M < ABC = 2 * m <DBA
8x - 6 = 2x + 5
6x = 11
x = 11/6 or 1 5/6 answer
-6r(4r - 5) - 2(r - 2)
(-6r).4r - 5.(-6r) - 2.r - 2.(-2)
-24r² + 30r - 2r + 4
-24r² + 28r + 4
Answer:the number of short sleeves shirt sold is 15
the number of long sleeves shirt sold is 5
Step-by-step explanation:
Let x represent the number of short sleeves shirt sold by the student council.
Let y represent the number of long sleeves shirt sold by the student council.
The student council sells short sleeves for $5 each and long sleeve for $6 each. They were sold for a total of $105. This means that
5x + 6y = 105 - - - - - - - - - -1
The total number of shirts sold is 20. This means that
x + y = 20
Substituting x = 20 - y into equation 1, it becomes
5(20 - y) + 6y = 105
100 - 5y + 6y = 105
- 5y + 6y = 105 - 100
y = 5
x = 20 - y = 20 - 5
x = 15
The surface area is <span>153.86
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