Solve using Cramer's rule. 5x - 8y + 9z = 45 8x + 5y - 6z = 49-6x - 8y + 3z = -44

A. (7, 1, 2)
B. (7, -1, -2)
C. (8, -1, 2)
D. (1, 2, 1)


Answer: A

Mathematics

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Use the vectors u, v, w, and z head to tail as needed to sketch the indicated vector.  u + z 

A.

B.

C.

D.

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Solve the problem. Round to the nearest cent.Cindy will require $17,000 in 5 years to return to college to get an MBA degree. How much money should she ask her parents for now so that, if she invests it at  compounded continuously, she will have enough for school?

A. $10,555.66 B. $6253.95 C. $28,028.26 D. $10,311.02

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Solve by graphing. Label the axes and show where the solution is located on the graph.Alison sets aside  each month to spend on books and CDs. If she spends c dollars on CDs in a given month she may spend b dollars on books where  Graph the equation and use the graph to estimate the amount Alison may spend on books in March if she spends  on CDs.

height="204" width="204" /> A. $79 B. $21 C. $32 D. $28

Mathematics

Determine whether the sequence is geometric. If so, find the common ratio. -3, -6, -12, -24,...

A. -3
B. -2
C.
D. 2
E. not geometric

Mathematics