Divide. Write with positive exponents.
A. 6x4 - 70x2 + 56x
B. 6x3 - 10x + 8
C. 42x3 - 70x + 56
D. 6x4 - 10x2 + 8x
Answer: B
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Solve the problem.The diameter of a tree was 11 in. During the following year, the circumference increased 
About how much did the tree's diameter increase?
A. 
in.
B. 
in.
C. 
in.
D. 
in.
Solve the problem.A cylinder with height 12 m and radius 2 m is filled with water and must be emptied through an outlet pipe 3 m above the top of the cylinder. Compute the work required to empty the water in the top half of the tank. Then compute the work required to empty the (equal amount of) water in the lower half of the tank. Round to two decimal places when appropriate.
A. 13,300,246.6 J; 8,866,831.1 J B. 4,433,415.55 J; 4,433,415.55 J C. 4,433,415.55 J; 8,866,831.1 J D. 8,866,831.1 J; 4,433,415.55 J
Solve the problem.Without using a calculator, find the geometric mean of 123 ? 146 ? 166 ? 18 and 127 ? 148 ? 18
A. 125 ? 147 ? 163 ? 18 B. 1210 ? 1414 ? 166 ? 182 C. 122 ? 14 ? 163 D. 125 ? 147 ? 163 E. 125 ? 147 ? 163 ? 182
Divide.
A. x2 + 3x + 3 + 
B. x2 + 3x + 3
C. x2 - 3x + 3 + 
D. x2 - 3x + 3