stacey invested $12,000 partly in bonds at 8% per annum and the remainder in a second mortgage paying 9% per annum after one year he told interest earned was $1043 how did stacey invest at each rate

Acircle has the equation (x-2)^2 +y^2 =5. what are the coordinates of the circle's center?

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two

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?