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Y_Kistochka [10]
3 years ago
5

a bookseller bought 100 books at rs 40 each 20book were stolen and sold the remaining book at 6% loss. find the seling price of

each book​
Mathematics
1 answer:
creativ13 [48]3 years ago
7 0

Answer:

45.60

Step-by-step explanation:

he spent 80 × 30 = rs 2400

5 %loss means

sp= 2400 - 2400 × 0. 05

= 2280 for all remaining books so each book was sold at

2280/ 50 = 45.60

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Answer:

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babunello [35]

Answer:

y'' =12x^2 -72=0

And solving we got:

x=\pm \sqrt{\frac{72}{12}} =\pm \sqrt{6}

We can find the sings of the second derivate on the following intervals:

(-\infty Concave up

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x=\sqrt{6}, y=-180 inflection point

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Step-by-step explanation:

For this case we have the following function:

y= x^4 -36x^2

We can find the first derivate and we got:

y' = 4x^3 -72x

In order to find the concavity we can find the second derivate and we got:

y'' = 12x^2 -72

We can set up this derivate equal to 0 and we got:

y'' =12x^2 -72=0

And solving we got:

x=\pm \sqrt{\frac{72}{12}} =\pm \sqrt{6}

We can find the sings of the second derivate on the following intervals:

(-\infty Concave up

x=-\sqrt{6}, y =-180 inflection point

(-\sqrt{6} Concave down

x=\sqrt{6}, y=-180 inflection point

(\sqrt{6} Concave up

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Answer:

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Step-by-step explanation:


7 0
3 years ago
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