In which pair is the value of Expression A two times the value of Expression B? A.
Expression A: 3 × (55 + 21)
Expression B: 3 × (22 1/2 + 21)

B.
Expression A: (75 + 23)
Expression B: (75 + 23) × 2

C.
Expression A: (44 + 32) × 8
Expression B: (44 + 32) × 4

D.
Expression A: (3 × 55) + 42
Expression B: (3 × 55) + 21

In the 30-60-90 triangle below side s has a length of and side r has a length

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

The diagram shows corresponding lengths in two similar figures. find the area of the smaller figure. a. 14.4 yd2 b. 24 yd2 c. 26.4 yd2 d. 28