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3 years ago

100pts to answer this math (statistics/probability) question.

Mathematics

1 answer:

nalin [4]3 years ago

7 0

a = 8 - a train arrives at the station once every 8 minutes, so for any given 8 minute interval, a randomly selected train has uniform probability of arriving at the station at some point in this time.

f(x) = 1/8 - the area under the graph of f(x) must be equal to 1. This area corresponds to a rectangle with length a = 8 and height x such that 8x = 1. Solving for x gives 1/8.

P = 5/8 - this is equal to the area under the graph over the interval [0, 5], which is the area of a rectangle with length 5 and height 1/8.

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-10x+2=14x then 16x=

Ksivusya [100]

Answer:

4/3

Step-by-step explanation:

-10x + 2 = 14x

24x = 2

x = 2/24 or 1/12

16 x 1/12 = 16/12 or 4/3

3 0

3 years ago

Faces, edges and corners of star pls fast thankyou

aleksklad [387]

Answer:

I don't understand what your asking us to do.

Step-by-step explanation:

Can you rephrase it please.

3 0

3 years ago

Solve the equation z=2x+3 for x

san4es73 [151]

Answer:

z=2x+3

z-3=2x

x=z-3/2

7 0

3 years ago

Please help me and show your work!!

11Alexandr11 [23.1K]

$\bf \cfrac{\sqrt{250x^{16}}}{\sqrt{2x}}\qquad 
\begin{cases}
250=2\cdot 5\cdot 5\cdot 5\\
\qquad 2\cdot 5\cdot 5^2\\
x^{16}=x^{8\cdot 2}\\
\qquad (x^8)^2
\end{cases}\implies \cfrac{\sqrt{2\cdot 5\cdot 5^2\cdot (x^8)^2}}{\sqrt{2\cdot x}}$

$\bf \cfrac{5x^8\sqrt{2\cdot 5}}{\sqrt{2}\cdot \sqrt{x}}\implies \cfrac{5x^8\underline{\sqrt{2}}\cdot \sqrt{5}}{\underline{\sqrt{2}}\cdot \sqrt{x}}\implies \cfrac{5x^8\sqrt{5}}{\sqrt{x}}\impliedby 
\begin{array}{llll}
\textit{and rationalizing the}\\
\textit{denominator}
\end{array}$

$\bf \cfrac{5x^8\sqrt{5}}{\sqrt{x}}\cdot \cfrac{\sqrt{x}}{\sqrt{x}}\implies \cfrac{5x^8\sqrt{5}\cdot \sqrt{x}}{(\sqrt{x})^2}\implies \cfrac{5x^8\sqrt{5x}}{x}\implies 5x^8x^{-1}\sqrt{5x}
\\\\\\
5x^{8-1}\sqrt{5x}\implies 5x^7\sqrt{5x}$

4 0

3 years ago

14 POINTS PLEASE HELP WILL MARK BRAINLIEST NEED URGENTLY

liraira [26]

Using correlation coefficients, it is found that a coefficient of -1 represents a strong negative correlation.

<h3>What is a correlation coefficient?</h3>

It is an index that measures correlation between two variables, assuming values between -1 and 1.

If it is positive, the relation is positive, that is, they are direct proportional. If it is negative, they are inverse proportional.

If the absolute value of the correlation coefficient is greater than 0.6, the relationship is strong.

For this problem, we have a correlation coefficient of -1, hence it means that:

The relation is negative, as -1 is a negative number.

The relation is strong, as the absolute value of the coefficient is of 1, which is greater than 0.6.

More can be learned about correlation coefficients at brainly.com/question/25815006

#SPJ1

7 0

2 years ago