What is m∠a? enter your answer in the box. m∠a =

The three inside angles of a triangle equal 180 degrees.

All the 3 given angles together to equal 180 to solve for x, then calculate angle A.

x + (x-8) +(3x+13) = 180

Simplify the left side by combing like terms:

5x +5 = 180

Subtract 5 from each side:

5x = 175

Divide both sides by 5:

x = 175/5

x = 35

Now x is known, replace x in the equation for angle A:

3x+13 =

3(35) +13 =

105+13 = 118

Angle A = 118 degrees.

d is the correct answer

step-by-step explanation:

x= 8 because 3x = 3 * 8, and 3*8 = 24

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,