Question

If a number is multiplied by its
multiplicative identity it gives the
result 3/8 .Then what is the
unknown number?​

Answer 1

Answer:

The multiplicative inverse of a number is the number with which if you multiply the number you get the result as 1 .

You can say that the multiplicative inverse of a number is just a reciprocal of the number.

What is reciprocal of a number?

Well reciprocal of a number is that number which is obtained by dividing the number by 1 .

For example:

Reciprocal of x is 1x

For a fraction actually the denominators and numerators are interchanged.

For example:

Reciprocal of 49 becomes 94 on dividing 1 by that number.

So guess what.

The reciprocal of 38 is called the multiplicative inverse.

So reciprocal= 83 .

Lets verify .

Take a number x such that x is the multiplicative inverse of 38

Multiplying x with 38 yields 1.

⟹x∗38=1

⟹x=83

Thus your answer:- 83

Have a nice day.

Answer 2

Step-by-step explanation:

Let 3/8 be called as a.

Now by definition of multiplicative inverse “Any number multiplied by reciprocal of that number will give you 1, this is called multiplicative inverse”

Therefore a*a^-1. { where a^-1 is 8/3 which is reciprocaloof 3/8}

(3/8)*(8/3) which equals to 1.

But in this questionwwe only want a^-1 which will be (8/3).