What is 7.75×10-1 in standard notation

Shane can shovel the driveway in 4 hours, but if his sister it would take 2 hours. how long would it take taylor to shovel the driveway alone

Acourt reporter is transcribing an accident report from germany. the report states that the driver was traveling 80 kilometers per hour. how many miles per hour was the driver traveling?

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*