Helppp I’ll mark brainliest

a

Step-by-step explanation:

keep change flip so 9/10 x 5/2 =45/20 and simplified is 2 1/4

A. because 9×5 =45 and 10×2=20 =45/20 we simplify and 9/4 and still simplify then 2 1/4 is the answer

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18

step-by-step explanation:

answers available in this download

(pearson%2c%25202012)%2520bbs.pdf& usg=aovvaw1obmtxnfghfgxhx0urh_je