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LenKa [72]
3 years ago
12

Find the multiplicative inverse of 2/3 * - 5/7​

Mathematics
1 answer:
boyakko [2]3 years ago
6 0

Answer:

-\frac{21}{10}   is the required multiplicative inverse.

Step-by-step explanation:

First of all simplify the given expression.

\frac{2}{3}\cdot \frac{-5}{7}=-\frac{2\cdot \:5}{3\cdot \:7}=-\frac{10}{21}

Multiplicative inverse of any number when multiplied gives 1.

The multiplicative inverse of  -\frac{10}{21}  is -\frac{21}{10}  because:

-\frac{10}{21}\times -\frac{21}{10}=1

Best Regards!

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Solve for x. Write both solutions, separated by a comma. 8x^2+7x-1=0
Ivan

Answer:

<h2>x = 1/8 , - 1</h2>

Step-by-step explanation:

8x² + 7x - 1 = 0

Rewrite 7x as a difference

That's

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Factorize

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(8x - 1)( x + 1) = 0

8x - 1 = 0 x + 1 =0

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The solutions are

<h3>x = 1/8 , - 1</h3>

Hope this helps you

7 0
3 years ago
Two stands at a craft fair sell cone-shaped candles. They are made by pouring wax into a mold. Booth A sells a candle with a rad
frez [133]
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Hope this helps!
6 0
3 years ago
5. Show 3 different ways on how you can multiply two polynomials to get 30x^3.
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Answer:

A

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Step-by-step explanation:

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