C
3(3a) = 9a
3(4) = 12
3(3a +4) = 9a +12
Answer:
She did not add 5 to 30. ... Mona subtracted 5 where she should have divided 5.
Step-by-step explanation:
Answer:
23/63
Step-by-step explanation:
1 and 2/3 can also be writen as 5/3
4 and 1/5 can also be written as 21/5
5/3 divided by 21/5 can be rewritten as 5/3 multiplied by 5/21
multiply the numerators (top numbers) for the numerator of the answer
5 x 5 = 25
multiply the denominators (bottom numbers) for the denominator of the answer
3 x 21 = 63
put the numerator and denominator together as the fraction 25/63
25 and 63 share no common factors, so the fraction cannot be further simplified
5h^3: 5 * h * h * h
20h^2: 2 * 2 * 5 * h * h
GCF(5h^3, 20h^2) = 5h^2
4h: 2 * 2 * h
16: 2 * 2 * 2 * 2
GCF(4h, 16) = 4
The answer is C.