7) shawna made a trip to the recycling plant
and back. the trip there took five hours
and the trip back took two hours. she
averaged 45 mph faster on the return trip
than on the outbound trip. what was
shawna's average speed on the outbound
trip?

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

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units