Please help me idkkk know howww took dooo thisss

57 mm^2

Step-by-step explanation:

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1) Well, to find the area of the first, just split it into two rectangles.

Top rectangle's area=3*4=12

Bottom=9*5=45

45+12=57 mm^2

2) You would make it into a parallelogram and a trapezoid, as they suggest,

Trapezoid: you would do ((14+26)*10)/2=400/2=200 m^2

Parallelogram: 14*7=98 m^2

200m^2+98m^2=298 m^2

(っ◔◡◔)っ ♥ Hope this helped! Have a great day! :) ♥

Please, please give brainliest, it would be greatly appreciated, I only need one more before I advance, and this took a while to solve! Thanks so much!

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18