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timofeeve [1]
3 years ago
6

Midpoints B is the midpoint of AC , find x.

Mathematics
2 answers:
Oksana_A [137]3 years ago
5 0
<h3><u>Given</u>:- </h3>

\red{➤}\:\sf AB = 5x

\red{➤}\:\sf BC = 3x+4

\\

<h3><u>To Find:-</u></h3>

\orange{☛}\:\sf Value  \:of  \:x

\\

<h3><u>Solution</u>:-</h3>

Since B is midpoint of AC, therefore -

\\\quad\quad\quad\quad\sf AB = BC

\begin{gathered}\\\quad\longrightarrow\quad \sf 5x = 3x+4\quad\quad ( Putting \:Value) \\\end{gathered}

\begin{gathered}\\\quad\longrightarrow\quad\sf 5x-3x =4 \\\end{gathered}

\begin{gathered}\\\quad\longrightarrow\quad\sf 2x =4 \\\end{gathered}

\begin{gathered}\\\quad\longrightarrow\quad\sf x =\frac{4}{2}\\\end{gathered}

\begin{gathered}\\\quad\longrightarrow\quad\boxed{\sf {x=2 }}\\\end{gathered}

PolarNik [594]3 years ago
4 0

B is the midpoint which means both sides are equal to each other:

5x = 3x + 4

Subtract 3x from both sides

2x = 4

Divide both sides by 2

X = 2

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Answer: a) 4.6798, and b) 19.8%.

Step-by-step explanation:

Since we have given that

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As we know the poisson process, we get that

P(n)=\dfrac{(\lambda t)^n\times e^{-\lambda t}}{n!}\\\\P(n=0)=0.125=\dfrac{(\lambda \times 14)^0\times e^{-14\lambda}}{0!}\\\\0.125=e^{-14\lambda}\\\\\ln 0.125=-14\lambda\\\\-2.079=-14\lambda\\\\\lambda=\dfrac{2.079}{14}\\\\0.1485=\lambda

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P(n=1) is given by

=\dfrac{(0.1485\times 14)^1\times e^{-0.1485\times 14}}{1!}\\\\=0.2599

Hence, our required probability is 0.2599.

a. Approximate the number of these intervals in which exactly one car arrives

Number of these intervals in which exactly one car arrives is given by

0.2599\times 18=4.6798

We will find the traffic flow q such that

P(0)=e^{\frac{-qt}{3600}}\\\\0.125=e^{\frac{-18q}{3600}}\\\\0.125=e^{-0.005q}\\\\\ln 0.125=-0.005q\\\\-2.079=-0.005q\\\\q=\dfrac{-2.079}{-0.005}=415.88\ veh/hr

b. Estimate the percentage of time headways that will be 14 seconds or greater.

so, it becomes,

P(h\geq 14)=e^{\frac{-qt}{3600}}\\\\P(h\geq 14)=e^{\frac{-415.88\times 14}{3600}}\\\\P(h\geq 14)=0.198\\\\P(h\geq 14)=19.8\%

Hence, a) 4.6798, and b) 19.8%.

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Answer:

x = 11

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Step-by-step explanation:

We know that opposite angles (or vertical angles) are equal.

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8x - 8x + 7 = 9x - 8x - 4

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