(4x+13) What is the value of x in this problem?

Umm the value of X is 4.. the problem ends here at 4x + 13 un less if their was like an equal sign like 4x+ 13 =9..

But more in depth way you can say x = 1

But still X = 4

answer are

step-by-step explanation:

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°