Rewrite the equation in standard form. Find the center and radius of the circle.x2 + y2 - 10x + 9 = 0
A. (x + 5)2 + y2 = 16
center (-5, 0), r = 4
B. (x - 5)2 + y2 = 16
center (5, 0), r = 4
C. x2 + (y - 5)2 = 16
center (0, 5), r = 4
D. (x - 5)2 + y2 = 16
center (-5, 0), r = 4
Answer: B
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Solve the problem.If two resistors are connected in parallel, the total impedance is given by 
. Find the total impedance ZT when the impedances 
and 
are in parallel. 
?Parallel Circuit
A. 424
B. 
C. - 
- 
j
D. - 
+ 
j
Complete the trinomial so it is a perfect square.x2 + 
x + 
A. 
B. 
C. 196
D. 
Find two square roots for the complex number. Write your answer in standard form.
?
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A basket contains five red balls, four white balls and three blue balls. Two balls are drawn, one after the other, with the first ball replaced before the second is drawn.Find the probability of drawing at least one white ball.
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