Percent change from 5000 to 6400?

28 percent

Step-by-step explanation:

Hope this helps!

5000 is the old value and 6400 is the new value. In this case we have a positive change (increase) of 28 percent because the new value is greater than the old value.

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°