problems. a Three friends go into the bookshop. Billy buys a mystery novel and a science book. He pays £19.94. Gemma buys the same science book and an atlas. Her bill comes to £28.98. Louis buys the mystery novel and the atlas and pays £24.94. What is the price of each book?

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A: Step 1: Step 2: Step 3: Step 4:

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A: or you can use Heron's Formula to find the area of the triangle.

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A:

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A: Here, I have taken marked price as $100.

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A: The confidence interval is  CI = [0.005296,0.012758]

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A: Given that  Mean = M = 39269 Standard deviation = SD =2550 X ~ Normal ( M = 39269 , SD = 2550 )

Q: Can you make the answer more clearer ?

A: 79,86,84,86,69,86,75,78,88

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