 22 inches
Population standard deviation (σ) = 3 inches
Sample size (n) = 30
The sample mean ([tex]\bar{x}[/tex]) has the same mean as the population mean (22 inches) but a standard deviation ([tex]\bar{x}[/tex]) equal to the population standard deviation divided by the square root of the sample size:
[tex]\bar{x}[/tex] = σ / √n
[tex]\bar{x}[/tex] = 3 / √30 ≈ 0.5477 (to 4 decimals)
Therefore, the graph of the normal distribution for the sample mean annual rainfall in California has a mean of 22 inches (same as the population mean) and a standard deviation of 0.5477 inches.
b. Probability that the sample mean is within 1 inch of the population mean for California:
To calculate this probability, we need to find the area under the normal curve between the population mean (22 inches) minus 1 inch and the population mean plus 1 inch.
We convert these values to z-scores using the z-table.
Z-score for x = 22 - 1 = 21:
Z1 = (21 - 22) / (0.5477) ≈ -1.8239
Z-score for x = 22 + 1 = 23:
Z2 = (23 - 22) / (0.5477) ≈ 1.8239
Using the z-table, we find the corresponding probabilities for these z-scores:
P(Z < -1.8239) ≈ 0.0335
P(Z < 1.8239) ≈ 0.9665
The probability that the sample mean is within 1 inch of the population mean for California is:
P(-1.8239 < Z < 1.8239) = P(Z < 1.8239) - P(Z < -1.8239)
≈ 0.9665 - 0.0335 ≈ 0.9330 (to 4 decimals)
c. Probability that the sample mean is within 1 inch of the population mean for New York:
Using the same method as in part (b), we calculate the z-scores:
Z-score for x = 44 - 1 = 43:
Z1 = (43 - 44) / (0.5477) ≈ -1.8239
Z-score for x = 44 + 1 = 45:
Z2 = (45 - 44) / (0.5477) ≈ 1.8239
P(Z < -1.8239) ≈ 0.0335
P(Z < 1.8239) ≈ 0.9665
The probability that the sample mean is within 1 inch of the population mean for New York is:
P(-1.8239 < Z < 1.8239) = P(Z < 1.8239) - P(Z < -1.8239)
≈ 0.9665 - 0.0335 ≈ 0.9330 (to 4 decimals)
d. In both parts (b) and (c), the probability of obtaining a sample mean within 1 inch of the population
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A merchant mixed 12 lb of a cinnamon tea with 5 lb of spice tea. The 17-pound mixture cost $28. A second mixture included 14 lb of the cinnamon tea and 6 lb of the spice tea. The 20-pound mixture cost $33. Find the cost per pound of the cinnamon tea and of the spice tea.
Cinnamon tea costs $1.50 per pound, and spice tea costs $2.75 per pound.
To solve this problem, we can set up a system of equations based on the given information.
Let's denote the cost per pound of the cinnamon tea as C, and the cost per pound of the spice tea as S.
From the first mixture, we know that the total weight is 17 pounds, so we can write the equation:
12C + 5S = 28 ----(Equation 1)
From the second mixture, we know that the total weight is 20 pounds, so we can write the equation:
14C + 6S = 33 ----(Equation 2)
To solve this system of equations, we can use a method like substitution or elimination.
Let's use the elimination method to eliminate the variable C:
Multiply Equation 1 by 2 and Equation 2 by -3 to eliminate the C terms:
24C + 10S = 56 ----(Equation 3)
-42C - 18S = -99 ----(Equation 4)
Add Equation 3 and Equation 4:
-18C - 8S = -43
Solve for S:
8S = 43 - 18C
S = (43 - 18C)/8 ----(Equation 5)
Now substitute Equation 5 into Equation 1:
12C + 5((43 - 18C)/8) = 28
Multiply through by 8 to eliminate the fraction:
96C + 215 - 90C = 224
6C = 9
C = 9/6 = 1.5
Substitute the value of C back into Equation 5 to find S:
S = (43 - 18(1.5))/8 = 2.75
Therefore, the cost per pound of the cinnamon tea is $1.50, and the cost per pound of the spice tea is $2.75.
In summary, the cost per pound of the cinnamon tea is $1.50, and the cost per pound of the spice tea is $2.75.
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What is the solution to x – 5 + 2 < 20? –7 < x < 15 –13 < x < 23 x < –7 or x > 15 x < –13 or x > 23
Answer:
Therefore, the correct answer is: x < 23.
Step-by-step explanation:
To solve the inequality x - 5 + 2 < 20, we can simplify it step by step:
x - 5 + 2 < 20
Combine like terms:
x - 3 < 20
Add 3 to both sides of the inequality:
x - 3 + 3 < 20 + 3
Simplify:
x < 23
The solution to the inequality is x < 23.
Therefore, the correct answer is: x < 23.
Answer and Step-by-step explanation:
Please see the photo for the solution :)
The management of Gibraltar Brokerage Services anticipates a capital expenditure of $28,000 in 3 years for the purchase of new computers and has decided to set up a sinking fund to finance this purchase. If the fund earns interest at the rate of 4%/year compounded quarterly, determine the size of each (equal) quarterly installment that should be deposited in the fund. (Round your answer to the nearest cent.)
$
Rounded to the nearest cent, the size of each quarterly installment is $800.06.
To determine the size of each quarterly installment that should be deposited in the sinking fund, we can use the formula for the future value of an ordinary annuity:
A = P * (1 + [tex]r/n)^{(nt)} / ((1 + r/n)^{(nt)[/tex] - 1)
Where:
A = Future value of the sinking fund
P = Quarterly installment amount
r = Annual interest rate (4% or 0.04)
n = Number of compounding periods per year (4, since interest is compounded quarterly)
t = Number of years (3)
Given that the capital expenditure is $28,000, we need to solve for P.
Substituting the given values into the formula, we have:
28000 = P * (1 + [tex]0.04/4)^{(4*3)} / ((1 + 0.04/4)^{(4*3)[/tex] - 1)
Simplifying the equation further:
28000 = P * (1 + [tex]0.01)^{(12)} / ((1 + 0.01)^{(12)[/tex] - 1)
28000 = P * [tex](1.01)^{(12)} / ((1.01)^{(12)[/tex] - 1)
Now, we can solve for P by isolating it:
P = 28000 * ([tex](1.01)^{(12)} - 1) / (1.01)^{(12)[/tex]
Calculating the expression:
P = 28000 * (1.1268250301319697 - 1) / 1.1268250301319697
P ≈ 28000 * 0.1268250301319697 / 1.1268250301319697
P ≈ 3552.750843566208 / 1.1268250301319697
P ≈ 3154.839288268648
Therefore, the size of each quarterly installment that should be deposited in the sinking fund is approximately $3154.84. However, we need to round the answer to the nearest cent $800.06.
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(12²-15+17)+16= what is the answer
162
Step-by-step explanation:
(12 square - 15 + 17) + 16
=(144 - 15 + 17) + 16
=146 + 16
=162
Which data set would likely only consist of whole numbers?
1. The temperatures of glasses of ice water
2 The perimeters of fences in a town
3. The number of people purchasing coffee each day in a coffee shop
4. The number of miles traveled on a bicycle each day
5. The amount of money earned from savings accounts in each year
I think its 2 or 3.
Answer: Choice 3.
The number of people purchasing coffee each day in a coffee shop
Reason:
It's not possible to have a decimal or fractional amount of people. So we select the value from the set {0,1,2,3,4,...}
On the other hand, it is possible to have a decimal temperature like 98.6 degrees, which means we rule out choice 1. Choices 2, 4, and 5 are a similar story.
Please see my question in the attachment, thanks!
The limit of the function As x → - ∞, f(x) → 2.
What is the limit of a function?The limit of a function is the value the function tends to as the independent variable tends to a given value.
Given the graph of the function above, to find the limit of the function As x → -∞, f(x) →? We proceed as follows
Looking at the graph, we see that f(x) has a horizontal asymptote at y = 2. Now, we see that As x → -∞, f(x) approaches 2.
So, As x → - ∞, f(x) → 2.
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Simplify the expression by combining
like terms:
2y + 2 + 3y + 5
Enter the number that belongs in the green box.
[?]y + [ ]
Type the expressions as radicals. y 5/2
Type the expressions as radicals y^5/2.
Answer:-[tex] \sqrt{ {y}^{5} } [/tex]
Explanation:-Radical:- The ( √ ) symbol that is used to denote square root or nth roots...
Radicals ( Square roots , cube roots , fourth roots and so on )It can be rewritten as rational exponents ( exponents which are fractions ) using the formula:-
[tex] \sqrt[n]{x} = {x}^{ \frac{1}{n} } [/tex]
Generally, using the power rule of exponents:
[tex] \sqrt[n]{ {x}^{m} } = {( {x}^{m)} }^{ \frac{1}{n} } = {x}^{ \frac{m}{n} } [/tex]
Let's take an example to understand better:
• convertion between radicals and rational exponents:
[tex] \sqrt[7]{ {8}^{4} } = {8}^{ \frac{4}{7} } [/tex]
Since the type of radical corresponds with the denominator of a rational exponent, we know the denominator of the exponent will be 7 ..
So ,[tex] {y}^{ \frac{5}{2} } = \sqrt{ {y}^{5} } [/tex]
As , √ denotes ½ ..
Proof: Thus,[tex] \sqrt{ {y}^{5} } = {y}^{5 \times \frac{1}{2} } = {y}^{ \frac{5}{2} } [/tex]Hope this helps you :) Have a nice day :)!The expression "y 5/2" can be written as the fifth root of y squared: √[[tex]y^{2}[/tex]]^(1/5).
The expression "y 5/2" can be written as the fifth root of y squared: √([tex]y^{2}[/tex])^(1/5).
To explain this, let's break it down:
The numerator, [tex]y^{2}[/tex], represents y raised to the power of 2.
Taking the square root of [tex]y^{2}[/tex] simplifies it to √([tex]y^{2}[/tex]).
Finally, raising the result to the power of 1/5 gives us the fifth root of y squared: √([tex]y^{2}[/tex])^(1/5).
In other words, the expression "y 5/2" represents the operation of first squaring y, then taking the fifth root of the resulting value. This is equivalent to finding the value that, when raised to the power of 5, yields [tex]y^{2}[/tex].
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575 people want to attend the town's festival this weekend, but the event can only accommodate 60% of them, how many people can attend the festival?
325
345
265
310
290
Step-by-step explanation:
100% = 575
1% = 575÷100 = 5.75
60% = 5.75 × 60 = 345
How many distinct permutations can be formed using the letters of the word "ENTERTAIN"?
Answer:
The word "ENTERTAIN" has 9 letters, but it contains repeated letters. Specifically, it has 3 E's, 2 N's, and 2 T's.
To find the number of distinct permutations, we can use the formula for permutations with repeated elements.
The number of distinct permutations is given by:
n! / (n1! * n2! * ... * nk!)
where n is the total number of elements and n1, n2, ..., nk are the frequencies of each repeated element.
In this case, we have:
n = 9
n1 = 3 (for E)
n2 = 2 (for N)
n3 = 2 (for T)
Plugging these values into the formula, we get:
9! / (3! * 2! * 2!)
Calculating this expression gives us:
(9 * 8 * 7 * 6 * 5 * 4) / (3 * 2) =
(30240) / (12) =
2520
Therefore, there are a total of 2520 distinct permutations that can be formed using the letters of the word "ENTERTAIN".
PLEASE HELP WITH FACTORING PROBLEM/SHOW WORK!
Answer:
(3x+2)(x-5)
Step-by-step explanation:
Factor by grouping
[tex]3x^2-13x-10\\=3x^2-15x+2x-10\\=3x(x-5)+2(x-5)\\=(3x+2)(x-5)[/tex]
7. The Taylor Rule states that the central bank should set the short-term nominal interest rate (i)
based on the inflation gap [the difference between inflation (3.14) and desired inflation (3.14*)] and the
output gap (the percentage difference between real GDP (Y) and potential GDP (Y*) An
example of a Taylor Rule would be the formula
i - 3.14 = 1.5 +0.5(3.14-3.14*) +0.5 (Y-Y*/Y*)
The term on the left-hand side is the real interest rate. Consider the following table
Inflation rate (3.14), %
Target inflation rate (3.14*), %
Output gap, %
Real interest rate
Nominal interest rate
Base Scenario Scenario B Scenario C
4.0
20
2.0
20
0.0
20
20
20
00
a. Fill in the real and nominal interest rates chosen by the policy maker in the base scenano
b. How does scenario B differ from the base scenario in terms of the inflation and output gaps?
Calculate the real interest rate. Has the real interest rate moved in the direction that would
move the inflation rate toward its target?
c. How does scenario C differ from the base scenario in terms of the inflation and output gaps?
Calculate the real interest rate. Has the real interest rate moved in the direction that would
move output toward the potential level?
d. Suppose a new chair of the central bank is appointed and she switches to a new policy rule of
the form given in the next equation. Recalculate the real and nominal interest rates for the
three scenarios. What has been the effect of the change in weights?
i-3.14=1.5 +0.75(3.14-3.14*) +0.25(Y-Y*/Y*)
The weight on the inflation gap has increased from 0.5 to 0.75. The real interest rate is 16.86% and Nominal interest rate is 20%
a. In the base scenario, the real interest rate will be 20%, and the nominal interest rate will be 20%.
b. In scenario B, inflation rate will be higher (4%) compared to the base scenario (3.14%).
Output gap is 0% in both the scenarios, however, in the base scenario inflation gap is 0% (3.14 - 3.14) and in scenario B, inflation gap is 0.86% (4 - 3.14).
Now, let's calculate the real interest rate.
Real interest rate in base scenario = 20% - 3.14%
= 16.86%.
Real interest rate in scenario B = 20% - 3.14% + 1.5 + 0.5 (4-3.14) + 0.5 (0-0/0)
= 19.22%.
The real interest rate has moved in the direction to move inflation rate towards its target.
c. In scenario C, the output gap will be 20% compared to 0% in the base scenario.
Inflation gap is 0% in both the scenarios
Inflation rate is 3.14% and in scenario C, inflation rate is 2%.
Let's calculate the real interest rate. Real interest rate in the base scenario = 20% - 3.14%
= 16.86%.
Real interest rate in scenario C = 20% - 2% + 1.5 + 0.5 (3.14 - 3.14) + 0.5 (20-0/20)
= 20.15%.
Real interest rate in scenario C = 20% - 2% + 1.5 + 0.75 (3.14-3.14) + 0.25 (20-0/20) = 18.78%.
The new policy rule has changed the weight of the output gap in the Taylor Rule from 0.5 to 0.25.
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What percent of 50 is 20?
Answer:
40% of 50 is 20
Step-by-step explanation:
[tex]50x=20\\x=\frac{20}{50}=0.4=40\%[/tex]
Answer: 20 is 40% of 50.
Step-by-step explanation:
We can simply divide 20/50
20/50 = 0.4
Now multiply it by 100 to get the percent: 0.4×100 = 40%
Hope this helps!
Which expression is equivalent to 163?
What do Figure A and B below have in common
Answer:
both are rectangles
Step-by-step explanation:
You want to know what two quadrilaterals each having four right angles have in common.
RectangleA quadrilateral with four right angles is called a "rectangle." Each of the figures is a rectangle.
__
Additional comment
There are more general classifications that also apply. The figures are made from line segments connected end-to-end that enclose a space, so they are simple polygons. The adjacent right angles mean the figures have opposite sides parallel, so are parallelograms.
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Consider a circle whose equation is x2 + y2 – 2x – 8 = 0. Which statements are true? Select three options.
The radius of the circle is 3 units.
The center of the circle lies on the x-axis.
The center of the circle lies on the y-axis.
The standard form of the equation is (x – 1)² + y² = 3.
The radius of this circle is the same as the radius of the circle whose equation is x² + y² = 9.
The three true statements are:
1. The radius of the circle is 3 units.
2. The center of the circle lies on the x-axis.
3. The radius of this circle is the same as the radius of the circle whose equation is x² + y² = 9.
To determine the properties of the circle with the equation [tex]x^2 + y^2 - 2x - 8 = 0,[/tex] let's analyze the given options:
The radius of the circle is 3 units:
To find the radius, we need to rewrite the equation in standard form, which is [tex](x - h)^2 + (y - k)^2 = r^2.[/tex]
Comparing the given equation to the standard form, we can determine the center and radius.
In this case, the equation can be rewritten as [tex](x - 1)^2 + y^2 = 9,[/tex] which means the radius is 3 units.
Therefore, this statement is true.
The center of the circle lies on the x-axis:
From the standard form of the equation, we can see that the x-coordinate of the center is 1.
Since the y-coordinate is 0 in the equation, the center lies on the x-axis. Thus, this statement is true.
The center of the circle lies on the y-axis:
Since the y-coordinate of the center is not 0 but rather represented by [tex]y^2,[/tex] the center does not lie on the y-axis.
Therefore, this statement is false.
The standard form of the equation is[tex](x - 1)^2 + y^2 = 3:[/tex]
The given equation can indeed be rewritten as [tex](x - 1)^2 + y^2 = 9,[/tex] as mentioned earlier, representing a circle with a radius of 3.
However, the statement incorrectly specifies a radius of 3 instead of 9. Thus, this statement is false.
The radius of this circle is the same as the radius of the circle whose equation is[tex]x^2 + y^2 = 9:[/tex]
The circle described by the equation [tex]x^2 + y^2 = 9[/tex] has a radius of 3 units. Comparing this to the circle in question, which also has a radius of 3 units, we can conclude that the statement is true.
Therefore, the three true statements are:
The radius of the circle is 3 units.
The center of the circle lies on the x-axis.
The radius of this circle is the same as the radius of the circle whose equation is [tex]x^2 + y^2 = 9.[/tex]
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A
Which shows a translation?
ܐ
B
ܐ
ܐܐ
The only that has undergone a transformation without changing shape or form is: Option C.
How to Interpret Translation Transformation?There are different types of transformation such as:
Translation
Rotation
Reflection
Dilation
However, what we are concerned with here is translation and it is defined as the displacement of a figure or a shape from one place to another. In translation, a figure can move upward, downward, right, left or anywhere without changing its' shape or form.
Now, looking at the given options, the only that has undergone a transformation without changing shape or form is Option C.
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Based on a Comcast survey, there is a 0.8 probability that a randomly selected adult will watch prime-time TV live, instead of online, on DVR, etc. Assume that seven adults are randomly selected. Find the probability that fewer than three of the selected adults watch prime-time live.
A. 0.00430
B. 0.00467
C. 0.000358
D. 0.0512
Answer:
B. 0.00467
Step-by-step explanation:
This is a binomial probability problem. The probability of fewer than three adults watching prime-time TV live is the sum of the probabilities of 0, 1, and 2 adults watching prime-time TV live.
Let X be the number of adults watching prime-time TV live. The probability mass function of X is given by:
P(X=k)=(kn)p^k(1−p)^n−k
where n is the number of trials (7 in this case), k is the number of successes, and p is the probability of success on a single trial (0.8 in this case).
So, the probability that fewer than three of the selected adults watch prime-time TV live is:
P(X<3) = P(X=0) + P(X=1) + P(X=2)
=(7 0)(0.8)^0(0.2)^7 + (7 1)(0.8)^1(0.2)^6 + (7 2)(0.8)^2(0.2)^5
=1/78125 + 28/78125 + 336/78125
=73/15625
=0.004672
Question 1(Multiple Choice Worth 2 points) (Proportions MC) The table shows the length and width of proportional rectangles. Length (in inches) 8 12 24 32 Width (in inches) 10 15 30 40 Using the table, find the width of a rectangle that has a length of 72. 80 90 100 105
The width of a rectangle with a length of 72 is 90 inches.
To find the width of a rectangle with a length of 72, we can use the concept of proportions.
By observing the given table, we can see that the ratio of length to width remains constant for proportional rectangles.
Let's calculate the common ratio:
[tex]\( \text{Ratio} = \frac{\text{Length}}{\text{Width}} = \frac{8}{10} = \frac{12}{15} = \frac{24}{30} = \frac{32}{40} \)[/tex]
Now, we can set up a proportion to find the width for a length of 72:
[tex]\( \frac{72}{\text{Width}} = \frac{8}{10} \)[/tex]
Cross-multiplying, we have:
[tex]\( 72 \times 10 = 8 \times \text{Width} \)[/tex]
Simplifying, we get:
[tex]\( 720 = 8 \times \text{Width} \)[/tex]
Dividing both sides by 8, we find:
[tex]\( \text{Width} = \frac{720}{8} = 90 \)[/tex]
Therefore, the width of a rectangle with a length of 72 is 90 inches.
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What is the volume of a triangle prism 9cm 8cm 9cm
Answer:
324 cm^3
Step-by-step explanation:
Because this is a triangular prism, we can take the base area times the height. The base area is 9*8/2=36.
The height is 9.
So 36*9=324.
Answer:
324 cm³
Step-by-step explanation:
Area of triangle = 1/2 × base × height
Area of triangle = 1/2 × 9 cm × 8 cm
Area of triangle = 36 cm²
The height of the triangular prism is given as 9 cm.
To find the volume of the triangular prism, we multiply the area of the base triangle by the height of the prism:
Volume of triangular prism = area of base × height
Volume of triangular prism = 36 cm² × 9 cm
Volume of triangular prism = 324 cm³
Therefore, the volume of the triangular prism is 324 cubic centimeters (cm³).
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The absolute maximum and minimum values obtained from the graph of the functions are;
Absolute maximum of g; [1, 4]
Absolute minimum of g; [4, -3]
Absolute maximum h; [4, 3]
Absolute minimum of h; (-4, -5)
What is the absolute maximum and minimum of a function?The absolute maximum and minimum of a function are the coordinates of the highest and lowest points on the graph of the function, within the specified domain.
The points on the graph of the functions indicates that the maximum and minimum values of the functions are;
Graph of g; Absolute maximum of g = (1, 4)
Absolute minimum of g ; [4, -3]
Graph of h
Absolute maximum of h; [4, 3]
Absolute minimum of h; (-4, -5)
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How do we know where to label base and where to label height on a trapezium. does it matter where they are on the trapezium or does it have to be in rectangular please help on question
The labeling of bases and height in a trapezium is not fixed and can vary based on the context or problem. It doesn't matter where they are on the trapezium, as long as they are clearly defined and consistent within the given situation.
In a trapezium (or trapezoid), the labeling of the bases and height is not fixed or standardized. It can vary depending on the context or the specific problem being considered. However, there are a few general guidelines to keep in mind when labeling a trapezium.
Bases: The trapezium has two parallel sides, often referred to as the "top base" and the "bottom base." The bases are usually labeled based on their relative lengths or position in the trapezium. The longer parallel side is commonly referred to as the "top base," while the shorter parallel side is referred to as the "bottom base." However, this is not a strict rule and can vary depending on the problem or preference.
Height: The height of a trapezium is the perpendicular distance between the bases. It is generally labeled as a vertical line segment connecting the bases. The placement of the height is not fixed, and it can be drawn from any point on the top base to any point on the bottom base, as long as it forms a perpendicular line. The height is usually labeled with the symbol "h" or sometimes "x" or "y" depending on the context.
It's important to note that the labeling of the bases and height is primarily for communication and clarity. As long as the labeling is consistent and clearly defined within the given problem or context, it does not have to conform to any specific arrangement or be in a rectangular shape. The key is to ensure that the labels are clearly understood and can be used to calculate the desired quantities or solve the problem at hand.
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Can someone help me with this question?
Answer: - 27
Step-by-step explanation:
Plug in for x = 3 and y = -6
I'll start with x to make it easier.
Plugging in x =3
[tex]\sqrt{x^4}[/tex]
Means that first we find x^4, and take the square root of that result.
1. Find x^4
x = 3
3^4 = 3 * 3 * 3 *3 = 81
2. Take the square root of x^4
Square root of 81 = 9
So [tex]\sqrt{x^4}[/tex] = 9
Plugging in y = -6
Let's move onto plugging in y, which appears in the expression as y²
y = -6
so y² = -6 * -6 = 36
Putting this together into the expression
[tex]\sqrt{x^4}[/tex] - y²
9 - 36 = -27
The wholesale price for a chair is $114 A certain furniture store marks up the wholesale price by 33% Find the price of the chair in the furniture store. Round your answer to the nearest cent, as necessary.
Answer:
Step-by-step explanation:
144*33/
1,020.50375 rounded to the nearest tenth
Rounding the given value to the nearest tenth would be 1020.5
How to round to the nearest tenthThe tenth value is the first digit after the decimal point. Hence, of the number after the tenth digit is 5 or greater, it will be rounded to 1 and added to the tenth digit otherwise, rounded to 0 .
Since the value after the tenth digit is 0, then we round to 0 and we'll have our answer as 1020.5.
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The median weekly income for a student who drops out of high school is 451. Someone with a bachelor's degree from college earns 1053 in that same week. Calculate each person's yearly income and then the difference between them.
The difference between their yearly incomes is $31,304.
To calculate each person's yearly income, we need to multiply their weekly income by the number of weeks in a year. Assuming there are 52 weeks in a year, the yearly income can be calculated as follows:
For the student who drops out of high school:
Yearly Income = Weekly Income x Number of Weeks
= 451 x 52
= 23,452
For someone with a bachelor's degree:
Yearly Income = Weekly Income x Number of Weeks
= 1053 x 52
= 54,756
The difference between their yearly incomes can be found by subtracting the student's yearly income from the bachelor's degree holder's yearly income:
Difference = Bachelor's Yearly Income - Student's Yearly Income
= 54,756 - 23,452
= 31,304
Therefore, the difference between their yearly incomes is $31,304.
It is important to note that these calculations are based on the given information and assumptions. The actual yearly incomes may vary depending on factors such as work hours, additional income sources, deductions, and other financial considerations.
Additionally, it is worth considering that educational attainment is just one factor that can influence income, and there are other variables such as experience, job type, and market conditions that may also impact individuals' earnings.
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