Answer: The number is 192
Step-by-step explanation:
Answer: 0.84134
Step-by-step explanation:
We need to find the z-score for the given information first since this will help us find the probability. The formula for this is
Z score = 
We have
66 inches (the raw score)
70 inches (the population mean)
= 4 inches (the standard deviation)
This gives
Z score =
= 
If you use a calculator, or a Z-score table then P(x > Z) is just P(Z > -1) which gives a probability of 0.84134.
Answer:
x=-3
Step-by-step explanation:
You need to delete the root by ^2. First you need to leave it alone

25 = e^k (0.15)
e^k = 25/0.15
k = Ln(25/0.15) ≈ 5.116
-2/3 is the slope of the line