Solve for x: 5-1/2x=-10a. x=30b. x=-30c. x=1/30d. x=-1/30

The answer is b

5-1/2x=-10

5-5-1/2x=-10-5

-1/2x=-15

-1/2x*2/1=-15*2/1

x=-30

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°