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3 years ago

11

Th e library fi ne for an overdue DVD is $2 for the fi rst day plus $0.25 for each additional day. How many days overdue is a DV

D if the fi ne is $3.25?

1 answer:

Mumz [18]3 years ago

6 0

The DVD is 6 days overdue

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Answer:

This graph is D undefined

Step-by-step explanation:

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vladimir1956 [14]

Option 1

The discriminant of given equation is 116

<em><u>Solution:</u></em>

We have to find the discriminant of given equation

<em><u>Given equation is:</u></em>

$f(x) = 4x^2+6x-5$

To find discriminant,

$4x^2+6x-5 = 0$

$\text {For a quadratic equation } a x^{2}+b x+c=0, \text { where } a \neq 0$

<em><u>Discriminant is given by:</u></em>

$D = b^2-4ac$

On comparing the given quadratic equation $4x^2+6x-5 = 0$ with general quadratic equation $ax^2+bx+c = 0$

a = 4

b = 6

c = -5

<em><u>Substituting in above formula,</u></em>

$D = 6^2-4(4)(-5)\\\\D = 36-16(-5)\\\\D = 36+80\\\\D = 116$

Thus discriminant of given equation is 116

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Step-by-step explanation:

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Step-by-step explanation:

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