Determine which one of the ordered triples below is a solution of the given system of equations.
a. ( 7, -9, -3 )
b. ( 1,5,2 )
c. ( 5, -2. -1 )
d. ( 7, -9, 2 )
e. ( 2, 5, 1 )
b. ( 1,5,2 )
Mathematics
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. 
B. -4
C. 2
D. - 
Mathematics
Write a negation of the statement. All squares are parallelograms.
A. All squares are not parallelograms. B. No squares are parallelograms. C. Some squares are not parallelograms. D. Some squares are parallelograms.
Mathematics
Classify the real number as a natural number, whole number, integer, rational number and/or irrational number. The number may belong to more than one set.- 
A. rational number B. integer, rational number C. whole number, irrational number D. irrational number
Mathematics
Solve.8x2 = 64x
A. 32 B. 8 C. 0, 8 D. 8, 8
Mathematics