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Darya [45]
4 years ago
5

Write an equation for the number of points, y Enrique scores on the test when he answers x questions correctly.

Mathematics
2 answers:
kramer4 years ago
5 0
<span><u><em>Answer:</em></u>
1. 3x = y
2. 7x= y.
<span>
<u><em>Explanation:</em></u>
If x is the amount of points each question that is answered correctly received then the coefficient that x is multiplied by will be the amount for each test.

For the first equation we have 3 as the amount answered correctly time x the points each one is worth = total points y.

For the second equation we have 7 as the amount answered correctly time x the points each one is worth = total points y .


</span></span>
Blizzard [7]4 years ago
5 0

Answer with explanation:

→For, x correct answer number of points scored = y

For ,1 correct answer number of points scored=\frac{y}{x}

→The statement about the problem is

On his first geography test, Enrique answered 3 questions correctly. On his second test, Enrique answered 7 questions correctly.

Writing the statement in terms of equation

In First test

For, three correct answer number of points scored ,=\frac{3 y}{x}

As, it is given that number of correct answers is 3, and number of question is x, so total number of incorrect answer will be = x-3,

For, incorrect answer points scored will be =0

In Second test

For, seven correct answer number of points scored ,=\frac{7 y}{x}

As, it is given that number of correct answers is 7, and number of question is x, so total number of incorrect answer will be = x-7,

For, incorrect answer points scored will be =0

So, transforming the statement in terms of equation

Total number of points

   \frac{3y}{x}+\frac{7y}{x}=\frac{10y}{x}

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6.009,6.09,6.5,6.5071

Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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2 years ago
. Imagine a game of 3 players where exactly one player wins in the end and all players have equal chances of being the winner. T
lbvjy [14]

Answer:

5/9

Step-by-step explanation:

Number of players = 3

number of times game is repeated = 4

P( any person wins a game ) = 1/3

P ( any person does not win a game ) = 1 - 1/3 = 2/3

P ( any person wins no game in 4 attempts ) = ( 2/3 )^4 = 16/81

<em>Note : each player has equal chance of winning </em>

<u>Find the probability that there is at least one person who wins no games </u>

lets represent the probability of each player not wining a game with alphabet A

A1 = player 1 wins no game

A2 = player 2 wins no game

A3 = players 3 wins no game

Applying the inclusion-exclusion formula

<em>P( A1 ∪ A2 U A3 )</em><em> = P(A1 ) + P(A2) + P(A3) - P( A1 ∩ A2 ) - P( A2 ∩ A3 ) - P( A1            ∩ A3 )  + P( A1 ∩ A2 ∩ A3 ) </em>

where

P( A1 ∩ A2 ) = P( A1 wins all games )

P ( A1 wins all games in 4 attempts ) = ( 1/3 )^4 = 1/81

P( A1 ∩ A2 ∩ A3 ) = P ( no players wins any game in 4 attempts ) = 0

Hence

P( A1 ∪ A2 U A3 ) = 16/81 + 16/81 + 16/81 - 1/81 - 1/81 - 1/81 - 0 = 5/9

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3 years ago
Last Wednesday, students could choose ham or turkey sandwiches for lunch. The cafeteria made 50 sandwiches in all, 5 of which we
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Answer:

90%

Step-by-step explanation:

50%×2 100%

5%×2 10%

45%×2 90%

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