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sweet [91]
3 years ago
6

in the school library 52% of the books are paperback if there are 2650 books in library how many of them are not paperback to th

e nearest whole number
Mathematics
1 answer:
wlad13 [49]3 years ago
3 0

i will use proportions for this.

 x          52

------- = --------

2650    100

Cross multiply and u get 1378.

Hope it helps. :)

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Answer:

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Step-by-step explanation:

The equation will have one solution when the discriminant is zero.

In standard form, the equation is ...

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The discriminant of the equation ax^2+bx+c=0 is  ...

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so the discriminant of your equation is ...

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Any pair of values of 'a' and 'c' that have a product of -25 will satisfy the requirement. As you state, one possible pair is a = 5 and c = -5. Putting these values into the given equation makes it ...

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_____

<em>Additional comment</em>

Your problem statement does not require that 'a' be non-zero. If <em>a=0</em>, then the equation will have one real solution for <em>any value of c</em>.

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