Write the expression in the standard form a + bi.
A. 
- 
i
B. - 
- 
i
C. - 
+ 
i
D. 
+ 
i
Answer: D
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Find the probability.A committee of 11 members is voting on a proposal. Each member casts a yea or nay vote. On a random voting basis, what is the probability that the proposal wins by a vote of 7 to 4?
A. 
B. 
C. 
D. 
Solve the problem.The angular acceleration ? (in rad/s2) of the wheel of a car is given by ?(t) = -5.8t3 + 28.84t2,where t is the time (in s). For what values of t is ? = 23.04 rad/s2?
A. 1, -0.8276 B. 1, 4.8, -0.8276 C. 1, 4.8 D. 4.8, -0.8276
Integrate by first changing the form of the integrand.Integrate
by using the fact that elnx = x.
A. xe-x + C B. e-x + C C. -xe-x + C D. -e-x + C
Write the standard form of the equation of the circle whose radius is r and whose center is (h, k).r = 
; (h, k) = (-5, 7)
A. (x - 7)2 + (y + 5)2 = 289 B. (x - 5)2 + (y + 7)2 = 17 C. (x + 5)2 + (y - 7)2 = 17 D. (x + 7)2 + (y - 5)2 = 289