For margin of error to be a maximum of 3:
3 = z*(SD / sqrt(n)), where z is the z-score, SD is the standard deviation and n is the sample size.
z = 1.96 for a 95% confidence interval, and we are given SD = 15.
3 = 1.96*15/sqrt(n)
sqrt(n) = 9.8
n = 96.04 ~ 96 commercials.
Theres a formula to find the midpoint it’s... (x1+x2)/2, (y1+y2)/2. You fill in the x’s and y’s to get (-5+7)/2 for x, which equals 1 and (4-5)/2 to get -0.5. (1, -0.5) is your answer
Ur just messing around arent u "همانا " is literally a different language ._.
Answer:
anything above 1
Step-by-step explanation:
-3/2 = -1.5.
3 x -2 = -6
Nope
3 x -1 = -3
Nope
3 x 1 = 3 Yes!!
