-79=7w+3(4w-1) help quick with steps

-4=w

Step-by-step explanation:

-79=7w+12w-3

-79=19w-3

-79+3=19w-3+3

-76=19w

-76÷19=19w÷19

-4=w

w = -4.

Step-by-step explanation:

-79 = 7w + 3(4w - 1)

7w + 12w - 3 = -79

19w = -76

w = -4.

trapezoid

step-by-step explanation:

first i plotted all my points on a grid graph

i made sure all of them were in the correct quadrant

then i saw it was a trapezoid or a quadrilateral

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.