Write equation and solve for value of X (2 questions)
Fairly simple I just can’t seem to remember for finals thank you!

31) x = 25 degrees

Equation: (2x+15) + x + 90 = 180 degrees

--> 3x+105 = 180

> 3x = 75

> x = 25 degrees

32) x = 17 degrees

Equation: (x+52) + (3x+21) + 39 = 180 degrees

--> 4x+112 = 180

> 4x = 68

> x = 17 degrees

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.