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iren2701 [21]
3 years ago
7

The history museum is hosting a special exhibition on history of flight. The admission ticket for each adult costs $3 and the ad

mission ticket for each child costs $2. On the opening day of the exhibition, 60 tickets were sold for a total of $160. How many adults visited the special exhibition?
Mathematics
2 answers:
QveST [7]3 years ago
5 0

Answer:

32-40

Step-by-step explanation:

Since it does not give us any specifications as to the exact numbers, we can assume that the amount of adults ranges from 32 to 40, as these are the only numbers that are whole when divided. Obviously, we can't have 24.3333 of a person, so we have our range of answers.

SVEN [57.7K]3 years ago
3 0

Use simultaneous equation for this problem

y= number of adults

x = number of children

3y + 2x = 160

y + x = 60

then we double the second equation

3y + 2x = 160

2y + 2x = 120

we cancel x by elimination

3y - 2y = 160 - 120

y = 40

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A football team has a probability of .75 of winning when playing any of the other four teams in its conference. If the games are
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Answer:

0.3164 = 31.64% probability the team wins all its conference games

Step-by-step explanation:

For each conference game, there are only two possible outcomes. Either the team wins it, or they lose. The probability of winning a game is independent of any other game. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

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In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

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And p is the probability of X happening.

A football team has a probability of .75 of winning when playing any of the other four teams in its conference.

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