Perform the necessary operations.-2 + 12 - (-17) - 20
A. 13
B. 7
C. 47
D. -11
Answer: B
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Perform the indicated operation. Assume that all variables are nonnegative.(5
)2
A. 250
B. 10
C. 25
D. 2500
Identify the property. Do not simplify.4 + (2 + 7) = (4 + 2) + 7
A. Commutative Property of Addition B. Distributive Property C. Associative Property of Multiplication D. Associative Property of Addition
Solve the problem.A chemist needs 12 liters of a 50% salt solution. All she has available is a 20% salt solution and a 70% salt solution. How much of each of the two solutions should she mix to obtain her desired solution?
A. 4.8 L of 20% ; 7.2 L of 70% B. 6 L of 20%; 6 L of 70% C. 3.6 L of 20%; 8.4 L of 70% D. 2.4 L of 20%; 9.6 L of 70%
Sketch the line with the given slope that passes through the indicated point.Slope is undefined; line passes through the point (-2, 5)
A. 
B. 
C. 
D. 