3 years ago

A gift card stores data using a black, magnetic stripe on the back of the card. Find the width w of the stripe.

Mathematics

1 answer:

Nat2105 [25]3 years ago

3 0

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NEED HELP WILL GIVE BRAINLIEST!

lozanna [386]

Answer: a=60

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Jika abcd adalah jajar genjang dengan koordinat titik A(-2,-1). B(3,-1) dan C (5,3) maka koordinat titik d adalah

icang [17]

1. D. (0,3)

2. B. 650

3. C. 780

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semoga membantu.

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2 years ago

A quantity x has cumulative distribution function p(x) = x − x2/4 for 0 ≤ x ≤ 2 and p(x) = 0 for x < 0 and p(x) = 1 for x &gt

34kurt

$F_X(x)=\begin{cases}0&\text{for }x2\end{cases}$

Recall that the PDF is given by the derivative of the CDF:

$f_X(x)=\dfrac{\mathrm dF_X(x)}{\mathrm dx}=\begin{cases}1-\dfrac x2\\\\0&\text{otherwise}\end{cases}$

The mean is given by

$\mathbb E[X]=\displaystyle\int_{-\infty}^\infty x\,f_X(x)\,\mathrm dx=\int_0^2\left(x-\dfrac{x^2}2\right)\,\mathrm dx=\frac23$

The median is the number $M$ such that $F_X(x)=\mathbb P(X\le M)=\dfrac12$ . We have

$F_X(M)=M-\dfrac{M^2}4=\dfrac12\implies M=2\pm\sqrt2$

but both roots can't be medians. As a matter of fact, the median must satisfy $0\le M\le2$ , so we take the solution with the negative root. So $M=2-\sqrt2$ is the median.

3 0

3 years ago

The radius of a circle is 3 inches . What is the circumference of the circle ?

Vlada [557]

Answer:

Option C

Step-by-step explanation:

Circumference of a circle is:

$C=2\pi r$