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Math questions I made..can you answer them?
1] at a birthday party the girls ate 3 1/2 pizzas and the boys ate 7 1/4 pizzas. How many pizzas were eatin??
2]a family bought 2 1/2 gallons of paint for a bedroom. They had 3/4 of a gallon left over after they painted the room. How much paint did they use? How could knowledge of geometry have saved them money on paint?
3] how many sides does a polygon have if the sum of its interior ngles is 7200??
Well…hmmm…
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12 Pizzas. It doesn’t say the boys and girls shared their pizzas. The girls ate 3 1/2 so there was a total of 4. The boys ate 7 1/4 for a total of 8. 8+4=12
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2 1/4 gallons used. Paint for walls and such isn’t normally sold in 1/2 gallon cans so 3 gallons were actually paid for. If 3/4 was left over then we can therefore deduce 3-3/4=2 1/4. Having 3/4 of a gallon left over is out of their control. Having 1 3/4 left would be bad, but at least they have enough to cover up the mess ups!
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The polygon would have 42 sides. We’re looking at the INTERIOR angles added together, not exterior. If a regular polygon (circular in style), each angle would be approximately 171.428571 degrees each. 171.428571x42=7199.999982. Round up and you have 7200. An irregular polygon would have numerous different angles. Here’s the equation: For the sum of all angles: 180(n-2) If n= 42 the sum is 7200. If n=80 the sum is 14040
lets see
- 10 3/4
- 1 3/4
- 80 sides, which is one hell of a polygon.
- 10 3/4 pizza
I dont have paper and dont feel like doing 2 and 3.
- 10 3/4 2)1 3/4 next bit don’t know lol 3)absolutely no idea lol!
10 3/4 pizza 2 1/2 gal 80 sides?
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