Divide to find the exact answer. Express the answer as a whole or mixed number when possible and simplify.2
÷ 1
A. 1
B. 1
C. 2
D. 1
Answer: A
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Find the reference angle for ?. ? = -81°
A. 81° B. 171° C. -81° D. 126°
Identify the numerical coefficient of the term.6y
A. y B. -6 C. 1 D. 6
Graph the ellipse.49x2 + 16y2 = 784
A. 
B. 
C. 
D. 
Solve the problem.If a rocket is propelled upward from ground level, its height h in meters after t sec is given by h(t) = -9.8t2 + 68.6t. During what interval of time will the rocket be higher than 
A. The rocket will be higher than 98 m for times between, but not including, 4 sec and 7 sec. B. The rocket will be higher than 98 m for times between, but not including, 2 sec and 5 sec. C. The rocket will be higher than 98 m for times up to, but not including, 5 sec. D. The rocket will be higher than 98 m for times up to, but not including, 2 sec.