Explain why in adding and subtracting scientific notation, you need the same power of 10 whereas in multiplying and dividing scientific notation, you can have two different powers of 10.

ok

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°

49%

step-by-step explanation:

when you realize that you dont know just realize i just took a test and im so smart

(x) - (y) = (1 + 4i)