Answer:
3(x + 6) = 30
<em>Hope that helps! :)</em>
Step-by-step explanation:
The correct answer is C. Domain
First it would be 42/6 and 48/6
So the first flag would be 7 feet and the second would be 8 feet long
Answer:
A sample size of 128 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 .
So it is z with a pvalue of , so
Now, find the margin of error M as such
In which is the standard deviation of the population(square root of the variance) and n is the size of the sample.
How large should a sample be if the margin of error is 1 minute for a 93% confidence interval
We need a sample size of n, which is found when . We have that . So
Rounding up
A sample size of 128 is needed.
Hello,
(x+2)(x+3)(x+5)=(x+2)(x-3)(x+5)
==>(x+2)(x+5)(x+3-(x-3))=0
==>(x+2)(x+5)*6=0
==>x=-2 or x=-5