The area of a square mirror is 256 in^2. a rectangular mirror has a width the same as the square mirror's width. it's length is two inches longer than its width. what is the area of the rectangular mirror?

To find the side length of the square, we can take the square root of the area:

So if the rectangular mirror has a width the same as the square, the width will be 16in.

If the length is two inches longer than the width, the length will be 18 in.

So to find the area, we must multiply them:

So now we know that the area of this rectangular mirror is 284 sq. inches.

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!

the answer is a.

step-by-step explanation:

in three games of golf, alex shot two under par four times.