Find the center and the length of a radius of the circle.x2 + y2 - 2x - 6y + 1 = 0
A. (–1, –3), r = 3
B. (3, –1), r = 6
C. (1, 3), r = 6
D. (3, 1), r = 3
E. (1, 3), r = 3
Answer: E
Mathematics
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Write the first three terms in the binomial expansion, expressing the result in simplified form.(2x + 3y)7
A. 7x7y + 6x6y2 + 5x5y3 B. 7x7 + 6x6y + 5x5y2 C. 128x7 + 1344x6y + 6048x5y2 D. 128x7y + 1344x6y2 + 6048x5y3
Mathematics
Find the probability.A card is drawn from a well-shuffled deck of 52 cards. What is the probability of drawing a face card or a 4?
A. 
B. 
C. 
D. 16
Mathematics
Evaluate.(4x)2 - 5x for x = 3
A. 129 B. 33 C. 21 D. 139
Mathematics
Solve the equation.2.8 = -10t + 7.2
A. t = 7.44 B. t = 0.44 C. t = –0.56 D. t = 1.44 E. none of these
Mathematics