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svet-max [94.6K]
3 years ago
15

If the ratio of two numbers is 5:2, whaat is the ratio to their sum to their difference?

Mathematics
1 answer:
Readme [11.4K]3 years ago
5 0

Let the numbers be x and y

5 + 2 = 7

It implies that,

x :y = 5:2

So, it also says that

x + y = 5 + 2 \\ x + y = 7

The difference is

5 - 2 = 3

So, last ratio is

<h3>7:3</h3>

<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>

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Yesterdays afternoon temperature was 21 °F. It plunged overnight to -3 °F. How many degrees did the temperature drop?
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2 years ago
Describe the circle given by the equation (x − 7)^2 + (y − 8)^2 = 9.
matrenka [14]
<h2>The circle (x − 7)² + (y − 8)² = 9 is a circle with center (7,8) and radius is 3</h2>

Step-by-step explanation:

Equation of circle with (h,k) as center and radius r is given by,

          (x-h)²+(y-k)² = r²

Here we need to describe the circle given by the equation (x − 7)² + (y − 8)² = 9

Changing equation to  (x-h)²+(y-k)² = r² form

               (x − 7)² + (y − 8)² = 9

                (x − 7)² + (y − 8)² = 3²

So, h = 7 ,  k = 8 and r = 3

Center is (7,8) and radius is 3

The circle (x − 7)² + (y − 8)² = 9 is a circle with center (7,8) and radius is 3

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