38) what is 2 1 4 · 9 5 ?
a) 1 1/4
b) 1 5/12
c) 3 17/20
d) 4 1 /20

D.) 4 1/20

Step-by-step explanation:

2 1/4 * 9/5

Change 2 1/4 to an improper fraction

4*2+1 = 9/4

9/4 * 9/5

Multiply straight across the numerators and then straight across the denominators

9 * 9 = 81   4 * 5 = 20

81/20

Change this back into a mixed number

81 divided by 20 = 4 1/20

b 41/20 because it makes most sense

1260=3*6*7*10=3^2*2^2*7*5 perfect cude = 3^3*2^

step-by-step explanation: