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Schach [20]
3 years ago
5

A pool can be filled by one pipe in 9 hours and by a second pipe in 18 hours. How long will it take to fill the pool using both

pipes
Mathematics
1 answer:
hammer [34]3 years ago
7 0

Answer:54

Step-by-step explanation:

9+9=18

18+18=36

36+18=54

Hope this helps:)

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15. 15x4=60

Step-by-step explanation:

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Drea and Sajini both worked at a local ice cream shop over the summer. Together, they earned a total of $425. Drea earned $25 mo
Oksi-84 [34.3K]

Answer:

Sajini = 200

Drea = 225

Step-by-step explanation:

d = amount Drea earned

s = amount Sajini earned

Together they earned 425

d+s =425

d = s+25


The system of equations

d+s =425

d = s+25


I will use substitution to solve

Substitute d= s+25 into the first equation

d+s =425

(s+25) + s = 425

Combine like terms

2s+25 =425

Subtract 25 from each side

2s+25-25 =425-25

2s = 400

Divide by 2

2s/2 =400/2

s =200

Sajini = 200

Now we need to find d

d = s+25

d = 200 + 25

d = 225

Drea = 225


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3 years ago
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Find the domain of the function f(x) = 3x - 2.
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Answer:

X=R

Step-by-step explanation:

domain is everything you can fill in for X. in the function X can be everything, so X=R

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13. This month a band has 6 musicians. This is a 50% increase from the
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There were 4 musicians in the bad last month
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How do find length and width if you have the area?
chubhunter [2.5K]

Answer:

Step-by-step explanation:

The area of a rectangle(A) related to the length (L) and WITDH (W) of its sides by the following Relationship:A=L W if you know the width is easy to find the length rearranging this equation to get L=A÷w if you know the length and want width rearranged to get W=A÷L this is the formula not the answer.

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4 years ago
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