If possible, solve each system by an algebraic method (substitution or addition method). Otherwise, state that the problem has no solution or an infinite number of solutions.2x + 
y = 122x + 
y = 
A. (-3, 7)
B. (7, -3)
C. (8, -4)
D. (-7, -4)
Answer: B
Mathematics
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State whether the statement is true or false.Let A = {x|x ? N and x ? 18} B = {x|x is a continent}{The voting age} ? A
A. True B. False
Mathematics
Convert the measure to its alternate U.S. or metric form. Write improper fractions as mixed numbers for U.S. measures and as decimals for metric measures.Convert 20 kilograms to pounds.
A. 33 pounds B. 76 pounds C. 44 pounds D. 4 pounds
Mathematics
Express the area of the region bounded by the given line(s) and/or curve(s) as an iterated double integral.The coordinate axes and the line 
A. 
B. 
C. 
D. 
Mathematics
Answer the question or solve the problem.Under what conditions must the inequality symbol be reversed when solving an inequality?
What will be an ideal response?
Mathematics