Which of the following equations correctly represnt the law of cosines?

A. b2 = a2 + b2 - 2ab ⋅ cos (C)

B. c2 = a2 + b2 - 2ab ⋅ cos (B)

C. b2 = a2 + c2 - 2ac ⋅ cos (B)

D. a2 = b2 + c2 - 2ac ⋅ cos (A)

Estimate the sum of 21+17.

Your local grocery has your favorite juice on sale buy one, get one half off. each carton costs $3.20. how many can you buy for $20? write a java program to do tha

A rectangular pyramid has a base that measures 8 inches by 10 inches, ql a height of 12 inches, and a slant height of 15 inches. Elena calculated the volume of the pyramid as shown.

Select the property that allows the left member of the equation to be changed to the right member. a (b + c) = ab + ac

5x + 2y = 7 y = x + 1 What is the solution set of the given system?

A rhino can run at speeds of about 28 miles per hour. What is that speed in feet per second, to the neasrt whole number?

Meredith picked 4 times as many green peppers as red peppers. If she picked a total of 20 peppers, how many green peppers did she pick?

Find diameter and radius if c = 43m

A flower bed has the shape of a rectangle 7 yards long and 4 yards wide. what is its area in square feet

A store buys 77 1 2 pounds of mulch in a large shipment. They divide the mulch up into bags that can each hold 2 1 4 pounds. The store sells one bag of mulch for $2.25. For each part of the question, show your work.