Find the sum of the three expressions and choose the correct answer. -2u3v + 5uv - 1 7u3v - 2u2v2 5u2v2 - uv + 6 A)5 u^3v + 3 u^2v^2 + 4 uv + 5 B)5 u^3v - 3 u^2v^2 + 4 uv - 5 C)-5 u^3v - 3 u^2v^2 + 4 uv + 7

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°

∈3,600

step-by-step explanation:

step-by-step explanation:

given that ab is divided into equal parts as

ac, cd, de, ef, fg, gh, hi, ib.

from this we find that f is the midpoint of ab.

so using mid point formula we find

f = (3,7)

similarly considering fb, we get

h = mid point of fb = ((6,6) and g, mid point of fh is

g = (9/2, 13/2)

i is mid point of hb

so i =(15/2,11/2)