Subtract.-6 - (-9)
A. -3
B. -6
C. 3
D. -15
Answer: C
Mathematics
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Multiply.
? 
A. 
B. 
C. 
D. 
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Use the product rule to simplify the expression. Write the result using exponents.x3 ? x7
A. x7 B. x3 C. x11 D. x10
Mathematics
User row operations to change the matrix to reduced form.
A. 
B. 
C. 
D. 
Mathematics
Multiply. Assume that all variables represent non-negative real numbers.
? 
A. 20
B. 20
C. 25
D. 4
Mathematics