Use substitution to solve the system of equations.
x - 
y = -18
x + 
y = -9
A. (0, -12)
B. (12, 0)
C. (0, 12)
D. (-12, 0)
Answer: D
Mathematics
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A. 0.02 B. 2 C. 0.2 D. 0.002
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Divide.4 ÷ (-8)
A. 5 B. -5 C. -0.5 D. -1.5
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Find the volume of the specified solid. Use 3.14 as the approximate value of ?, and round your answer to the nearest tenth.Find the volume of a cylinder with diameter 12.4 cm and height 7.8 cm.
A. 393.3 cm3 B. 272.6 cm3 C. 545.2 cm3 D. 941.5 cm3
Mathematics