3 years ago

Jon has -8 dollars in his account then adds 12 dollars, how much does he have now?

1 answer:

4 0

-8 in account
adds 12 dollars

-8 (+12) = 4

Jon now has 4 dollars in his account

i don't know how to explain the zero part well, but it is like the place where your bank have to be in order to not have debt

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2 years ago

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3 years ago

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$\bf \qquad \qquad \textit{direct proportional variation} \\\\ \textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby \begin{array}{llll} k=constant\ of\\ \qquad variation \end{array} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ 4x+5y=0\implies 5y=-4x\implies y=-\cfrac{4}{5}x\qquad \boxed{k=-\cfrac{4}{5}}\qquad \text{\Large\checkmark}$