carcay
the answer in -27 easy :)
2 Answers
dawg1fan
8.1/-.3 if you rationalize the denominator you get 81/-3 you can do this because the one number you can multiply anything by and not change it is 1 which can take on many forms. the one we want to use for this is 10/10 because when we multiply 8.1/-.3 with 10/10 we get 81/-3 since a +/- = - and 81/3=27 then our answer is -27 to prove this to yourself take a calculator and plug in both 8.1/-.3 and 81/-3 you will see that you get the same answer in both cases
| 13 years ago. Rating: 2 | |
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