5x+2,x=7 can u explain this to me

Mathematics

2 answers:

oee [108]3 years ago

6 0

So basically x is equal to 7. That means that you need to plug 7 in for x. It should look like this: 5(7) +2. You can then plug that into your calculator in order to get 37!

I really hope that helped you understand!!

nikitadnepr [17]3 years ago

3 0

You have to substitute the x so since x=7 you have to do 5x7 which is 35 then you add the 2 making 37. Just tell me if you have any questions

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When a ferry boat is on open water, it travels at a constant speed. A ferry boat traveled 4 miles in 10 minutes. Complete the eq

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The equation is: $y=0.4x$

The relationship between the time in minutes, t, and the distance traveled in miles, d is a straight line, as shown in attached graph.

Step-by-step explanation:

As boat travels at constant speed.

So, if ferry boat travels 4 miles in 10 minutes. It means it would complete 24 miles in one hour.

And in 1 minute, 0.4 miles will be completed.

So, the equation becomes

$y=0.4x$

As the slope intercept form is $y=mx+c$

So, $m=0.4$ is the slope

The relationship between the time in minutes, t, and the distance traveled in miles, d is a straight line i.e. linear.

The graph is also attached which indicates that relationship between the time in minutes, t, and the distance traveled in miles, d is a straight line i.e. linear.

Keywords: speed, time, graph

Learn more about speed and time from brainly.com/question/1969153

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