Answer:
Rewriting
without an exponent we get 
Step-by-step explanation:
We need to rewrite the following without an exponent. 
We need to solve the exponent to find the result.
We know the exponent rule: 
Now using this rule to solve the equation:

So, Rewriting
without an exponent we get 
Answer:
Z =7
Step-by-step explanation:
The middle segment theorem of a triangle says that: A middle segment connecting two sides of a triangle is parallel to the third side and is half its length.
In this case, the middle segment connecting two sides of a triangle is Z.
This means that

Finally we have that:

The length of the middle segment is 7 units
The answer would be the first choice. 
Explanation: The reason for this is that the question was pretty much just asking what the area of the resulting two-dimensional cross section would be -the shape in gray- (which can be found by using the formula
. To add on, since the dimensions of the shape are already given (5 and 3) all you've to do is multiply: 3*5=15
That's how you get to the answer.
3:2
for every 3 ounces of flour, you need 2 ounces of sugar