A regional music competition awarded 28 ribbons. The number of purple ribbons awarded was one less than the number of green ribbons. The number of red ribbons was two more than the number of green ribbons. How many of each kind of ribbon was awarded?
a. 9 green, 11 purple, and 8 red
b. 8 green, 11 purple, and 9 red
c. 9 green, 8 purple, and 11 red
d. 10 green, 7 purple, and 11 red
c. 9 green, 8 purple, and 11 red
Mathematics
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Convert the units using unit fractions.5
ft = 
in.
A. 54
B. 
C. 
D. 64
Mathematics
Find the distance between the pair of points. Give an exact answer.(3
, -1) and (7
, 0)
A. 8 units
B. 9 units
C. 81 units
D. 
units
Mathematics
Find the area of the triangle. If necessary, round the answer to two decimal places. 
A. 16.91 B. 6.16 C. 12.31 D. 24.63
Mathematics
Solve by extracting square roots.x2 - 25 = 0
A. {5} B. {14} C. {5, -5} D. {4, -4}
Mathematics