5 x + 8 = x − 9?
Simplify. (−2 x
4
)
3
(−2x
2
)
2

Step-by-step explanation:

5x + 8 = x - 9

5x - x = - 9 - 8

4x = - 17

x = - 4 1/4

Can you explain the other stuff you wrote down so I can help? Can you put the stuff on a line so I can understand?

just do 5.2 + 2 ( 7.2) and 1/3 x 3 (.9) and youv'e got your equation. 0.9( 9/10) + 7.2 ^2 = 16.4 hope i could !

step-by-step explanation:

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.