Help with algebra 2 Problem. Please show all work?

Question

Please show all steps and work i am very confused thx in advance.. heres the problem....person who shows good amt. of work and correct answer gets the pnts.

If the length and width of Rectangle A are 10 percent less and 30 percent less, respectively, than the length and width of Rectangle B, the area of A is what Percent smaller than the area of B. Thank you

Answer 1

B=lw
A=.9l .7w = .63 lw

A is 63 % the area that B is

Answer 2

Let the length and width of rectangle B be l and w.
Then area of rectangle B = l w.
For the rectangle A the length is 0.9 l and the width is 0.7 w
Then area of rectangle A = 0.9 l* 0.7 w. =0.63 l w
So the area of A / the area of B = 0.63 = 63%.
So the area of rectangle A is 37 % less than than that of B.

Answer 3

let the length of rect B be x and the width y
therefore, the area is xy
rect A has .9x as its length (90% of x, 10% less) and .7y
therefore the area is .63xy

area of A is 63% of the area of B
rectangle A is (100-63)% smaller than B: 37%

Answer 4

The area of A is 37% smaller than the area of B.
---------
Reasons:
(0.9)(0.7) = 0.63, A is 63% of B.
1-0.63 = 0.37, A is 37% less than B

Answer 5

55x - 3(9x + 12)= -sixty 4 shop on with your order of operations, commence with the parenthesis. /--------- 55x - 3(9x + 12)= -sixty 4 -3(9x +12) = -27x + (-36) Make a clean equation. 55x -27x +(-36) = -sixty 4 Subtract your X values. 28X + (-36) = -sixty 4 upload 36 to the two factors (you're including because of the fact the quantity is unfavorable) 28x = -28 Divide by way of 28 on the two factors. x = -a million As for the triangle one...I haven't any thought sorry. desire this facilitates nevertheless!