A ball is tossed upward and then falls to the ground. Its height after t seconds is given by the function 
. During the period the rock is rising, what can be said about 
?
?
A. is positive.
B. is negative.
C. is zero.
D. None of the above
Answer: A
Mathematics
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Convert the angle to decimal degrees and round to the nearest hundredth of a degree.-298°25'7''
A. -298.41° B. -298.42° C. -298.46° D. -298.36°
Mathematics
Simplify. Assume that no radicands were formed by raising negative quantities to even powers.
- 5
- 6
A. -11
B. -11
C. -51
D. -51
Mathematics
Solve the system mentally, without the use of a calculator or pencil-and-paper calculation. Try to visualize the graphs of both lines.x - 0y = 53x + y = 7
A. x = -5; y = 8 B. x = 5; y = -8 C. x = 3, y = 7 D. x = 5; y = 4
Mathematics
Determine whether the expression is rational.
A. Yes B. No
Mathematics