Question

is 0.4 is the multiplicative inverse of 2 2/4 why or why no

Answer 1

Answer:

The answers are:

−

0.4

and

2.5

The inverse of 0.4 in the additive operation is that element (

a

) that added to 0.4 gives 0.

So:

0.4

+

a

=

0

⇒

a

=

−

0.4

The inverse of 0.4 in the multiplicative operation is that element (

a

) that multiplied to 0.4 gives 1.

So:

0.4

⋅

a

=

1

⇒

4

10

a

=

1

⇒

2

5

a

=

1

⇒

a

=

5

2

=

2.5

.

Step-by-step explanation:

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