the perimeter of a trapezoid is 39a-7. Three sides have the following lengths: 9a, 5a-1, and 17a-6. What is the length of the fo

Question

k0ka [10]

3 years ago

10

the perimeter of a trapezoid is 39a-7. Three sides have the following lengths: 9a, 5a-1, and 17a-6. What is the length of the fo

urth side

Mathematics

1 answer:

rosijanka [135] · Answer 1 · 2022-02-21T06:49:38+03:00

rosijanka [135]3 years ago

8 0

Since there are 4 sides, the total minus the 3 other sides gives you the 4th side. 39a-7-9a is 30a-7, 30a-7-(5a-1)=30a-7-5a+1 (using the distributive property) =25a-6, 25a-6-(17a-6)=8a