Help this for my little brother lol

a. 18

b. 17/36

d. 157.5615

e. 19.8

Step-by-step explanation:

Hope this helped!

a. 18 b. 15/64 c. 122 2/9 d. 157.5615 e. 19.8

Step-by-step explanation:

a.

b. multiply across, so 1 * 15 = 15, 4*16=64, 15/64 can't be reduced, so done

c. 13 3/4 * 7 8/9, you must convert to improper fractions to multiply

4*13+3 = 55 so the first part is 55/4, 7*9+8=80 so the second is 80/9

55/4 * 80/9 = (55*80) / (4*9) = 4400 / 36, both are divisible by 4 so can be reduced to 1100/9 which cannot be reduced any further, 1100 + 9 = 122 R 2 so

1100/9 = 122 2/9

d. used calculator

e. 33% of 60 = (33//100)*(60/1) = (33*60) / (100*1) = 1980 / 100 = 19.8