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3 years ago

5

a television regulary cost $180 but it is on sale for 40% off this is a 5% sales tax on the sale price how much does the televei

sion cost after the discount and sales tax

1 answer:

nadya68 [22]3 years ago

8 0

If it is 40% off then it is 100-40 = 60% of original price. So we do 180$ * . 6 = $108 before tax. To add on tax we do: 100 + 5 = 105% of that price.

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Solution to the question:

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The value of 'k' in the quadratic Equation $4x^{2}+kx+4=0$ having one rational solution is k is 8.

<h3>What is a Quadratic Equation?</h3>

Quadratic equations are the polynomial equations of degree 2 in one variable of the type $f(x) = ax^{2} + bx + c = 0$ where a, b, c, ∈ R and a ≠ 0.
The standard form of a quadratic equation is $ax^{2} + bx + c = 0$ .

Here, the given equation is $4x^{2}+kx+4=0$

By comparing the given equation with the standard form of the quadratic equation we get,

a = 4

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The given quadratic is having one rational solution, which means $b^{2} -4ac=0$

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Therefore, the value of k is 8.

Learn more about the quadratic equation is brainly.com/question/8649555

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