15. Which one is greater out of(2:3)
and (4:6)​

We can compare these 2 ratios as fractions. Therefore this problem can also be written as.

2/3=?=4/6

Now we can simplify

2/3=?=2/3

As we can see these 2 ratios are actually equal!

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!

chiken

step-by-step explanation: