Express the quantity as a signed number.Losing 21 cents

A. -21 cents
B. 21 cents


Answer: A

Mathematics

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Perform the indicated operations.(2x - )(2x + )

A. 4x2 - 4x -  
B. 4x2 - 4x - 
C. 4x2 + 2x -  
D. 4x2 - 2x -  

Mathematics

Draw the given angle in standard position. Draw an arrow representing the correct amount of rotation. Find the measure of two other angles, one positive and one negative, coterminal with the given angle.130°

A. 310° and -50°

B. 310° and -50°

C. 490° and -230°

D. 490° and -230°

Mathematics

Find the exact value of the expression.cos  sin  - cos  sin 

A.
B. 1
C.
D.

Mathematics

Sketch a graph of f.f(x) = -x2 - 4

A.

B.

C.

D.

Mathematics