Thursday

July 24, 2014

July 24, 2014

Posted by **Vanilla Bear** on Wednesday, September 5, 2012 at 10:26pm.

-9

Please explain and give steps as well. Thank you.

- Algebra I -
**Reiny**, Wednesday, September 5, 2012 at 10:39pmThe multiplicative inverse of the number is that number which when multiplied gives you 1

so (?)(-9) = 1

must be -1/9

- Algebra I -
**Vanilla Bear**, Wednesday, September 5, 2012 at 10:42pmoh okay but what about fractions and mixed numbers?

- Algebra I -
**Reiny**, Wednesday, September 5, 2012 at 11:10pmTo form the multiplicative inverse of a fraction , simply take its reciprocal,

e.g. for 4/7 , its x-inverse is 7/4

(4/7)(7/4) = 28/28 = 1

To form the multiplicative inverse of a mixed fraction, change the mixed fraction to an improper fraction and proceed as above

e.g. 4 3/5

= 23/5

so the x-inverse is 5/23

- Algebra I -
**Vanilla Bear**, Wednesday, September 5, 2012 at 11:11pmOh okay, i see thank you!

**Related Questions**

algebra 2 - What is the identity element for multiplication? What is the ...

Algebra - Name the property used in the equation 15n=15 multiplicative identity ...

Math - Find the multiplicative inverse of the number. 1/2 (fraction) The inverse...

Math- - Find the multiplicative inverse of the number.9 1/7 A) 1/63 B) -9 1/7 C...

math - Find the multiplicative inverse of the number. 9 1/7

math help - Can someone explain to me the following step by step , i 've looked ...

Math Check - the additive inverse of -2? 2 the multiplicative identity of -2? -2...

algebra 2 - what is the additive and multiplicative inverse of -8 and 1.5

math - 1> which expression represents "5 less than the product of 7 and x"? ...

math - Name the multiplicative inverse,or reciocal,of each number. 19/3 19x3 ...