Evaluate.
A. -53
B. -21
C. -37
D. 53
Answer: A
Mathematics
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A. 25
B. 100
C. 50
D. 
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The mass of the part of a metal rod that lies between its left end and a point x meters to the right is 
Find the linear density when x is m.
What will be an ideal response?
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Solve.Two angles of a triangle are 40° and 100°. What is the measure of the third angle?
A. 220° B. 40° C. 140° D. -50°
Mathematics