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3 years ago

12

Ms. Phillips ordered 56 pizzas for a school tundraiser. Of the pizzas ordered, of them were pepperoni, 19 were cheese, and the r

est were veggie pizzas. What fraction of the pizzas was veggie?

1 answer:

Alex3 years ago

4 0

Answer:

How many of them were pepperoni?? I cant answer if information is missing...

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Answer:

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Step-by-step explanation:

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From trigonometry, we know that:

$\sin(\theta)=\dfrac{Opposite}{Hypotenuse}\\$Therefore:\\Opposite=1\\Hypotenuse=4\\Using Pythagorean theorem:\\Hypotenuse^2=Opposite^2+Adjacent^2\\4^2=1^2+Adjacent^2\\Adjacent^2=16-1\\Adjacent^2=15\\Adjacent=\sqrt{15}$

Now, in Quadrant II,

The x-axis is negative
The y-axis is positive

Therefore, the Adjacent angle to $\theta_1 =-\sqrt{15}$

Therefore:

$\cos(\theta_1)=\dfrac{Adjacent}{Hypotenuse}=\dfrac{-\sqrt{15}}{4}\\\\\cos(\theta_1)=-\dfrac{\sqrt{15}}{4}$

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