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Anna [14]
3 years ago
7

Question...Sleep is known to affect student grades. Kirsten is conducting a study in a local high school using two treatments on

two groups of students. One group will nap one hour in an eight-hour school day and another will nap 30 minutes in an eight-hour school day. What group would be the best control for the study?
Options...
A third group that takes a one-hour nap or a 30-minute nap randomly each day

A third group that shortens the school day to six hours

A third group in which no naps occur

A third group that splits the day with a 30-minute nap in the morning and a 30-minute nap in the afternoon

A third group in which each student chooses either a 30-minute nap or a one-hour nap
Mathematics
1 answer:
OLga [1]3 years ago
4 0

Answer:

c

Step-by-step explanation:

a third party group in which no naps occur

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Find the slope and write an equation of the line which passes through the points. (−3, 9) and (−3, −5)
Sedbober [7]

Answer:

Slope: undefined

Equation: x=-3

Step-by-step explanation:

To find the line that passes through the points, you first want to find the slope.  The formula for slope is m=\frac{y_2-y_1}{x_2-x_1}. Once we have the slope, we can use any given point to plug in to find the y-intercept.

m=\frac{-5-9}{-3-(-3)} =\frac{-14}{0}

We can see that the slope is undefined. If we look at the point, we notice that they both have the same x-coordinate. This let's us know that the equation is x=-3.

4 0
3 years ago
Someone help me with this ASAP
faltersainse [42]
I’m learning this to lol I think the answer is c because the absolute value is always positive right ? And the opposite of -0.89 would be positive 0.89 !
8 0
3 years ago
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find three numbers whose sum is 32 if the second is 1 more than the first and the first is 4 less than the third
Alex777 [14]
X+y+z=32
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3x+5=32
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Hope this helps :)
7 0
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I'm really stuck on this:/
JulsSmile [24]

Answer:

9.2

Step-by-step explanation:

put the 4 in for the c. it becomes 16. then subtract

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A rectangle has dimensions of 15 centimeters long and 16 meters wide what is the area of the rectangle
Brrunno [24]
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