Solve for x. x^2 + 4x + 4 = 8 help me out i’ll give you the brainliest! :)

Mathematics

1 answer:

irga5000 [103]3 years ago

4 0

-4.828, 0.828 I hope this helps

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Five years ago the population of the UK was 64.1 million. It has grown by 400 000. What is the population of the UK now?

telo118 [61]

64.5 million add 64100000+ 400000

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3 years ago

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Keats Library purchases a number of new books, all in the category of biography; the library does not acquire any other books. W

PtichkaEL [24]

Answer:

$\large \boxed{87.5 \, \%}$

Step-by-step explanation:

Let x = the original number of books

Then 0.375x = the total number of biographies

and 0.20 x = the original number of biographies

$\text{Percent increase} = \dfrac{\text{ New number - Old number }}{\text{Old number }} \times 100\, \%\\\\= \dfrac{0.375x - 0.20x}{0.20x} \times 100\, \% = \dfrac{0.175x}{0.20x} \times 100\, \% = 0.875 \times 100\, \% = \mathbf{87.5 \, \%}\\\\\text{The number of biographies has increased by $\large \boxed{\mathbf{87.5 \, \%}}$}$