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3 years ago

12

Brian bought a tablet that was discountedby 15%. the tablet normally sells for y dollars. eith tax, Brian paid $309. if the tax

was $20, write and solve an equation that can be used to find the original cost of the tablet.

1 answer:

sertanlavr [38]3 years ago

3 0

309-20 x .15
but yeah

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3 years ago

What is the solution to -x2 + 5x - 3

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Given that the equation is $-x^2+5x-3=0$

We need to determine the solution of the equation.

The solution of the equation can be determined using the quadratic formula.

The quadratic formula is given by

$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

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Simplifying, we get,

$x=\frac{-5\pm \sqrt{25-12}}{-2}$

Simplifying the terms within the root, we get,

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Thus, the roots of the equation are $x=\frac{-5+ \sqrt{13}}{-2}$ and $x=\frac{-5- \sqrt{13}}{-2}$

Taking out the negative sign, we get,

$x=\frac{-(5- \sqrt{13})}{-2}$ and $x=\frac{-(5+ \sqrt{13})}{-2}$

Cancelling the negative sign, we get,

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4 years ago

Can two lines that have the same slope and Y intercept have no solution

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Answer:

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Step-by-step explanation:

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__

MAYBE:

If those two lines are part of a larger system that includes parallel lines (or non-intersecting curves), then that larger system will have <em>no solution</em>.

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4 years ago