Tell whether the lines for each pair of equations are parallel, perpendicular, or neither
y= -3x + 7 -2x+6y=3

Perpendicular lines

Step-by-step explanation:

We are given that

We have to find the pair of equations are parallel , perpendicular or neither.

Differentiate each equation w.r.t.x

Using rule :

When two lines are perpendicular then ,

When two lines are parallel then, slope of two lines are equal.

We have

Hence, the lines are perpendicular.

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°

answer: 72: 111

step-by-step explanation: