Answer: 
Step-by-step explanation:
<h3>
The exercise is: " Evaluate
when
and 
</h3>
Given the following expression:

You can follow these steps in order to evaluate it:
1. Substitute
and
into the expression provided in the exercise:

2. Solve the multiplications. Remember that:

Then:

3. Reduce the fraction. Notice that the numerator 6 and the denomiantor 4 can be both divided by 2. Then:

4. Solve the addition:

Since the number 21 has a denominator 1, the Least Common Denominator is:

Then, the sum is:

Answer:
c = 25
Step-by-step explanation:
A^2 + B^2 = C^2.
25^2 + 15^2 = 625 THIS IS NOT THE ANSWER BECAUSE WE WANT C NOT C^2!!! So, we have to find the square root. √625 = 25.
Answer:
3
Step-by-step explanation:
slope is 3/1 which is just 3
Answer:
1 chocolate will cost about $0.73
Explanation:
You'd have to fine the unit rate. To do so you divide the cost,$11, by the number of chocolates,15 .
Answer:
16
Step-by-step explanation: