Valerie and Bret have a total 27 dog show ribbons. Bret has twice as many ribbons as Valerie. How many ribbons does each have?

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?

Which equation can be simplified to find the inverse of y = 2x2^2