Toru rode his bike from his house to the library, to the park, and then back home. Toru realized that his route made an isosceles triangle, and that the library was the exact same distance from both his house and the park. What is the measure of the angle at the library?

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

c. 6tan80

step-by-step explanation: