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3 years ago

You read online that a 15 ft by 20 ft brick patio would cost about $2,275 to have professionally installed.

Mathematics

2 answers:

Ivanshal [37]3 years ago

7 0

Answer:

4140

Step-by-step explanation:

when u multiply the measurements for the first one you get 300 and the second measurement you get 546 then u put it in the ratio form

If 300= 2,275

546=x

then you cross multiply

irina1246 [14]3 years ago

5 0

Answer:

Step-by-step explanation:

yes

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ch4aika [34]

Answer:

3/5

Step-by-step explanation:

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3 years ago

In Leakwater township, there are two plumbers. On a particular day three Leakwater residents call village plumbers independently

Marianna [84]

Answer:

25% probability that all three residents will choose the same plumbe

Step-by-step explanation:

For each resident, there are only two possible outcomes. Either they choose the first plumbe, or they choose the second. The plumbers are chosen independent of each other. 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.

Each resident randomly chooses one of the two plumbers.

This means that $p = \frac{1}{2} = 0.5$

Three residents:

This means that $n = 3$

What is the probability that all three residents will choose the same plumb

This is P(X = 0)(all choose the second pumble) or P(X = 3)(all choose the first pumble). So

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

$P(X = 0) = C_{3,0}.(0.5)^{0}.(0.5)^{3} = 0.125$

$P(X = 3) = C_{3,3}.(0.5)^{3}.(0.5)^{0} = 0.125$

$p = P(X = 0) + P(X = 3) = 2*0.125 = 0.25$

25% probability that all three residents will choose the same plumbe

4 0

3 years ago

which of the following questions (multiple answers) are the square roots for 529? check all that applies please I've been stuck

mr Goodwill [35]

23 is one of the answers, and -23, because negative times negative is positive.

Hope this helps and have a nice day:)

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3 years ago

Choose the correct converse.

PIT_PIT [208]

B is the answer to your question

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3 years ago

The temperature was -13 and then rose 9. What is the temperature now?

gulaghasi [49]

Answer:

-4

Step-by-step explanation:

bro thats 6th grade math lol and its SO easy just need to try

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2 years ago