Decide whether the ordered pair is a solution of the given system.(3, -5)x + y = -2x - y = 8
A. No
B. Yes
Answer: B
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Solve the problem.A convention manager finds that she has $1500, made up of twenties and fifties. She has a total of 48 bills. How many fifty-dollar bills does the manager have?
A. 30 fifty-dollar bills B. 18 fifty-dollar bills C. 12 fifty-dollar bills D. 48 fifty-dollar bills
Solve the problem.A baseball player hit a baseball with an initial speed of 140 feet per second at an angle of 40° to the horizontal. The ball was hit at a height of 3 feet off the ground. Find parametric equations that describe the motion of the ball as a function of time. How long is the ball in the air? When is the ball at its maximum height? What is the distance the ball traveled?
A. x = 107.24t, y = -16t2 + 90.02t + 3 5.659 sec, 2.813 sec, 606.871 feet B. x = 107.24t, y = -16t2 + 90.02t + 3 5.659 sec, 2.813 sec, 1021.812 feet C. x = 107.24t, y = -16t2 + 90.02t + 3 11.319 sec, 2.813 sec, 1213.85 feet D. x = 107.24t, y = -16t2 + 90.02t + 3 5.593 sec, 2.813 sec, 599.793 feet
Solve this equation.-20 = -5t
A. t = 4 B. t = 10 C. t = -4 D. t = -10
The lengths of the legs of a right triangle are given. Find the hypotenuse.a = 5, b = 12
A. 10 B. 13 C. 4 D. 169