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slavikrds [6]
3 years ago
7

Lisa and Audrey were selling pizzas to raise money for new cheerleading uniforms. Lisa

Mathematics
1 answer:
sergejj [24]3 years ago
5 0

Answer:

Call the number of pizzas x;They buy pizzas from the supplier at:4x+100They sell at:7xWhen these two expressions match they will start to make a profit; so:4x+100=7xRearranging:3x=100x=1003=33.3So after the 33rd pizza they will start to make a profit.For example at the 34th they have payed:34%C3%974+100=236$ to the supplier;Selling they will get: 7%C3%9734=238$. sorry if this is complex

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Answer:

Number 11: She has to add 5/36 of a cup

Number 12: The present costs $22,2

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<u>Number 11</u>: 1/4 = 9/36  and 1/9 = 4/36

3*1/4  -  3*1/9  = 3*9/36  - 3*4/36  = 5/36

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