Solve the equation and check your proposed solution.x + 2 = 3
A. 
B. 5
C. -1
D. 1
Answer: D
Mathematics
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Insert parentheses as needed in the expression in order to make it equal to 0. More than one set of parentheses may be needed.8 + 4 ? 3 - 5
A. 8 + (4 ? 3) - 5 B. (8 + 4) ? 3 - 5 C. 8 + 4 ? (3 - 5) D. 8 + 4 ? 3 - 5
Mathematics
Identify the row operation that produces the resulting matrix. 
? 
A. 
R1 + 
R2 ? R1
B. 
R1 + R2 ? R1
C. 
R1 + 
R2 ? R2
D. R1 + 
R2 ? R2
Mathematics
Multiply.2x(12x - 10)
A. 12x2 - 20x B. 4x2 C. 24x2 - 10x D. 24x2 - 20x
Mathematics
State whether the equation is the result of an identity, commutative, associative, or distributive property.(3 ? 2) ? 5 = 3 ? (2 ? 5)
A. Commutative B. Identity C. Distributive D. Associative
Mathematics