It took mary 1.5 hours to bicycle 39km. then she slowed down and took another 3 hours to bicycle 51 km more. find her average speed for the trip.
(total 8 points; 4 points for the answer, 2 points for the units labeled and 2 points for work shown or explanation)

1. what is the measure of ∠abc? what is the measure of ∠abd?

The circumference of a redwood tree trunk is 20π ft, and it is 100 ft tall. what is the approximate volume of the redwood tree trunk? 1,000π ft3 10,000π ft3 4,000π ft3 40,000π ft3

With this question substitute t=3 and t=5 to determine if the two expressions are equivalent. 4(t + 3) 4t+12 which statements are true? check all that apply. a. the value of both expressions when t =5 is 32. b. the two expressions are not equivalent. c. the value of both expressions when t=3 is 15. d. the value of both expressions when t=5 is 23. e. the two expressions are equivalent. f. the value of both expressions when t=3 is 24.