Write and solve an equation to determine the value of x in each diagram

40

Step-by-step explanation:

x plus2x plus6=126

3x=126-6

3x=120

x=120/3

x=40

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.

the answer would be 484

step-by-step explanation:

just multiply 0.484 times 1,000 (formula)