Write a word name for the number in the sentence.Scientists were predicting the demise of the space colony as the population approached 600,040,000.

A. Six hundred billion, forty million
B. Six hundred million, forty thousand
C. Six hundred forty million
D. Six hundred million, forty hundred


Answer: B

Mathematics

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Find the length of the curve.The curve r = a cos2 , 0 ? ? ? ?, a > 0

A. 2a
B.
C. 2?a
D.

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Graph the equation by plotting points.5x - 15y = 30

A.

B.

C.

D.

Mathematics

Determine if the given number is a solution to the equation.Is y = 4 a solution to the equation 16 - y = 12?

A. Yes B. No

Mathematics

Set up the percent proportion for the application problem. Do not try to solve for any unknowns.In a one-day storm, Odentown received 15% of the normal rainfall for a season. Odentown received 9 inches of rain that day. How many inches of rain normally fall during the season?

A.  = 
B.  = 
C.  = 
D.  = 

Mathematics