Which equation can be used to find 60 percent of 50? 60x2 120
50 x 2 100
50+ 1
60+ 1
60
60-2
100+2
30
50
100x2 200
50 x 2 100

Which equation can be used to find 60 percent of 50?

60x2 120

50 x 2 100

50+ 1

60+ 1

60

60-2

100+2

30

50

100x2 200

50 x 2 100

(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

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!