Question

Find the distance between cities C and D to the nearest tenth

Answer 1

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The formula to find the distance between two points ( x1 , y1 ) and ( x2 , y2) is:

`d=\sqrt[]{(x2-x1)^2+(y2-y1)^2}`

we need to find the distance between C and D

first, find the coordinates of the points

The coordinates of the point C = ( 3 , 6 )

the coordinates of the point D = ( 6 , 9 )

then use the formula of the distance:

`d_(CD)=\sqrt[]{(6-3)^2+(9-6)^2}=\sqrt[]{3^2+3^2}=\sqrt[]{9+9}=\sqrt[]{18}=4.2426`

so, the distance between C and D to the nearest tenth = 4.2

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