In a class of 24 students, 25 % recieved an 'A'. how many students did not recieve an A ?​

Step-by-step explanation:

100% is 24. divided by 2 giving you 50% which is 12. divided by another giving you 25% which is 6 so meaning you will subtract 6 out of 24 which is 18 so your answer is 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!