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Tom [10]
2 years ago
6

George and Michelle each claimed to have the better recipe for chocolate chip cookies. They decided to conduct a study to determ

ine whose cookies were really better. They baked a batch of cookies using their own recipe. George asked a random sample of his friends to taste his cookies and to complete a questionnaire on their quality. Michelle asked a random sample of her friends to complete the same questionnaire. For her cookies. They than compared the results. Which of the following statements about this study is false?
A. Because George and Michelle have a different population for friends, their sampling procedure makes it difficult to compare the recipes
B. Because George and Michelle each used only their own respective recipes, their cooking ability is confounded with the recipe quality
C. Because George and Michelle each used only the ovens in their houses, the recipe quality is confounded with the characteristics of the oven
D. Because George and Michelle used the same questionnaire, their results will generalize to the combined population of their friends
E. Because George and Michelle each baked one batch, there is no replication of the cookie recipes
Mathematics
1 answer:
wlad13 [49]2 years ago
3 0
The answer is letter D
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Which of the following is parallel to the line 2x+4y=16
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Answer:

Option C: y=-1/2x + 8

Step-by-step explanation:

So we have the options:

A) y=2x+5

B) y=-1/2x+4

C)y=-1/2x+8

D)y=-2x+5

But first let's define what parallel even is. When two lines are parallel it means that there slope is the same value and the same sign, while there y-intercepts are different, because if they were the same, then they wouldn't be parallel, they would just be the same exact line.

So we're given the equation in standard form. To find the slope we can change it so it's in the form of y=mx+b. This can be done by simply isolating y. The reason we want it in the slope-intercept form is because m represents the slope and b represents the y-intercept. m is the slope because as x increases by 1 the y-value will increase by m. So the "rise" will be m and the "run" will be 1, thus the slope will be m/1 or in other words m because the slope is defined as rise/run. So let's start the steps to isolating y

Original equation

2x+4y=16

Subtract 2x from both sides

4y=-2x+16

Divide both sides by 4

y = -1/2x + 4

Here we have it in slope-intercept form. In this case the slope, or m, is -1/2 and the y-intercept or b is 4. So now let's look at the other equations.

Option A: This equation has a slope of 2, which is not the same as -1/2 so it is not parallel

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