MathWizard likes to play a fun number trick on her friends. She tells them to think of a number. She then tells them to subtract their number from 2 and multiply the result by 5. To this product she tells them to add half the difference when 24 is subtracted from 12 times their original number.
(a) If I use the number 8 and follow MathWizard's steps, what number will I get?
MathWizard likes to play a fun number trick on her friends. She tells them to think of a number. She then tells them to subtract their number from 2 and multiply the result by 5. To this product she tells them to add half the difference when 24 is subtracted from 12 times their original number.
(a) If I use the number 8 and follow MathWizard's steps, what number will I get?
Mmmmmm....that's a lot of stuff..LOL!!!
2 - 8 = - 6
-6 * 5 = -30
" half the difference when 24 is subtracted from 12 times their original number." translates to
(1/2) ( 8 * 12 - 24 ] = (1/2) [ 96 - 24 ] = (1/2)(72) = 36
So
-30 + 36 =
6