15
3 * 5 <== prime factorization
Answer:
Step-by-step explanation:b
Answer:
none of the answers listed are equivalent to b (22/5, 11/8, 2/5, 1/4)
Step-by-step explanation:

to simplify, cross multiply
(1 · 5 = 3b · 4)
(5 = 12b)
divide both sides by 12 to isolate b,


None of the answers listed are equivalent to 5/12








Answer:
B. 90
Step-by-step explanation:
Since the two angles are supplementary, this means they both are on a flat line (180 degrees)
Since both A and B add up to 180, we take that number and subtract A (90) to get our answer: 90 degrees