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belka [17]
3 years ago
14

Please help middle school math​

Mathematics
2 answers:
Effectus [21]3 years ago
8 0

Answer:greater than 7 cm

Step-by-step explanation:

Alex787 [66]3 years ago
5 0

Answer:

Greater than 7 cm.

Step-by-step explanation:

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A=base length × height

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What function would represent a translation of this graph of y=x^2 by 8 units to the right?
Anit [1.1K]

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y = (x-8)^2



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3 years ago
Answer the following questions and round your answers to 2 decimal places. 84% of all Americans live in cities with population g
nignag [31]

Answer:

15.23% probability that exactly 42 of them live in cities with population greater than 50,000 people.

Step-by-step explanation:

For each American, there are only two possible outcomes. Either they live in cities with population greater than 50,000 people. Or they do not. The probability of a person living in a city with population greater than 50,000 people is independent of any other person. So we use the binomial probability distribution 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.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

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.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

84% of all Americans live in cities with population greater than 50,000 people.

This means that p = 0.84

If 50 Americans are selected at random, Find the probability that Exactly 42 of them live in cities with population greater than 50,000 people.

This is P(X = 42) when n = 50. So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 42) = C_{50,42}.(0.84)^{42}.(0.16)^{8} = 0.1523

15.23% probability that exactly 42 of them live in cities with population greater than 50,000 people.

4 0
2 years ago
Consider the following 7 door version of the Monty Hall problem. There are 7 doors, behind one of which there is a car (which yo
MatroZZZ [7]

Answer:

2/7

Step-by-step explanation:

Like it says it is the same as monty hall with 3 doors.

You have 7 doors, the probability of the car being in each door is 1/7. After you pick one the probability of the car being in the other doors is 6/7, then he opens 3 doors showing only goats but the probability of it being in one of all the remaining doors is still 6/7 because you made a 1/7 probability choice when you picked your door. Meaning the remaining 3 doors have a probability of 6/7, then 2/7 each

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3 years ago
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