Lunch cost $4.14 and she got $5.86
Answer:





x | y
16 4
8 2
36 9
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One way:
3x + 4x + 5 x = 30
12 x = 30
Divide by 12
x = 2.5
3x = 7.5 (2.5x3)
4x = 10 (2.5x4)
5x = 12.5 (2.5x5)
7.5cm + 10cm +12.5cm = 30cm There are your three sides.
10/14 for the first one, 9/13 for the second one. Multiply these two numbers, you get 45/91, so the answer is C
Answer:
7x?
Step-by-step explanation: