Answer:
10 minutes?
Step-by-step explanation:
Sorry if it is incorrect but what I did was I found the average of 5 minutes and 15 minutes and got 10.
Here's my problem solving explanation:
(5 + 15) / 2 = 10
Use surface area equation 2ab+2bc+2ac plug the numbers in
Answer:
The correct option is D
66°
Step-by-step explanation:
Given that ∠PTQ ≅ ∠RTS
The measure of the arc SR = 66°
So ∠RTS = 66°
But also, ∠PTQ ≅ ∠RTS
Therefore ∠PTQ = 66°
and the measure of the arc PQ = ∠PTQ
Therefore, measure of the arc PQ is 66°.

Given:
population mean, μ =135
population standard deviation, σ = 15
sample size, n = 19
Assume a large population, say > 100,
we can reasonably assume a normal distribution, and a relatively small sample.
The use of the generally simpler formula is justified.
Estimate of sample mean

Estimate of sample standard deviation


to 5 decimal places.
Thus, using the normal probability table,





Therefore
The probability that the mean weight is between 125 and 130 lbs
P(125<X<130)=0.0731166-0.0018308
=
0.0712858