Subtract as indicated.-  - 

A. - 
B.
C. - 
D. - 


Answer: D

Mathematics

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A 1.5-mm layer of paint is applied to one side of the following surfaces. Find the volume of paint needed. Assume that x and y are measured in meters.The spherical zone generated when the upper portion of the circle x2 + y2 = 121 on the interval  is revolved about the x-axis.

A. ? m3
B. 594? m3
C.  m3
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Complete.3 gal =    qt

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Answer the question or complete the sentence to make a true statement.The sum of two positive numbers will always be a    number.

A. Positive B. Negative

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Solve the problem.Use the formula P = 4s to find the perimeter of a square with side length 21 centimeters.

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