She asked her friends, which does not represent a random sample.
She tried to show cause and effect without doing an experiment (which includes simple random sample, control group, treatment, etc).
So the answer is she did not use a random sample, and tried to show cause and effect with an observational study.
Answer:
x = -6
Step-by-step explanation:
-x/3 = 2
Multiply each side by -3 to isolate x
-x/3 * -3= 2*-3
x = -6
Answer: 8.99mm
Step-by-step explanation:
a^2 + b^2 = c^2
31/2+3/4+3/4+4/4 or 1
7/2+3/4+3/4+4/4
14/4+3/4+3/4+4/4 =24/4=6
Ans = 6 cups
