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2 years ago

The iPhone 6 costs $350 today. If it value depreciates at the rate of 30% per year when will it be

Mathematics

1 answer:

DIA [1.3K]2 years ago

5 0

And its 6 600 and 202 and add 100 which means it will be 12 THATS your answer

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Which of these equations is shown on this graph?

AlekseyPX

<em><u>should be G : y=2x+1</u></em>

4 0

2 years ago

Read 2 more answers

X - 3y = 6 and x - 3y = 9

Kruka [31]

The answer is that there are no solutions to the equations. They are parallel to each other and never cross. They can also be called inconsistent

6 0

3 years ago

A random variable X follows the uniform distribution with a lower limit of 670 and an upper limit of 750.a. Calculate the mean a

DENIUS [597]

You can compute both the mean and second moment directly using the density function; in this case, it's

$f_X(x)=\begin{cases}\frac1{750-670}=\frac1{80}&\text{for }670\le x\le750\\0&\text{otherwise}\end{cases}$

Then the mean (first moment) is

$E[X]=\displaystyle\int_{-\infty}^\infty x\,f_X(x)\,\mathrm dx=\frac1{80}\int_{670}^{750}x\,\mathrm dx=710$

and the second moment is

$E[X^2]=\displaystyle\int_{-\infty}^\infty x^2\,f_X(x)\,\mathrm dx=\frac1{80}\int_{670}^{750}x^2\,\mathrm dx=\frac{1,513,900}3$

The second moment is useful in finding the variance, which is given by

$V[X]=E[(X-E[X])^2]=E[X^2]-E[X]^2=\dfrac{1,513,900}3-710^2=\dfrac{1600}3$

You get the standard deviation by taking the square root of the variance, and so

$\sqrt{V[X]}=\sqrt{\dfrac{1600}3}\approx23.09$

8 0

3 years ago

Last week Sally had thirty-nine dollars. She washed cars over the weekend and now has sixty-four dollars. Write an equation that

mafiozo [28]

Answer:

64= 39+x

Step-by-step explanation:

x represents the unknown or in this case the money made to get to 64

39 is what she started with and 64 is the final total

4 0

2 years ago

If gh-f=g-h, which of the following gives g in terms of the other variables?

JulsSmile [24]

The value of g in terms of other variables is $g=\frac{f+h}{h-1}$

Given the expression;

gh-f=g-h

We are to express g in terms of other variables as shown;

gh-f=g-h

Collect the like terms

gh - g = f + h

Factor out g

g(h - 1) = f + h

Divide both sides by h-1

$g=\frac{f+h}{h-1}$

Hence the value of g in terms of other variables is $g=\frac{f+h}{h-1}$

Learn more here: brainly.com/question/21406377

5 0

2 years ago