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3 years ago

10. Read the following word problem, then choose which linear equation models the problem.

Mathematics

1 answer:

coldgirl [10]3 years ago

8 0

Answer:

D. ( 2w+6). (w)

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Ther are four test scores 97,85,92,86. what is the mean median and mode?

Firdavs [7]

The mode is the score that occurs the most often and the median is the middle number when arranged in order.

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3 years ago

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Which formula can be used to describe the sequence below 27,9,3

Ierofanga [76]

Answer:

$a_n=27 \cdot (\frac{1}{3})^{n-1}$ .

Step-by-step explanation:

This is a geometric sequence that means there is a common ratio. That means there is a number you can multiply over and over to get the next term.

The first term is 27.

The second term is (1/3)(27)=9.

The third term is (1/3)(9)=3.

So the common ratio is 1/3.

That means you can keep multiplying by 1/3 to find the next term in the sequence.

The explicit form for a geometric sequence is $a_n=a_1 \cdot r^{n-1}$ where $a_1$ is the first term and $r$ is the common ratio.

We are given $a_1=27$ and $r=\frac{1}{3}$ .

So the explicit form for the given sequence is $a_n=27 \cdot (\frac{1}{3})^{n-1}$ .

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3 years ago

an estate valued at $196,344 is to be divided between two sons so that the older son receives three times as much as the younger

Aliun [14]

Answer:

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Step-by-step explanation:

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3 years ago

△HFM∼△PST

Elan Coil [88]

Did you ever get the answer?? ahh please help!

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4 years ago

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A company finds that its sales since the company started in 2000 can be modelled by the function s(t)=(20t^2+800t+300)/(8t^2+10t

uysha [10]

Solving the quadratic function, the sales are of 9 million in the years of 2000 and 2012.

<h3>What is a quadratic function?</h3>

A quadratic function is given according to the following rule:

$y = ax^2 + bx + c$

The solutions are:

$x_1 = \frac{-b + \sqrt{\Delta}}{2a}$

$x_2 = \frac{-b - \sqrt{\Delta}}{2a}$

In which:

$\Delta = b^2 - 4ac$

The number of sales(in millions of dollars), in t years after 2000, is modeled by the following function:

$S(t) = \frac{20t^2 + 800t + 300}{8t^2 + 10t + 100}$

The sales are of 9 million when S(t) = 9, hence:

$S(t) = \frac{20t^2 + 800t + 300}{8t^2 + 10t + 100}$

$9 = \frac{20t^2 + 800t + 300}{8t^2 + 10t + 100}$

$72t^2 + 90t + 900 = 20t^2 + 800t + 300$

$52t^2 - 710t + 600 = 0$

Which is a quadratic equation with coefficients a = 52, b = -710, c = 600, hence:

$\Delta = (-710)^2 - 4(52)(600) = 379300$

$x_1 = \frac{710 + \sqrt{379300}}{104} = 12.7$

$x_2 = \frac{710 - \sqrt{379300}}{104} = 0.91$

t is measured in years after 2000, the sales are of 9 million in the years of 2000 and 2012.

More can be learned about quadratic functions at brainly.com/question/24737967

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6 0

2 years ago