Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation.3 + 12 + 27 + . . . + 75
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Solve using Cramer's rule.2x + 2y = 322x - 3y = -3
A. (-7, 9) B. (9, 7) C. (7, 9) D. (-9, -7)
Mathematics
Provide an appropriate response.Determine the volume of the given figure. Round the answer to nearest hundredth of a foot.
What will be an ideal response?
Mathematics
Solve the problem.Between 8:30 a.m. and 9:30 a.m., cars drive through the Cappuccino Express at a rate of 12 cars per hour (0.2 per minute). The following formula from probability can be used to determine the probability that a car will arrive within t minutes of 8:30a.m. F(t) = 1 - e-0.2tDetermine how many minutes are needed for the probability to reach 0.6.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Multiply.-4 ? 18
A. -90 B. -72 C. 68 D. -68
Mathematics