Find a so that the statement is true.
a = __________
Fill in the blank(s) with the appropriate word(s).
Answer: 2
Mathematics
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Determine the center and the radius of the circle.x2 + y2 - 8x - 6y + 21 = 0
A. (4, -3), r = 2 B. (-4, -3), r = 2 C. (4, 3), r = 2 D. (-4, 3), r = 2
Mathematics
Find all points where the function is discontinuous.
A. x = 2 B. None C. x = -2, x = 2 D. x = -2
Mathematics
Use the rules of exponents to simplify the expression. Write the answer with positive exponents. Assume that all variables represent positive real numbers.(4a1/7b5/7)3
A. 12a3/7b5/7 B. 64a3/7b15/7 C. 4a3/7b15/7 D. 64(ab)15/7
Mathematics
Find the nth term {an} of the geometric sequence. When given, r is the common ratio.a = -3; r = 
A. an = -3 
n
B. an = -3 
n-1
C. an = -3 
n-1
D. an = 
(-3)n-1
Mathematics