Use a double-angle formula to find the exact value of cos2u when 
?
  

A.
B. ?
C. ?
D. ?
E. ?

Answer: A

Mathematics

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Solve the problem.Suppose you build an architectural model of a new concert hall using a scale factor of 12. How will the volume of the actual concert hall compare to the volume of the square model?

A. 36 times as great B. 1728 times as great C. 144 times as great D. 12 times as great

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Mathematics

Provide an appropriate response.Use the sine function to find the indicated part of triangle ABC. Round to the nearest 0.1°. Find A if c = 3.7 in. and b = 2.6 in.

A. 45.4o B. 0.7o C. 2.6o D. 44.6o

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Mathematics

Solve the equation.10x - 5x + 3x = 24

A.
B.
C. {16}
D. {3}

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Mathematics

Provide an appropriate response.Do the points that lie on the boundary curve solve the inequality 36x2 - 25y2 ? 900?

A. Yes B. No

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Mathematics