Solve the system.4x + 5y + z = -413x - 4y - z = 14x + y + 4z = -9
A. {(-5, 4, -5)}
B. {(-5, -5, 4)}
C. {(4, -5, -5)}
D. ?
Answer: B
Mathematics
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A. 30.615 B. 31.485 C. 30.515 D. 30.015
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Solve the problem.The Smiths want to put down a rectangular crushed-stone driveway to their house. The driveway is 7 yards wide and 196 yards long. The crushed stone is to be 9 inches thick. How many cubic yards of stone will they need? Round to the nearest tenth when necessary.
A. 343 yd3 B. 4116 yd3 C. 12,348 yd3 D. 1029 yd3
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Write the whole number in standard form.Seventy-nine thousand, nine hundred three
A. 79,930 B. 79,903 C. 7993 D. 790,903
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Perform the conversion.80.89 hectometers = _____ kilometers
A. 0.809 B. 8.089 C. 8089 D. 808.9
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