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galina1969 [7]
4 years ago
13

6. Ed drives from Jefferson to Holden, a distance of 250 miles. He then travels on to

Mathematics
1 answer:
andreev551 [17]4 years ago
6 0

Answer:

The constant speed with Ed is travelling is 60 mile per hour

Step-by-step explanation:

Given as :

The distance cover to travel from Jefferson to Holden is (D1) 250 miles

The distance cover to travel from Holden to Paxton is (D2) 50 miles

Total time taken to complete entire journey = T = 5 hours

Let The constant speed of Ed = S mph

Time = \frac{Distance}{Speed}

Or, Time = \frac{D1}{S}  + \frac{D2}{S}

Or, 5 hour =  \frac{250}{S}  + \frac{50}{S}

Or, 5 × S = 250 + 50

So,  5 × S = 300

∴           S = \frac{300}{5}

I.e         S = 60 mph

Hence , The constant speed with Ed is travelling is 60 mile per hour Answer

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Desarrollar por el metodo de reduccion: 1. si: { 3x+ 2y = 26 { 5x - y = 26 hallar: e= x +y
Ahat [919]

We got the value of e=\frac{78}{7} by solving the given equations 3x+2y=26 and 5x+y=26 by reduction method.

<h2>What is reduction method?</h2>

The reduction or elimination approach includes using arithmetic operations between equations to produce equivalent equations with fewer unknowns that are simpler to analyze and evaluate.

Given equations are

3x+2y=26 .........(1)

5x+y=26 ...........(2)

We need to find the value of e=x+y

Simplifying the given equation (2) and we get

5x+y=26\\\Rightarrow y=26-5x................(3)

Now, substitute the equation (3) in equation (1) and we get

3x+2(26-5x)=26\\\Rightarrow 3x+52-10x=26\\\Rightarrow -7x+52=26\\\Rightarrow -7x=26-52\\\Rightarrow -7x=-26\\\Rightarrow x=\frac{26}{7}

Substitute the value of x in equation (3), we get

y=26-5\frac{26}{7} \\\Rightarrow y=26-\frac{110}{7}\\\Rightarrow y=\frac{162-110}{7}\\\Rightarrow y=\frac{52}{7}\\

Now adding the values of x and y, we get

\therefore e=\frac{26}{7}+\frac{52}{7}\\\Rightarrow e=-{[\frac{26+52}{7}]\\\Rightarrow e={[\frac{78}{7}]

Therefore, the value of e=\frac{78}{7}.

To learn more about reduction method from the below link:

brainly.com/question/13107448

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2 years ago
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A market survey shows that half the owners of Sorey State Boogie Boards became disenchanted with the product and switched to C&a
OlgaM077 [116]

Answer:

\left[\begin{array}{ccc}\dfrac{1}{2} &\dfrac{1}{2}\\\\\dfrac{1}{4}&\dfrac{3}{4}\end{array}\right]

Step-by-step explanation:

Let 1 = Sorey State, and 2 = C&T

Half the owners of Sorey State Boogie Boards became disenchanted with the product and switched to C&T Super Professional Boards the next surf season.

  • This means half moved from State 1 to State 2.

Three quarters of the C&T Boogie Board users remained loyal to C&T, while the rest switched to Sorey State.

  • The rest (1-\frac{3}{4}= \frac{1}{4}) moved from State 2 to State 1.

The Markov Transition Matrix is presented below:

\left\begin{array}{ccc}\\\\\\$Sorey State&1\\\\C\&T&2\end{array}\right\left[\begin{array}{ccc}$Sorey State&C\&T\\1&2\\------&------\\\dfrac{1}{2} &\dfrac{1}{2}\\\\\dfrac{1}{4}&\dfrac{3}{4}\end{array}\right]

The above is presented for clarity sake. The transition matrix is:

\left[\begin{array}{ccc}\dfrac{1}{2} &\dfrac{1}{2}\\\\\dfrac{1}{4}&\dfrac{3}{4}\end{array}\right]

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Answer: Simplified = 4n^2

Step-by-step explanation: the 8n and -8n cancel each other out.

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Solve this equation for x. (x+4) (x-2)=0
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Answer to 11x -5 (7+5)
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Step-by-step explanation:

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