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2 years ago

Is it proportional or non proportional

Mathematics

1 answer:

natta225 [31]2 years ago

6 0

Answer:

proportional

Step-by-step explanation:

13/2=6.5

19.5/3=6.5

26/4=6.5

32.5/5=6.5

so if all equal the same they are proportional

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3 years ago

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3 years ago

Read 2 more answers

Use the grouping method to factor this polynomial. x^3+2x^2+7x+14

Eva8 [605]

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x3+2x2-7x-14

Factor out the greatest common factor from each group.

Tap for more steps...

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x2(x+2)-7(x+2)

Factor the polynomial by factoring out the greatest common factor,

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3 years ago

Let X be the time it takes for a person to choose a birthday gift, where X has an average value of 27 minutes. If the random var

jeka57 [31]

Answer:

The parameters of this exponential distribution is $\lambda$ = $\frac{1}{27}$ .

Step-by-step explanation:

We are given that the random variable X is known to be exponentially distributed and let X be the time it takes for a person to choose a birthday gift, where X has an average value of 27 minutes.

So, X = time it takes for a person to choose a birthday gift

The probability distribution function of exponential distribution is given by;

$f(x) = \lambda e^{-\lambda x} , x >0$ where, $\lambda$ = parameter of distribution.

Now, the mean of exponential distribution is = $\frac{1}{\lambda}$ which is given to us as average value of 27 minutes that means $\lambda = \frac{1}{27}$ .

So, X ~ Exp( $\lambda = \frac{1}{27}$ ) .

Therefore, the parameter of this exponential distribution is $\lambda$ .

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3 years ago