Solve for the specified variable.M = ?r2hd
for r
A. r = 
B. r = 
C. r = ±
D. r = 
Answer: A
Mathematics
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Write the equation for the circle described.Center at (7, 5), radius 
A. (x + 5)2 + (y + 7)2 = 25 B. (x - 7)2 + (y - 5)2 = 5 C. (x - 5)2 + (y - 7)2 = 25 D. (x + 7)2 + (y + 5)2 = 5
Mathematics
Find the sum or difference.
- 
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation. Assume that all variables represent positive numbers.
A. x
B. 7x
C. 7x
D. 7x4
Mathematics
Rewrite the expression using the indicated property of real numbers.Associative property of multiplication:
[(-2)(-7)](5)
A. [(-7)(-2)](5) B. (2)[(-7)(-5)] C. (-2)[(-7)(5)] D. (5)[(-2)(-7)]
Mathematics