Find the sum. (3a2 + 2ab + 2b) + (5a2 − 3ab + 9)

1. during first 10 seconds 2. between 10 seconds and 35 seconds 3. during 35 seconds to 40 seconds

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Use δjkl and δmpn to determine whether don's claim is true or false. which of the following should don use to prove the triangles are similar? sss sas aas aa