Solve the formula for the indicated letter. Assume that all variables represent nonnegative numbers.A = 
?r2 for r
A. r = 
B. r = 3
C. r = 
D. r = 
Answer: A
Mathematics
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The slope of a line is given. Determine the slope of the line perpendicular to the line whose slope is given.m = -7
A. m = 7
B. m = - 
C. m = -7
D. m = 
Mathematics
Identify the property illustrated by the expression.12 + (20 + 22) = (12 + 20) + 22
A. commutative property of addition B. distributive property C. identity element for addition D. associative property of addition
Mathematics
Write the ratio in lowest terms.50 : 90
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.(5x - 1)2 = 9(5x - 1) - 18
A. 
B. 
C. 
D. {3, 6}
Mathematics