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3 years ago

7

Nam has a beginning balance of $815 in her checking account. She writes a check for $210 and has a debit transaction of $525. Wh

at is her new balance?
$125

$80

$1550

$120

1 answer:

shepuryov [24]3 years ago

3 0

The answer is 80 dollars

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Answer:

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Explanation:

We have been given with the quadratic equation $x^2-7x-6=0$

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$D=b^{2}-4ac$

and after that to find the variable suppose x we have the formula

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And general quadratic equation is

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On comparing the given quadratic equation with genral quadratic equation we will have values

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After substituting these values in the formula we will get

$D=(-7)^2-4(1)(-6)={73}$

After substituting in the formula to find x we will get

$\frac{-(-7)\pm\sqrt{73}} {2}= \frac{7\pm\sqrt{73}} {2}$

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