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3 years ago

Please answer this correctly

Mathematics

1 answer:

slavikrds [6]3 years ago

7 0

Answer:

19.63

Step-by-step explanation:

If the perimeter is 17.85, then it is equal to 2r+(2*3.14*r)/4. Solving this gives us r=5. Therefore, the quarter circle's area is (3.14*5^2)/4 = 19.625. Rounding this gives us 19.63

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Lerok [7]

$-log(x+8)=4-log(x-7)$

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$0=4-\log _{10}\left(x-7\right)+\log _{10}\left(x+8\right)$

$0+\log _{10}\left(x-7\right)=4-\log _{10}\left(x-7\right)+\log _{10}\left(x+8\right)+\log _{10}\left(x-7\right)$

$\log _{10}\left(x-7\right)=\log _{10}\left(x+8\right)+4$

$\log _{10}\left(x-7\right)=\log _{10}\left(x+8\right)+\log _{10}\left(10000\right)$

$x-7=\left(x+8\right)\cdot \:10000$

$\mathrm{Solve\:}\:x-7=\left(x+8\right)10000:\quad x=-\dfrac{26669}{3333}$

$\mathrm{Verifying\:Solutions}:\quad x=-\dfrac{26669}{3333}\space\mathrm{False}$

$\mathrm{No\:Solution\:for\:x\in \mathbb{R}}$

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2 years ago

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Simplify each expression.<br> -4.1 + 2n +1 +0.3n<br> What is the answer

Gnom [1K]

Answer: -4/5, in decimal form -0.8

Step-by-step explanation: −4.1+2n+1+0.3n

Combine Like Terms:

=−4.1+2n+1+0.3n

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It would be -56, just multiply as normal

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3 years ago

Selma is about to purchase a new television that is listed for $415.99. If sales tax is 7.75%, what

Alex787 [66]

Answer:

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Step-by-step explanation:

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2 years ago