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goldenfox [79]
2 years ago
9

In the given figure, O is centre of the circle. Find the value of x and y? ​

Mathematics
1 answer:
Effectus [21]2 years ago
4 0

Answer:

The value of x = 13cm and y = 12cm.

Step-by-step explanation:

P is the exterior point to the circle with centre O

Radius = 5cm

Length of the tangent = 12 cm

Distance between the point and centre of the circle = x cm

We know that

The angle between the radius of the circle and the tangent at the point of contact is 90°

By Pythagoras Theorem

Hypotenuse² = Side²+Side²

⇛x² = 12²+5²

⇛x² = 144+25

⇛x² = 169

⇛x² = 13²

<h3>⇛x = 13 cm</h3>

We know that

The lengths of tangents drawn from the exterior point to the circle are equal.

<h3>y = 12 cm</h3>

<u>Answer</u><u>:</u> The value of x=13cm and y = 12cm.

<u>also</u><u> read</u><u> similar</u><u> questions</u><u>:</u> in the given figure, O and O' are centre of two circles and the circles intersect each other at points B and c. If AOCD is a straight line and /_ AOB =110, find...

brainly.com/question/957506?referrer

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This question illustrates how bidding dishonestly can end up hurting the cheater.
viktelen [127]

I've had this same question before, here's my answer. ( If you're wondering why I did this so quickly is becuase I did mine digitally, not on paper.)

AND WE APPLY THE LONE DIVIDER METHOD, STEP ONE,

THE DIVIDER DIVIDES THE ITEM INTO N PIECES,

WHICH WE'LL LABEL S SUB 1 THROUGH S SUB N,

WHERE EACH PIECE HAS THE SAME VALUE BASED

UPON THE VALUE SYSTEM OF THE DIVIDER.

TWO, EACH OF THE CHOOSERS WILL SEPARATELY LIST THEIR PIECES

THEY CONSIDER TO BE A FAIR SHARE.

THIS IS CALLED THE DECLARATION, OR BID.

THREE, THE LISTS ARE EXAMINED, AND THERE ARE TWO POSSIBILITIES:

"A", IF IT IS POSSIBLE TO GIVE EACH PARTY A PIECE

THEY DECLARED, THEN DO SO,

AND THE DIVIDER GETS THE REMAINING PIECE.

B, IF TWO OR MORE PARTIES WANT THE SAME PIECES AND NO OTHERS,

MEANING WE HAVE A STANDOFF,

THEN GIVE A NON-CONTESTED PIECE TO THE DIVIDER,

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AND REPEAT THE ENTIRE PROCEDURE WITH THE REMAINING PARTIES.

IF THERE ARE TWO PARTIES,

THEN WE USE THE DIVIDER-CHOOSER METHOD.

SO THIS QUESTION WILL ILLUSTRATE HOW BIDDING DISHONESTLY,

OR BEING GREEDY, CAN END UP HURTING THE CHEATER.

WE'LL FIRST TAKE A LOOK AT THIS PROBLEM WHERE EVERYONE

IS HONEST, AND THEN WHEN GREEDY IS DISHONEST.

SO FOUR PARTNERS ARE DIVIDING A $1 MILLION PROPERTY

USING THE LONE DIVIDER METHOD.

USING A MAP, DANNY DIVIDES THE PROPERTY INTO 4 PARCELS,

S SUB 1 THROUGH S SUB 4, AS WE SEE IN THIS FIRST ROW.

THE TABLE SHOWS THE VALUE OF THE 4 PARCELS

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SO AGAIN, NOTICE BECAUSE DANNY IS THE DIVIDER,

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THIS WOULD BE THE FAIR SHARE FOR EACH PLAYER, OR PARTNER.

FIRST, ASSUMING ALL PLAYERS BID HONESTLY,

WE WANT TO DETERMINE WHICH PIECE GREEDY WILL RECEIVE,

BUT WE'LL HAVE TO GO THROUGH THE PROCESS

TO DETERMINE WHICH PIECE EACH PARTNER RECEIVES.

SO NOW THAT DANNY HAS DIVIDED UP THE PROPERTIES,

EACH PARTNER NOW MAKES THEIR DECLARATION, OR BID,

WHICH WOULD BE THE PROPERTIES THEY VALUE AT $250,000 OR MORE.

SO NOTICE THAT BREANNA WOULD ONLY BID S SUB 1,

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WHEN HE IS HONEST, WOULD BID S SUB 1, S SUB 2, AND S SUB 3.

SO NOW NOTICE THAT S SUB 3 AND S SUB 4 ARE NON-CONTESTED,

SO DANNY CAN RECEIVE S SUB 4, AND GREEDY CAN RECEIVE S SUB 3.

NOTICE GREEDY RECEIVES S SUB 3,

WHICH HE OR SHE VALUES AT $320,000.

SO AGAIN, GREEDY RECEIVES S SUB 3, DANNY RECEIVES S SUB 4,

SO THAT LEAVES S SUB 1 AND S SUB 2 FOR BREANNA AND CARLOS.

WE'LL NOTICE NOW CARLOS CAN RECEIVE S SUB 2,

AND BREANNA CAN RECEIVE S SUB 1.

NOTICE HERE EACH PERSON RECEIVES THEIR FAIR SHARE.

SO AGAIN, BREANNA RECEIVED S SUB 1,

AND CARLOS RECEIVED S SUB 2.

NOW LET'S LOOK AT THE SAME PROBLEM,

BUT WE'LL ASSUME THAT BREANNA AND CARLOS BID HONESTLY,

BUT GREEDY DECIDES TO ONLY BID FOR S SUB 1,

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SO AGAIN, DANNY IS THE DIVIDER,

BREANNA AND CARLOS' DECLARATIONS OR BIDS WILL STILL BE HONEST.

SO AGAIN, BREANNA WILL ONLY BID FOR S SUB 1,

CARLOS WILL BID FOR S SUB 1 AND S SUB 2,

AND NOW GREEDY, BEING DISHONEST, IS ONLY GOING TO BID

FOR S SUB 1, NOT FOR S SUB 2 AND S SUB 3.

AND BY DOING SO, HE THINKS HE WILL GET S SUB 1.

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BEFORE WE FIGURE THAT OUT THOUGH, AGAIN,

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