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DiKsa [7]
3 years ago
6

Help me with this please

Mathematics
1 answer:
Rus_ich [418]3 years ago
6 0

Answer:

79, hope this helped! plz make me brainliest

Step-by-step explanation:

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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
Tresset [83]
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.
5 0
3 years ago
2 x 6 - 21 divided by 7
Tresset [83]
Hi there!

The answer is -1.2857

Hope this helps!
8 0
3 years ago
Need Help!!! <br> Radius= 4<br> Height= 6 <br> Pi= 3.14
HACTEHA [7]

Answer:

301.44

Step-by-step explanation:

V = h x π x r^2

V = 6 x 3.14 x 4^2

V = 301.44

hope this helped!

7 0
3 years ago
Last question pls help me
aalyn [17]

Answer:

Step-by-step explanation:

684 dollars

6 0
3 years ago
Find the difference between -14w - 3 and 5w.
kirza4 [7]
(-14w) - (-3) - (-5w) equals
-9w + 3

or if what you're saying is
-14w - 3 - 5w it equals
-19w - 3

or if what youre saying is
(-14w - 3) - 5w it equals
-19w - 3


8 0
3 years ago
Read 2 more answers
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