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IgorLugansk [536]
3 years ago
13

Cole and his sister chloe are cleaning their house. The house has nine rooms in it. If it take one person about 18 minutes to cl

ean one room, how long will it take cole and chloe, working together to clean the whole house?
Mathematics
1 answer:
alex41 [277]3 years ago
7 0

Answer:  Cole and his sister Chloe will take 81 minutes to clean the whole house.


Step-by-step explanation:

Total rooms in the house = 9

Total persons to clean the house = 2 (Cole and his sister Chloe)

Time taken by 1 person to clean one=18 minutes

Time taken by 2 persons to clean one room together=18 divided by 2 = 9 minutes

Time taken by 2 persons to clean 9 rooms (which is the total number of rooms in the house)=9 multiply 9 = 81 minutes

therefore, they will take 81 minutes to clean the whole house.

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298.706 K

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What are the vertex focus and directrix of the parabola with the given equation <br> y=1/28(x-4)^2-5
patriot [66]
If the parabola is rotated so that its vertex is (h,k) and its axis of symmetry is parallel to the y-axis, it has an equation of (x - h)^2<span> = 4p(y - k)</span><span>, where the </span>focus<span> is (h, k+p) and the </span>directrix<span> is y = k - p. So, we need to determine the values from the equation.

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Hope this answers the question.
8 0
3 years ago
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Sally has a piece of cloth used 1/3 of a foot of the cloth to make a pillow cover in another 4/7 of a foot of the cloth to make
iren [92.7K]

Answer:

\frac{23}{21} feets

Step-by-step explanation:

Given.

Sally started with two feets of cloth.

Total cloth = 2 feets

She used \frac{1}{3} of a foot of the cloth to make a pillow cover.

And another \frac{4}{7} of a foot of the cloth to make a table cloth.

She used total cloth to make a pillow cover and table cloth = \frac{1}{3} +\frac{4}{7}

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Total used cloth by Sally = \frac{19}{21}

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3 years ago
Nine fever than half a number is five more than four times the number
gogolik [260]
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4-1a/2 = 4a
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4 = 9a/2
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8 = 9a
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8/9 = a

HOPE THIS HELPS!!!
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3 years ago
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