Solve Diego's equation: x + 35 =180 x =

x=145

Step-by-step explanation:

simply subtract 35 from both sides, so you can isolate the variable. once done, you will get that x=145

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315