There are 3 times as many males as females on the maths course at university. what fraction of the course are male? give your answer in its simplest form.

Three Quarters (¾, 75%)

Step-by-step explanation:

Imagine there being five females on the math course. 5·3 equals 15 males. 5 females+15 males=20 people, therefore three quarters of the course are male and one quarter is female.

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

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