Simplify and find value. b 3 1 2 xy2−2 4 5 x2y−2 1 2 y2x+2 4 5 x2y, if x=1 , y=−2 QUICK

step-by-step explanation:

step-by-step explanation:

you divide the denominator by the numerator on both sides and if the quotients are equal then the fractions are equivalent

51-50

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°