Use an integer or rational number to express the number representing change.On a sunny day, the water temperature in the swimming pool rises 4 degrees.

A. 4
B. -4


Answer: A

Mathematics

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Write the ratio in lowest terms.9 feet to 8 feet

A.  
B.
C.  
D.  

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Find the exact value of the expression.cos 40° cos 20° - sin 40° sin 20°

A.
B.
C.
D.

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Solve the problem.The roof of a building is in the shape of the hyperbola  where x and y are in meters. Determine the distance, w, the outside walls are apart, if the height of each wall is 8 m.

A. 58 m B. 7.6 m C. 15.2 m D. 8.4 m

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Simplify.

A. 52 B. 10 C. 28 D. 16

Mathematics