Suppose c and d represent two different school populations where c > d and c and d must be greater than 0. which of the following expressions is the largest? explain why. show all work necessary. a: (c + d)2 b: 2(c + d) c: c2 + d2 d: c2 − d2

A.

Step-by-step explanation:

We have that C>0, D>o and C > D. Now,

A.

B. 2(C+D) = 2C+2D

C.

D.

We have that (beacuse on left we have adding one extra positive term) and also (adding two positive values is greater than subtract two positive values), then

also, (also because the middle term). Then, the largest term is  .

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.