What is the multiplicative inverse for -0.4?

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What is the multiplicative inverse for -0.4?

Please provide explanation. My guess 1/-0.4 but I think only integers count as fractions?

2007-10-31 13:15:28 · 3 answers · asked by Selene 1 in Science & Mathematics ➔ Mathematics

3 answers

[05]
1/-0.4=-2.5

2007-10-31 13:20:42 · answer #1 · answered by alpha 7 · 1⤊ 0⤋

Your answer is right but you should write it as a fraction or decimal number.

-0.4 = -4/10

So the multiplicative inverse is -10/4 = -5/2
-2 1/2 if you want a proper fraction. -2.5 if you want a decimal.

2007-10-31 20:22:28 · answer #2 · answered by Demiurge42 7 · 0⤊ 0⤋

You are exactly right as to the inverse. The multiplicitive inverse is just what you must multiply a number by to get 1, which is 1 divided by the number.

2007-10-31 20:21:22 · answer #3 · answered by Mr. Chemistry 2 · 0⤊ 0⤋