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Inessa [10]
3 years ago
11

12 and 13 please I’m giving 71 points

Mathematics
2 answers:
Andreas93 [3]3 years ago
8 0

Answer and step-by-step explanation for question - 12 :

The~five~digit~number~contains~of~5's~and~2's.~The~5's are~in~the~ten~thousand~and~one~thousand~columns.~Which~means~that~ one~five~represent~50,000~and~the~second~represents~5,000. ~The 2's~are ~in~the~hundreds~and~tens~columns~meaning~one~2 represents~200~and~the~other~2~represents~20.~In~a~direct comparison~of~these~numbers~the~5's~equal~55,000~and~the~2's~equal 220.

Answer and step-by-step explanation for question - 13 :

Forks~needed= 2000-1996=4

Knives~needed=2000-1745=225

Extra~spoons=2116-2000=116

Thus,4~forks~are~needed,255~knives~are~needed~and,116~spoons~are~extra.

Pavlova-9 [17]3 years ago
5 0

Answers and Step-by-step explanation:

12: The 5s are worth a lot more than the 2s. The 5s are worth fifty thousand and five thousand whereas the 2s are only worth two hundred and twenty.

13: She needs 4 forks (2000 - 1996 = 4)

    She needs 255 knives (2000 - 1745 = 255)

    She has 226 extra spoons ( 2116 - 2000 =  116)

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\cos\theta =\frac{-2}{5}

As both sin\,\theta,

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In the third quadrant,

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\sin\,\theta =-\sqrt{1-\cos^2\,\theta} \\=-\sqrt{1-(\frac{-2}{5})^2 } \\\\=-\sqrt{1-\frac{4}{25} }\\\\=-\sqrt{\frac{25-4}{25} }\\\\=-\frac{\sqrt{21} }{5}

\tan\,\theta = \frac{\sin\,\theta}{\cos\,\theta }\\\\=\frac{\frac{-\sqrt{21} }{5} }{\frac{-2}{5} }\\\\=\frac{\sqrt{21} }{2}

\sec\,\theta =\frac{1}{\cos\,\theta }\\\\=\frac{1}{\frac{-2}{5} }\\\\=\frac{-5}{2}

\ cosec \,\theta = \frac{1}{sin\,\theta }\\\\=\frac{1}{\frac{-\sqrt{21} }{5} }\\\\=\frac{-5}{\sqrt{21} }

\cot\,\theta =\frac{1}{\tan\,\theta}\\\\=\frac{1}{\frac{\sqrt{21} }{2} }\\\\=\frac{2}{\sqrt{21} }

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