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spin [16.1K]
3 years ago
5

A polygon has the following coordinates: A(-5,2), B(-2,-2), C(2,3), D(6,3), E(6,-5), F(-5,-5). Find the length of EF.

Mathematics
1 answer:
Sophie [7]3 years ago
8 0

Answer:

C

Step-by-step explanation:

got it right on edg

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Doctors are interested in seeing if lifting weights to alleviate back pain is effective. Twenty five volunteers are asked to ran
goldenfox [79]

Answer:

Comparing means from dependent samples.

Step-by-step explanation:

In the scenario described above, the 25 sampled individuals were used to test the effect of weightlifting on alleviating back pain. The samples used were not changed nor altered during the study as the same subjects who were tested to measure their level of pain before lifting weight were the same group subjected to the actual weight lifting test and again had their level of pain tested. Since only one group was involved in the study ( a single group was tested on neutral and actual treatment). Hence, the study used dependent samples to compare the average level of pain.

4 0
3 years ago
At the ball game, 65% of the fans waved pom-poms. If 133 fans did not wave pom-poms, how many fans were there in all?
arsen [322]

Answer: 380

Step-by-step explanation: Create an equation, so if 65% waved then 35% of the total (x) didn't wave, which are 133 people, so .35x=133, solve for x so x=133/.35 so x=380

3 0
3 years ago
There’s a garden in the neighborhood, and the number of bushes in the garden can be determined by the equation B = 2s, where B i
wariber [46]
The answer would be 20s since B = 2s and there are 10 bushes. You would have to multiply 10 by 20
7 0
1 year ago
What are the solutions of 2x + 3) &gt; 4 ?<br> Please show work.
xz_007 [3.2K]

Answer:

Step-by-step explanation:

equation:

3 + x = 7

will be false if any number except 4 is substituted for the variable. The value of the variable for which the equation is true (4 in this example) is called the solution of the equation. We can determine whether or not a given number is a solution of a given equation by substituting the number in place of the variable and determining the truth or falsity of the result.

Example 1 Determine if the value 3 is a solution of the equation

4x - 2 = 3x + 1

Solution We substitute the value 3 for x in the equation and see if the left-hand member equals the right-hand member.

4(3) - 2 = 3(3) + 1

12 - 2 = 9 + 1

10 = 10

Ans. 3 is a solution.

The first-degree equations that we consider in this chapter have at most one solution. The solutions to many such equations can be determined by inspection.

Example 2 Find the solution of each equation by inspection.

a. x + 5 = 12

b. 4 · x = -20

Solutions a. 7 is the solution since 7 + 5 = 12.

b. -5 is the solution since 4(-5) = -20.

5 0
2 years ago
Delia is a graphic designer who charges an hourly rate. She made the graph to show her total earnings for various numbers of hou
stich3 [128]

Answer:

approximately 7 hours

see the explanation

Step-by-step explanation:

The picture of the question in the attached figure

Let

x ----> the time worked in hours

y ----> the amount earning in dollars

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form k=\frac{y}{x} or y=kx

In a proportional relationship the constant of proportionality k is equal to the slope m of the line <u><em>and the line passes through the origin</em></u>

so

In this problem we have a proportional relationship

step 1

Find approximately how many hours would it take Delia to earn $250 ?

Looking at the graph

For y=$250 The value of x is approximately 7 hours

see the attached figure N 2

step 2

Find the exact value

from the graph take the point (5,175)

Find the value of k

k=\frac{y}{x} ----> k=\frac{175}{5}=\$35\ per\ hour

The linear equation is

y=35x

For y=$250

substitute

250=35x

solve for x

x=7.14\ hours

8 0
3 years ago
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