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Alex_Xolod [135]
3 years ago
8

Nora read 1/9 of a book on Monday and 2/5 on Tuesday. What fraction of the book does she have left to read

Mathematics
1 answer:
finlep [7]3 years ago
5 0

Answer:

Step-by-step explanation:

On Monday, Nora read ¼ of the book, therefore she is left with ¾ of the original book.

Then on Tuesday, she read 2/5 of what was left on Monday therefore she is left with 3/5 of ¾ of the original book. This is equal to:

(3/5) (3/4) = 9/20

She still needs to read 9/20 of the book or 0.45 or 45% of the book.

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Use the binomial theorem to expand the binomial (x + -2y)8.
m_a_m_a [10]

Answer:

256x8y8256+2x8y8+56x3y7+28x7y2+126x5y4+x8+1048x7y+1932x6y2+2240x5y3+2310x4y4+2296x3y5+1932x2y6+1048xy7+y8+8x6y+56xy3+28x2y+8xy

Step-by-step explanation:

3 0
4 years ago
36 irrational or rational and why?
bazaltina [42]
Rational number because for a number to be irrational it needs to have a decimal or be smaller than 1
4 0
3 years ago
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HELP me with These questions
Feliz [49]

Answer: 13.96 in²

<u>Step-by-step explanation:</u>

  • radius (r)

d = 2r

16 = 2r

8 = r

  • angle in radians (θ)

\frac{180}{\pi} =\frac{25}{\theta}

180(θ) = 25(π)

      θ  = \frac{25}{180}\pi

      θ  = \frac{5}{36}\pi

  • Area (A)

A = \frac{1}{2}r² θ

   = \frac{1}{2}(8)^{2}(\frac{5}{36}\pi)

   = \frac{40}{9}\pi

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*************************************************************************

Answer: 12π

<u>Step-by-step explanation:</u>

s = rθ

  = 60(\frac{\pi }{5})

  = 12π

*************************************************************************

Answer: 22.440 cm²

<u>Step-by-step explanation:</u>  

A = \frac{1}{2}r²θ

   = \frac{1}{2}(10)²(\frac{\pi} {7})

   = \frac{50}{7}\pi

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*************************************************************************

Answer: 270°, 630°, -450°, -810°

<u>Step-by-step explanation:</u>  

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                                    270 + 360 = 630

negative: -90 - 360 = -450

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*************************************************************************

Answer: \frac{3\pi} {4}

<u>Step-by-step explanation:</u>  

  \frac{19\pi} {4} - 2\pi

= \frac{19\pi} {4} - \frac{8\pi} {4}

= \frac{11\pi} {4}

\frac{11\pi}{4} - 2\pi

= \frac{11\pi} {4} - \frac{8\pi} {4}

= \frac{3\pi} {4}

If you subtract another 2π, you will end up with a negative value.  The question asks for the smallest positive value.

5 0
4 years ago
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Dahasolnce [82]
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12 = x
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70= 6x
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X= 11.67
4 0
3 years ago
Which statements are true about the place values in the number 88.888?
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I believe A and B are the ones. As for explaining? hmm. I would honestly say that any number to the right of a number is a tenth of the place above it. But then again, it's optional to explain ;P
3 0
3 years ago
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