Need help asap and show work thankq!

Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

Tom drove 206 miles in 3.9 hours. estimate his average speed.