Multiply by a fraction equivalent to 1 to build up the fraction to one with the denominator shown.
= 
A. 
B. 
C. 
D. 
Answer: A
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Determine what the next equation would be, and verify that it is indeed a true statement.(1 × 9) - 6 = 3(21 × 9) - 6 = 83(321 × 9) - 6 = 2883
A. (432 × 9) - 6 = 38,883 B. (4,321 × 9) - 6 = 3882 C. (4,321 × 9) - 6 = 28,883 D. (4,321 × 9) - 6 = 38,883
Solve. Write results using scientific notation.A computer can do one calculation in 1.9 x 10-7 seconds. How long would it take the computer to do a trillion (1012) calculations?
A. 1.9 x 106 sec B. 1.9 x 10-7 sec C. 1.9 x 105 sec D. 1.9 x 1012 sec
Simplify.4(
+ 9) - (5 - 5)
A. 
B. 15
C. 12
D. 
Solve the problem.Jerry has three pieces of string. The total length is 95 inches. The sum of the two longer pieces is 79. The middle piece is twice as long as the shortest piece. What are the lengths of the three pieces?
A. 8, 16, and 71 inches B. 47, 57, and 71 inches C. 16, 47, and 57 inches D. 16, 32, and 47 inches