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Alex_Xolod [135]
3 years ago
10

Three different hoses, each with its own pump, can be used to fill a swimming pool. If hose A is used by itself, the pool takes

6 h to fill. Is hose B is used by itself, the pool takes 3 h to fill. If hose C is used by itself, the pool takes 2 h to fill. If all three hoses are used at the same time, how long does the pool take to fill?
Mathematics
2 answers:
Andreyy893 years ago
8 0
It will take the pool 1 hour to fill up.
crimeas [40]3 years ago
7 0
Minus 6 and 3, then minus it again with a 2. About 1 hour it will take to fill the pool. Hope this is the correct answer.
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Find a5, when a1 =4, r=5
sasho [114]

Answer:

Answer: a5 = 2500

Step-by-step explanation:

For a geometric sequence:  

First term = a0  

Second term = a1 = a0*r  

Third term = a2 = a0*r^2  

Fourth term = a3 = a0*r^3  

....  

nth term = a(n-1) = a0*r^(n-1)  

Given: a1 = 4 = a0*r  

Also: r = 5  

So, a0*5 = 4 => a0 = (4/5)  

a5 = a(6-1) = Sixth term = a0*r^5 = (4/5)*5^5 = 2500  


Hope this helps

correct me if im wrong☺


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2 years ago
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Rufina [12.5K]

Answer:

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Step-by-step explanation:

Remember PEMDAS???

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you would first solve the addition inside of the parentheses (1 + 2 = 3), and from there finish the equation as it's written from left to right.

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