Answer:
20-15z
Step-by-step explanation:
-1+21-15z
20-15z
- First, we find the <u>lowest common denominator</u> which is "14", we put it in the common numerator.
<h3><em><u>MissSpanish</u></em></h3>
<span>Step 1: Make sure the bottom numbers (the denominators) are the same.
Step 2: Add the top numbers (the numerators), put the answer over the denominator.<span>
Step 3: Simplify the fraction (if needed)</span></span>
Beginning with the function y = sin x, which would have range from -1 to 1 and period of 2pi:
Vertical compression of 1/2 compresses the range from -1/2 to 1/2
Phase shift of pi/2 to the left
Horizontal stretch to a period of 4pi, as the crests are at -4pi, 0, 4pi
Vertical shift of 1 unit up moves the range to 1/2 to 3/2
So the first choice looks like a good answer.
This requires us to find the number of permutations of 6 different bands taken 2 at a time:
