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vlabodo [156]
3 years ago
5

In 1992, only 277 people owned cellphones in Metropolis. Each year, cell phone use has continuously grown by 66%. How many cellp

hone users were there in 2005?
Mathematics
1 answer:
Alenkasestr [34]3 years ago
6 0
I believe it would be 2,376.66 but due to rounding it should be 2,377
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Question is there below
emmainna [20.7K]

Answer:

-\frac{bc}{a^{2} }

Step-by-step explanation:

We are given f(x)=ax^{2} +bx+c, \alpha and \beta are zeros of the function. We can use the sum and product of roots. You may have come across these equations before ↓

\alpha +\beta =-\frac{b}{a}

\alpha \beta =\frac{c}{a}

Since the coefficients are already in a, b, and c's, we do not need to sub in anything else.

Now, you are asked to evaluate \alpha ^{2} \beta +\alpha \beta ^{2}. The next step after finding the roots above ↑, is to factorise this equation to be solved.

\alpha ^{2} \beta +\alpha \beta ^{2}

= \alpha \beta (\alpha +\beta )

Sub in each respective roots,

= \frac{c}{a} (-\frac{b}{a} )

= -\frac{bc}{a^{2} }

Hope this helped! Ask me if there's any part of the working you don't understand :)

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Answer:

what is the question ? Volume or surface area???

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