Express the sum using summation notation. Use a lower limit of summation not necessarily 1 and k for the index of summation.a + ar + ar2 + . . . + ar9
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the problem.Find the area of the region enclosed by the curve y = x sin x and the x-axis for 8? ? x ? 9?.
A. 17? B. 0 C. 16? D. 16
Mathematics
Solve the problem.Calculate the trade discount for 6 chairs if the unit price is $39 and a single trade discount of 4.25% is allowed. Round to the nearest cent.
A. $1.66 B. $9.95 C. $40.66 D. $99.45
Mathematics
Write the fraction in lowest terms.
A. 
B. 
C. 
D. 
Mathematics
Solve.
+ 1 = 
A. 36 B. 9 C. 3 D. empty set solution
Mathematics