Use the law of cosines to find the value of 2*4*5 cos theta
a. 20
b. 40
c. -40
d. 37
my answer is b

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

What’s -11-33k and factor each expression completely