Write the number in standard form.2(cos 270° + i sin 270°)
A. -2i
B. -i
C. 2i
D. -2
Answer: A
Mathematics
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Solve the problem.A coin is tossed upward from a balcony 390 ft high (h0) with an initial velocity (v0) of 
, according to the formula h(t) = -16t2 + v0t + h0, where t is time in seconds. During what interval of time will the coin be at a height of at least 70 ft?
A. 0 sec ? t ? 5 sec B. 5 sec ? t ? 10 sec C. 0 sec ? t ? 1 sec D. 4 sec ? t ? 5 sec
Mathematics
Divide.2771 ÷ 65
A. 45 R57 B. 42 R41 C. 45 R5 D. 42
Mathematics
Find the value of the strategy.Let M be the matrix game having payoff matrix 
.Find ?(x) when x = 
.
A. 0
B. - 
C. 
D. - 
Mathematics
Solve the equation.
= y + 3
A. 
B. 
C. 
D. 
Mathematics