There are all parallelograms.
To find their area we need to use only one formula.
A=base*height
Everything is given, so
1) A=b*h=5.3*4=21.2 km²
2) A=b*h= 11*10.7= 117.7 mi²
3) A=b*h= 10.5*7.9 =82.95 mi²
Answer:
what's the graph?
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
Basic Algebra, isolate V.
Do the opposite equation to get V on its own.
Because it is V/8, multiply both sides by 8 to get 8 on its own (if you wanted to move v over you would divide)
Answer:
a
Step-by-step explanation:
A theorem cannot be proven.
Answer:
D) 239
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 and n is the size of the sample.
Required sample size:
Is n
n is found when
We have that
So
Simplifying by 6
We round up, and the answer is 239.