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

Find the multiplicative inverse of the number.

-9

Please explain and give steps as well. Thank you.

- Algebra I -
**Reiny**, Wednesday, September 5, 2012 at 10:39pm
The 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 10:42pm
oh okay but what about fractions and mixed numbers?

- Algebra I -
**Reiny**, Wednesday, September 5, 2012 at 11:10pm
To 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 11:11pm
Oh okay, i see thank you!

## Answer This Question

## 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 ...
- Maths, multiplicative inverse - Show that -3 is a multiplicative inverse of 17 ...
- Multiplicative inverse - Angelo says that if you know one unit rate in a ...
- 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
- Algebra - Let p(x)=2x^3-113 and let q be the inverse of p. Find q(137). Please ...
- math help - Can someone explain to me the following step by step , i 've looked ...
- Algebra - Let p(x)=2x^3-113 and let q be the inverse of p. Find q(137). Please ...

More Related Questions