<h2><u>Answer</u><u> </u>:</h2>
![\bigstar\boxed{\bf\purple{\leadsto b=\dfrac{a+4}{4}}}](https://tex.z-dn.net/?f=%5Cbigstar%5Cboxed%7B%5Cbf%5Cpurple%7B%5Cleadsto%20b%3D%5Cdfrac%7Ba%2B4%7D%7B4%7D%7D%7D)
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➠ On solving the given equation for b :
![\rm{\longrightarrow 6b+2a-4=2b+3a}](https://tex.z-dn.net/?f=%5Crm%7B%5Clongrightarrow%206b%2B2a-4%3D2b%2B3a%7D)
![\rm{\longrightarrow 6b-2b=3a-2a+4}](https://tex.z-dn.net/?f=%5Crm%7B%5Clongrightarrow%206b-2b%3D3a-2a%2B4%7D)
![\rm{\longrightarrow 4b=a+4}](https://tex.z-dn.net/?f=%5Crm%7B%5Clongrightarrow%204b%3Da%2B4%7D)
![\rm{\longrightarrow b=\dfrac{a+4}{4}}](https://tex.z-dn.net/?f=%5Crm%7B%5Clongrightarrow%20b%3D%5Cdfrac%7Ba%2B4%7D%7B4%7D%7D)
⠀⠀━━━━━━━━━━━━━━━━━━━━━━━━━━━━⠀⠀
I am assuming that you mean
22
![\frac{1}{4}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B4%7D%20)
, which is 22.25
and
11
![\frac{3}{4}](https://tex.z-dn.net/?f=%20%5Cfrac%7B3%7D%7B4%7D%20)
, which is 33.75
so each share gives you a profit of 33.75-22.25=11.5
and you bought and sold 25 of them, so your profit is 21.5*25=287.50, the last answer!
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
3 because you are moving the decmal one to the right