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Nesterboy [21]
2 years ago
6

What is the value of b2-4ac for the following equation? 5x2+7x=6​

Mathematics
1 answer:
poizon [28]2 years ago
8 0

Answer:

169

Step-by-step explanation:

Given data

The function is

5x^2+7x=6​

rearrange

5x2+7x-6=0

From the above expression, we can see that

a=​5

b=7

c=-6

Substitute into the expression b^2-4ac

=7^2-4*5*-6

= 49-(-120)

=49+120

=169

Hence the answer is 169

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Answer:

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Step-by-step explanation:

let the jobs be x and y, so that

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substitute x=32-y for x in equation 2 we have

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open bracket we have

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2y=40

divide both sides by 2 we have

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subtitute y=10 for y in equation 1 to find x

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x=32-10

x=22

x=22 hours

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