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Ainat [17]
4 years ago
14

Please help me answer this question????

Mathematics
1 answer:
Alchen [17]4 years ago
7 0

Elimination method means you're essentially. "subtracting" one equation from another.

x-y=17

- x+y=-1

---------

-2y=18

Now we'll solve x+y=-1 and -2y=18 separately.

-2y=18

Divide both sides by -2.

y=-9

x-9=-1

Add 9 to both sides.

x=8

The solutions are x=8 and y=-9, or (8,-9).

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4 years ago
A circular target is divided into four rings that have equal areas. If the radius of the target is 24cm, find the radius of the
MAVERICK [17]

THE AREA OF THE RING WHICH IS INSIDE CIRCULAR TARGET IS 12CM.

Step-by-step explanation:

A circular target which is divided into four rings of equal areas as given in the information

The area of the circular target is

Area = \pi * R².

As per the given data radius of the target 'R' is 24cm,

Area of circular target = \pi * 24²

=>  576 \pi.

let us consider radius of ring equals to 'r',

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=> Area of ring = (\pi * 576) / 4

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Now let us consider area of the small ring inside circular target

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Therefore radius of ring which is inside circular target is 12 cm.

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