Solve the system of equation
y =5x −3
y =3x+1

x=2, y=7

Step-by-step explanation:

First label the 2 equations.

y= 5x -3 (1)

y= 3x +1 (2)

susbt. (1) into (2):

5x-3= 3x+1

5x-3x= 3+1 (bring x terms to 1 side, constant to the other)

2x= 4 (simplify)

x= 4÷2

x= 2

subst. x=2 into (2):

y= 3(2) +1

y= 6+1 (expand)

y= 7

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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°