Factorize a^2–b^2 Hence find the exact value of 2557^2-2547^2

Given: △acm, m∠c=90°, cp ⊥ am , ac: cm=3: 4, mp-ap=1. find am.

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?

You buy a veido game for $60 and the sales tax is 8% what is the total cost for the game including the sales tax