Use Cramer's rule to solve the system. If D = 0, use another method to complete the solution.2x + 8y + 4z = 16x + 4y + 2z = 8x + y + z = -2
A. ?
B. {(-2, 3, -1)}
C. {(-1, 3, -2)}
D. {(-2, -1, 3)}
Answer: A
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Factor, using the given factor. Assume all variables represent positive real numbers.(4m + 1)-6/5 + (4m + 1)1/5 + (4m + 1)7/5; (4m + 1)-6/5
A. (4m + 1)-6/5[1 + (4m + 1)-7/5 + (4m + 1)-13/5] B. (4m + 1)-6/5[1 + (4m + 1)7/5 - (4m + 1)13/5] C. (4m + 1)-6/5[1 + (4m + 1)8/5 + (4m + 1)11/5] D. (4m + 1)-6/5[1 + (4m + 1)7/5 + (4m + 1)13/5]
Factor by grouping.18r2 + 45ry - 2xr - 5xy
A. (2r + 5y)(x - 9r) B. (2r + 5y)(9x - r) C. (5r + 2y)(9r - x) D. (2r + 5y)(9r - x)
Solve the problem.A mutual fund invests $114,800 in utility stocks and earns 1% per year on the investment. How much money is earned per year?
A. $11,480 B. $11,480,000 C. $1,148,000 D. $1148
The given triangles are similar. Find the unknown length n. Be sure to include units in the answer.
A. 32 in. B. 38 in. C. 40 in. D. 50 in.