Answer:
Step-by-step explanation:
You need to paint a decorative garden ornament that is in the shape of pyramid with a square base that is 3 inches long and has a slant height of 13 inches.
a. A smaller pyramid has linear dimensions that are 3/4 times that of the larger pyramid. Does the smaller pyramid require 3/4 times the amount of paint? Explain: Answer: Yes
b. Another pyramid has triple the base lengths but the same slant height. Does this pyramid require triple the paint as the original pyramid? Explain. Answer: No
Answer:
A sample size of 385 is needed.
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
That is z with a pvalue of 
, so Z = 1.96.
Now, find the margin of error M as such
In which 
is the standard deviation of the population and n is the size of the sample.
You feel that a reasonable estimate of the standard deviation is 10.0 hours.
This means that 
What sample size is needed so that the expected margin of error of your estimate is not larger than one hour for 95% confidence?
A sample size of n is needed. n is found when M = 1. So
Rounding up:
A sample size of 385 is needed.
Answer:
x = -3/2 = -1.500
x = 7/3 = 2.333
Step-by-step explanation:
The answer is 120 * sqrt of 2
3 * sqrt of 50 * 8 = 24 * sqrt of 50
24 * sqrt of 50 simplifies to 120 * sqrt of 2
Answer:
x9-7
Step-by-step explanation:
