Add or subtract. Express the answer as a mixed number.15
- 6
A. 8
B. 9
C. 8
D. 7
Answer: A
Mathematics
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Solve the problem.Suppose that R ={(x, y): 0 ? x ? 7, 0 ? y ? 7},R1 = {(x, y): 0 ? x ? 7, 0 ? y ? 6}, andR2 = {(x, y): 0 ? x ? 7, 6 ? y ? 7}. Suppose, in addition, that
dA = 7, 
dA = 9, and 
dA = 2.Use the properties of integrals to evaluate 
dA.
A. 9 B. 18 C. 11 D. 7
Mathematics
Solve the problem.The population p, in thousands, of one town can be approximated by 
where d is the number of years since 1985. Estimate the population of the town in the year 1990.
A. About 7 B. About 11,000 C. About 7000 D. About 15,000
Mathematics
Simplify the expression.
?
What will be an ideal response?
Mathematics
Divide.
A. 3r7 - 5r3 B. 9r7 - 15r3 C. 3r8 - 5r4 D. 3r9 - 5r5
Mathematics