Solve the problem.The sum of three numbers is -11. The first, minus the second, plus 4 times the third, is -4. The third, plus 3 times the first, plus the second, is -21. What are the numbers?
A. -5, -5, -1
B. 5, 5, 1
C. No solution
D. -5, -5, -5
Answer: A
Mathematics
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Solve. Where appropriate, include approximations to the nearest thousandth. If no solution exists, state this.8.1x - 80 = 0
A. 0.541 B. 0.477 C. 2.290 D. 2.095
Mathematics
Find the standard form of the equation of the hyperbola.
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics
In the following exercise, assume straight-line appreciation. ? An apartment building was purchased for $500,000, excluding the cost of land. The owners expect the property to double in value in 20 years. Find the appreciation equation. ?
A. 
B. ?
C. ?
D. ?
E. none of these
Mathematics
Write as a decimal number rounded as indicated.
; Round to the nearest tenth.
A. 0.8 B. 0.7 C. 0.3 D. 0.6
Mathematics