Question

How do i finish this

Answer 1

Hi there!

To start off, you should not use this equation because it is incorrect to use for this problem.

Here's how you should solve it:

The base angles of an isosceles triangle is always equal. That means angle S also has a measure of 2x+2.

Now, add up all the angles.

(2x + 2) + (2x + 2) + (3x + 1) = 180

This is the proper equation. Now, open the parenthesis and combine like terms.

7x + 5 = 180

Now, subtract both sides by 5

7x = 175

Now, divide both sides by 7.

x = 25

To solve for angle R, plug in x=25 into 3x+1

3(25) + 1

= 76

The measure of angle R is 76 degrees.

Have an awesome day! :)