Answer: 
Step-by-step explanation:
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The exercise is: " Evaluate
when
and 
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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:
Keisha has 1/8th of the sandwich that she brings back.
Step-by-step explanation:
To start, take a whole sandwich and subtract the 1/2 she left at home and the 3/8 that her family ate.
1 - 1/2 - 3/8 = Leftover
We also need to give them common denominators to complete the action.
8/8 - 4/8 - 3/8 = Leftover
1/8 = Leftover
What’s the figure I couldn’t see anything here.
Answer:
see below
Step-by-step explanation:
Because the area of the square is 36 its side is 6 meaning the circle has a diameter of 6. This means that its radius is 3 so its area is 3² * π = 9π.