Bethany ordered 12 pizzas for a party. if each person eats 3/8 of a pizza, how many people can bethany feed with 12 pizzas?

1 answer:

6 0

We are given that:
one person would eat 3/8 of a pizza.

To know the number of people that would eat 12 pizzas, all you have to do is cross multiplication as follows:
1 person .............> 3/8 pizza
?? person ............> 12 pizzas
Number of people = (12*1) / (3/8) = 32 people

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A ball is thrown in the air from a height of 3 m with an initial velocity of 12 m/s. To the nearest tenth of a second, how long

stepladder [879]

Answer: 1.4 seconds

Step-by-step explanation:

The equation is: h(t) = at² + v₀t + h₀ where

a is the acceleration (in this case it is gravity)
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a = -9.81 (if it wasn't given in your textbook, you can look it up)
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$x=\dfrac{-b \pm \sqrt{b^2-4ac}}{2a}\\\\\\x=\dfrac{-(12)\pm \sqrt{(12)^2-4(-9.81)(3)}}{2(-9.81)}\\\\\\x=\dfrac{-12\pm 16.2}{-19.62}\\\\\\x=\dfrac{-12+ 16.2}{-19.62}=-0.2\qquad x=\dfrac{-12- 16.2}{-19.62}=\large\boxed{1.4}\\$

Note: Negative time (-0.2) is not valid

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How do you solve this?

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