Solve the problem.Ten police officers patrol in pairs. Two officers have each patrolled with 5 other officers, four officers have patrolled with 3 others, two have patrolled with 2 others, and two have patrolled with only 1 other officer. How many different patrol pairs have there been?
A. 11
B. 7
C. 28
D. 14
Answer: D
Mathematics
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Simplify.2
A. 28x
B. 
C. 
D. 7x
Mathematics
Determine which purchase has the lower unit price.Brand X: 12 oz for $2.16Brand Y: 9 oz for $1.53
A. Not enough information B. Equal value C. Brand X D. Brand Y
Mathematics
Complete the statement so that the indicated property is illustrated. Simplify the answer, if possible.5(r - s - 3t) =
A. (r - s - 3t)5 = 5r - 5s - 3t B. 5r - 5s - 3t C. 5r - 5s - 15t D. 5r - 5s - 5t
Mathematics
Tritium, a radioactive isotope of hydrogen, has a half-life of 12.4 years. Of an initial sample of 69 grams, how much will remain after 75 years?
A) 0.0000 grams B) 61.5289 grams C) 1.5848 grams D) 17.2500 grams E) 1.0426 grams
Mathematics