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MatroZZZ [7]
3 years ago
5

Please help me = lazy

Mathematics
1 answer:
forsale [732]3 years ago
4 0

Answer:

1.)    13\frac{3}{10}\\

2.)11\frac{3}{4}\\

3.)11\\

4.)12\frac{1}{30}

5.)7\frac{11}{15}

6.) 5\frac{4}{5}

Step-by-step explanation:

I did 6 problems for you. You can now do the other 4 problems and see how I did it. You need to have the same denominator and the add the fractions together.

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Answer: x = \frac{\pi}{4}\pm k\frac{\pi}{2}\,\,\,\,\,\,k=\{0,1,2,...\}

Step by step:

1 + 5\sin^2x= 7\sin^2x\\\sin^2 x\rightarrow z\\1 + 5z = 7z\\2z = 1\\z = \frac{1}{2}\implies \sin^2 x = \frac{1}{2}\\|\sin x| = \frac{1}{\sqrt{2}}\\\sin x = \pm\frac{1}{\sqrt{2}}=\pm\frac{\sqrt{2}}{2}\\\implies x = \frac{\pi}{4}\pm k\frac{\pi}{2}\,\,\,\,\,\,k=\{0,1,2,...\}

(Used a table of common angles)

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3 years ago
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Step-by-step explanation:

P. 366

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