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Makovka662 [10]
3 years ago
8

A knife and fork cost €2.40.the knife costs two euros more than the fork how much is the fork

Mathematics
1 answer:
Greeley [361]3 years ago
8 0

Answer:

f = € 0.20

k = € 2.20

Step-by-step explanation:

k + f = 2.40

k = 2 + f

(2 + f) + f = 2.40

2f = 2.40 - 2

2f = 0.40

f = € 0.20

k = 2 + 0.20 = € 2.20

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Answer:

There are no real solutions.

Step-by-step explanation:

There are 3 options.

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Another way to see this, is if the determinant:

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Another way to see this is if the determinant:

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Another way to see this is if the determinant:

b^2 - 4*a*c

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Now that we know this, let's look at the graph.

We can see that the vertex is below the x-axis, and the arms of the graph go downwards. So the arms will never intersect the x-axis (and neither the vertex).

So the graph does not intersect the x-axis at any point, which means that there are no real solutions for the quadratic equation.

The correct answer would be "none"

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