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MArishka [77]
2 years ago
15

A principal wants to find out how many hours per week the students in the school spend

Mathematics
1 answer:
malfutka [58]2 years ago
3 0
I think B (Every fifth student from each grade)

A only talks about female students, C talks about students on a sports team which would be biased since the students on the sports team probably get more exercise, and d would be ok but not the best since some last names are more common and others you would get only a very small sample size.
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<img src="https://tex.z-dn.net/?f=4%20%5Cfrac%7B1%7D%7B2%7D%20x%20%5Cfrac%7B2%7D%7B3%7D%20" id="TexFormula1" title="4 \frac{1}{2
aleksley [76]

Answer:

Step-by-step explanation:

4\frac{1}{2}* \frac{2}{3} =\frac{9}{2} *\frac{2}{3} =3

8 0
3 years ago
1. What values of a, b, and c would you use in the quadratic formula for the following equation?
kiruha [24]
Answer: See each part below.

1) A, B, and C are the coefficients in order when it equals 0. Move over the 4 and you have 5, 9, -4 or Choice B.

3) If you graph the equation, it will be above the x-axis. Therefore, it has no roots. Choice D

4) Choice A is correct. Use the coefficients: A = 4, B = 3, C = -10. Simply plug those into the quadratic equation and you will get -2 and 1.25.
7 0
3 years ago
PLZ HELP SOON
marysya [2.9K]
12.5%. there is a 1 in 8 chance that all three times it will land on heads.
5 0
3 years ago
Read 2 more answers
Rohan and Amit can build a tank in 12 days while Amit and Sohan in 15 days and Rohan and Sohan in 20 days. How long would each t
kolezko [41]

Answer:

Rohan-6

amit-6

sohan-9

Step-by-step explanation:

12/2=6 rohan And amit

amit=6 so solan has to take 9

10

4 0
2 years ago
Complete the statements about the shapes in the graph.
TEA [102]

Shape A is congruent to shape  D because a 180° rotation about the origin and then a translation  2 units right maps shape A onto it.

Shape B is congruent to shape  E because a 90° clockwise rotation about the origin and then a translation  1 unit left maps shape B onto it.

4 0
3 years ago
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