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3 years ago

13

A box contains 421 books. If your teacher orders 19 boxes of books, about how many books will arrive? Use estimation to find you

r answer. pls help !!!!!111!!

1 answer:

xz_007 [3.2K]3 years ago

6 0

Answer:

I'ma say 440 sorry if I'm wrong

Step-by-step explanation:

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Pierre stands on level ground at the point P, 5 metres from O.

GenaCL600 [577]

So hmm notice the picture below

thus $\bf \cfrac{4.24}{x}=\cfrac{2x+5}{2x}\implies 8.48x=2x^2+5x\implies 8.48x-5x=2x^2
\\\\\\
3.48x=2x^2\implies 0=2x^2-3.48x\implies 0=x(2x-3.48)
\\\\\\

\begin{cases}
0=x\\
----------\\
0=2x-3.48\\
3.48=2x\\\\
\cfrac{3.48}{2}=x\\\\
1.74=x
\end{cases}$

so, is clearly not 0, so it has to be 1.74

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