The post office charges $0.43 for stamps for 1-ounce letters and $0.29 for postcards. Which expression gives the total cost of stamps in dollars for r letters and p postcards? 0.431 - A. 299
B. 0.43r + 0.29p 0.72(r + p)
C. 0.72rp​

State if the two triangles are congruent. if they are, state how you know?

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 =

If the discriminant if a quadratic equation is 4 which statement describes the roots?