a straight line is 180° so:
x+2/3x=180
multiply everything with 3 so that you'll looser the denominator:
3x+2x=540
5x=540
x=540:5
x=108
(2/3x= 72)
Sorry I can't read it,
otherwise i would be happy to help you
Answer:
7. A = π
8. A = 6.25π
9. A = 16π
Step-by-step explanation:
When you have a bunch of similar problems that all use the same formula, it is usually convenient to solve the problem in generic terms, then put in the specific numbers.
You are asked to find A, and you are given the formula ...
![C^2=4\pi A](https://tex.z-dn.net/?f=C%5E2%3D4%5Cpi%20A)
To rewrite this as an equation for A, you divide by its coefficient, 4π.
![A=\dfrac{C^2}{4\pi}](https://tex.z-dn.net/?f=A%3D%5Cdfrac%7BC%5E2%7D%7B4%5Cpi%7D)
If you like, you can go one step further, replacing C with kπ. Now, you have ...
![A=\dfrac{(k\pi)^2}{4\pi}=\dfrac{k^2}{4}\pi](https://tex.z-dn.net/?f=A%3D%5Cdfrac%7B%28k%5Cpi%29%5E2%7D%7B4%5Cpi%7D%3D%5Cdfrac%7Bk%5E2%7D%7B4%7D%5Cpi)
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7. k=2, A=(2^2)/4·π
A = π
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8. k=5, A=(5^2)/4·π
A = (25/4)π
A = 6.25π
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9. k=8, A=(8^2)/4·π
A = 16π
We must find the unit rate for each. Since frosted flakes is already given, we only need raisin brain.
13/1.4 = 9.29
9.29<11
Frosted flakes will be more sugary. Hope this helps!