This is an isosceles triangle. Therefore, at the base we have congruent angles (look at the picture).
We have the equation:
(5x + 13)° + (3x + 7)° = 180°
5x + 13 + 3x + 7 = 180 <em>combine like terms</em>
(5x + 3x) + (13 + 7) = 180
8x + 20 = 180 <em>subtract 20 from both sides</em>
8x = 160 <em>divide both sides by 8</em>
<h3>x = 20</h3>
A) 60mph
B) 209.7 miles
C) 2 hours and 45 minutes
3a^2 B^3 C^-2 OVER a^-3 b^6 c^3
She started with 81 baseball cards.
Angle 3 and 5 are alternate interior angles, please mark me Brainliest!