Answer:
B
Step-by-step explanation:
The answer is B (OB. Fifty people are put into a control group and nfty people are put into a test group. The control group is given a placebo and the
test group is given a new medication. Each group is asked about the side effects.) because an experiment requires a control group and a test group chosen at random.
Answer: 4
Step-by-step explanation:
7/4 - 5/3
(7/4)*(3/3) - (5/3)*(4/4)
(7*3)/(4*3) - (5*4)/(4*3)
21/12 - 20/12
= (21 - 20)/12 = 1/12
The correct answer is negative 14°, otherwise known as -14°.
Answer: 270 cubic centimeters
Step-by-step explanation:
bh/3 is the formula so...
because it's a right triangle we multiply the legs together:
9*12 = 108
and we divide by 2
108/2 = 54
height is 15
(15*54)/3 = 810/3 = 270
Our answer is 270 cubic centimeters.