PLEASE HELP 5 EIGHTH GRADE ALGEBRA MATH PROBLEMS

1.
x=2y
-9x+4y=28

2.
y=-4x+5
8x-2y=-42

3.
3x+7y=-17
-3x+9y=-15

4.
6x+12y=36
4x-6y=-4

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363

55% are girls and 45% are boys : ) hope this

step-by-step explanation:

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb