Question

need of geometry help pls :)

Answer 1

Here's how to do Module 2.5:

Small length x (whole length) = Small length x (whole length)

Here's (a) just to show you an application)

2.5(2.5 + x) = 4 x 9
6.25 + 2.5x = 36
2.5x = 29.75
x = 11.9