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Marta_Voda [28]
1 year ago
15

Can someone help me with this question

Mathematics
1 answer:
olga2289 [7]1 year ago
6 0

Answer: \displaystyle d=3\sqrt{5}

Step-by-step explanation:

     First, we will find the coordinate placement of each point. See attached.

     Now, we can use the distance formula.

\displaystyle d=\sqrt{(x_{2}-x_{1})^2 +(y_{2}-y_{1})^2}

d=\sqrt{(6-3)^2 +(-3-3)^2}

d=\sqrt{(3)^2 +(-6)^2}

d=\sqrt{9+36}

d=\sqrt{45}

d=\sqrt{9*5}

\displaystyle d=3\sqrt{5}

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Step-by-step explanation:

Let the cost of 1 watch be  rs x then the cost of the other is rs 400 - x.

Let the sp be rs y.

So we have:

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y = (400 - x) - 0.05(400 - x)

y =  400 - x - 20 + 0.05x

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x = 190.

and y = 190 + 0.05*190 = 199.5.

So the total selling price = 2 * 199.5 = rs 399

So final loss is [ (400-399)/ 400] * 100

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