Write the ratio using the word form, the colon form, and the fraction form in lowest terms. 52 red marbles to 80 blue marbles
A. 80 to 52; 80 : 52; 
B. 80 to 52; 80 : 52; 
C. 52 to 80; 52 : 80; 
D. 52 to 80; 52 : 80; 
Answer: D
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Use least common multiple or greatest common divisor to solve the problem.Planets A, B, and C orbit a certain star once every 3, 5, and 18 months, respectively. If the three planets are now in the same straight line, what is the smallest number of months that must pass before they line up again?
A. 26 months B. 90 months C. 270 months D. 54 months
Write the expression in lowest terms. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Find u ? v.u = 5i + 8j, v = -5i - 4j
A. -57 B. 7 C. -32 D. -25
Translate the phrase to an algebraic expression. Use "x" to represent "a number". A number increased by - 
A. - 
? x
B. x - 
C. 
D. x + 