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