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zloy xaker [14]
3 years ago
12

I need help on 9-10 , I will mark brainliest

Mathematics
2 answers:
ruslelena [56]3 years ago
8 0
Ben is farther from his home.
You can find out by comparing, from where they are at, during a certain hour.

For example, at 2 hours, Sally had drove 55 miles.

And at 2 hours on the graph, Ben seems to be at 125 miles.

So Ben drove faster than Sally during the first 2 hours.

You just have to keep comparing their miles at a certain hour.

Another example:

At 5 hours, Sally had driven 100 miles. And on the graph, Ben had driven 250 miles after 5 hours of driving. (You can tell because of the line touching the other line at the 250 mark)

Hope this helped! :)
horsena [70]3 years ago
7 0

i only know 10, sorry. but its 20.

hope this helps


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Certain circle can be represented by the following equation.
kirill115 [55]

Answer:

Center of the circle is (-9, -7)

Radius of the circle = 5 units

Step-by-step explanation:

Given question is incomplete: here is the complete question.

Certain circle can be represented by the following equation. x^2+y^2+18x+14y+105=0.

What is the center of this circle ?

What is the radius of this circle ?

Since equation of the circle has been given by the equation,

x² + y² + 18x + 14y + 105 = 0

Now we will convert this equation to the standard form of the circle.

x² + 18x + y² + 14y = -105

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[x² + 2(9)x + 9²] + [y² + 2(7)y + 7²] = 9² + 7² - 105

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(x + 9)² + (y + 7)² = 25

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By comparing this equation with the standard equation of the circle → (x - h)² + (y - k)² = r²

Center of the circle is (-9, -7) and radius of the circle is 5 units.

8 0
3 years ago
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