Question

HELP !!

Elena and Diego each wrote equations to represent these diagrams. For each diagram decide which equation you agree with, and solve it. You can assume that angles that look like right angles are indeed right angles.

Elena: X=35
Diego: X+35=180

Answer 1

Answer: Diego is correct, and X = 145

Explanation:

The line that 35* and x* rest on must equal 180*. Elena cannot be right if we assume this, as 35 + 35 = 70. We must then move onto Diego's formula.

`X + 35 = 180`

`180 - 35 = X`

`X = 145`

Solving this, we would subtract 35 from 180, leaving us with 145*. This must be correct as the solution would give us the total we need.