Answer:
3x=12
Step-by-step explanation:
x=12/3 => x=4
You could add the whole number parts first then add the fractions. Finally add the 2 results.
First of all f(2)=2(2)-5=-1 and f(5)=2(5)-5=5
so
f(2)+f(3)=-1+5=4
Basically apply your radius and slant height to the formula to find the surface area of a cone which is S=3.14r^2+3.14rl
Answer:
A sample size of at least 737 specimens is required.
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 width M as such

In which
is the standard deviation of the population and n is the size of the sample.
In this problem, we have that:

So:





A sample size of at least 737 specimens is required.