Perform the indicated operation by hand.(125.3) ? (0.67)

A. 83.951
B. 84.061
C. 84.062
D. 84.051


Answer: A

Mathematics

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Solve.? x = ? y + 17°Find the measure of ? y if ? x = 150°.

A. -133° B. 167° C. 9° D. 133°

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Let Q represents a mass of radioactive radium (in grams), whose half-life is 1,599 years. The quantity of radium present after t years is . Determine the quantity present after 500 years. Round to the nearest hundredth of a gram, if necessary.

a.  0 g b.  0.31 g c.  0.81 g d.  1.61 g e.  2 g

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Solve the problem.A lottery game has balls numbered 1 through 19. What is the probability of selecting an even numbered ball or a 5?

A.
B.  
C.  
D.  

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Use the graph to obtain the graph of the reciprocal function. Give the equation of the function for the graph that you obtain.y = - 2 cos x

A. y = - 2 csc x

B. y = 2 sec x

C. y = - 2 sin x

D. y = - 2 sec x

Mathematics