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sattari [20]
3 years ago
8

Ann cleans an apartment in 12 hours and liz cleans an apportment in 18 hours. How long would it take to clean an appartment toge

ther?
Mathematics
1 answer:
Tresset [83]3 years ago
5 0
If Ann cleans in 12 hours then she cleans \frac{1}{12} of the apartment per hour. Similarly Liz cleans \frac{1}{18} of the appartment per hour. So together then can clean \frac{1}{12}+\frac{1}{18}=\frac{5}{36} of the apartment for hour. Therefor it will take them \frac{36}{5}=7.2 hours to clean.

The general formula R_{c}=\frac{AB}{A+B} can be used as a check if needed.
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In the first quadrant you start at (7,3) and move 5 unit left
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Answer:

That would be (2,3)

Step-by-step explanation:

When we're moving left in the coordinate plane, we are subtracting the x-coordinate by how much distance we move.

In this case, 7-5=2, so the new x-coordinate is 2, but the y-coordinate doesn't change since we're going horizontally and not vertically.

7 0
3 years ago
Convert the rectangular equation to polar form.
N76 [4]
To convert from rectangular coordinate (x, y) to polar coordinate (r, θ).
r is given by the square root of the sum of the squares of the rectangular coordinate.
r= \sqrt{x^2+y^2}
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\theta=\tan^{-1} \frac{y}{x}
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r= \sqrt{3^2+4^2} = \sqrt{9+16} = \sqrt{25} =5 \\ \theta=\tan^{-1}( \frac{4}{3}) =53.13^o
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3 years ago
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6 0
3 years ago
A bakery used 38 pounds of flour to make French bread and
fomenos

Answer:

since we are not given the options, I will write down a few equations that represent the number of French bread loaves and bagels:

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2a + b ≤ 38

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a ≤ (38 - b) / 2

a ≤ 19 - 0.5b

b ≤ 38 - 2a

b ≤ 2(19 - a)

Hopefully one of these equations is one of the choices given to you.

8 0
2 years ago
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Given that the first number shows up as four. The second number should be six so that the sum would be ten. Therefore, its probability should be 1/6.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
3 0
3 years ago
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