Express the vector in the form ai + bj.
if A is the point (-1, -6) and B is the point (4, -13)
A. v = 5i + 7j
B. v = 5i - 7j
C. v = -5i + 7j
D. v = 7i - 5j
Answer: B
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Perform the indicated operation.18 - (18 - 22) + (-21)
A. 79 B. -43 C. 1 D. -1
Solve the problem.The chart represents the amount of fuel consumed by a machine used in manufacturing. The machine is turned on at the beginning of the day, takes a certain amount of time to reach its full power (the point at which it uses the most fuel per hour), runs for a certain number of hours, and is shut off at the end of the work day. The fuel usage per hour of the machine is represented by a periodic function. What is the period in hours of this function?
A. Period = 7 hours B. Period = 125 hours C. Period = 14 hours D. Period = 4 hours
Use the frequency distribution table to find the mean, median, and mode. If needed, round the mean to one decimal place.
A. mean: 5, median: 4.5, mode: 2 B. mean: 7.7, median: 7, mode: 7 C. mean: 5, median: 5, mode: 5 D. mean: 4.7, median: 5, mode: 5
Answer the question.Consider the numbers 7, 
, -16, 0, 
, 
. Which are whole numbers?
A. 7, -16, 0
B. 7, 0, 
, 
C. 7, 0
D. 7, -16, 0, 