Solve the equation.7x - (3x + 8) = 8
A. 6
B. 3
C. 5
D. 4
Answer: D
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Rationalize the denominator. Assume that all variables represent positive values.
A. 
B. 
C. 
D. 
Solve.A total of 24 cu yd of concrete is required for pouring a foundation. The ratio of cement to sand to gravel for this application is 1:3:4, and the total amount of these components must be 
times the volume of concrete needed. Determine how many cubic yards of each component are needed.
A. 4.5 cu yd of cement, 13.5 cu yd sand, 18 cu yd gravel B. 4.0 cu yd of cement, 13.0 cu yd sand, 18.5 cu yd gravel C. 3.0 cu yd of cement, 12.0 cu yd sand, 16.5 cu yd gravel D. 3.5 cu yd of cement, 12.5 cu yd sand, 16.5 cu yd gravel
Write the system of equations that corresponds to the augmented matrix.
A. x = -2 y = 4 z = 6 B. x = -4 y = 8 z = 12 C. x = 2 y = -4 z = -4 D. x = 0 y = 0 z = 0
Combine where possible.
- 6
- 6
A. -35
B. -12
C. -12
D. -35