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soldier1979 [14.2K]
3 years ago
8

What is 9 less than a number?

Mathematics
1 answer:
scoundrel [369]3 years ago
5 0
What number exactly.................
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Working alone it takes Ryan 13.4 weeks to build a home.Jack can build the same home in 13.1 weeks how long would it take them if
dexar [7]

Answer: 6.62 weeks


Step-by-step explanation:

Time taken by Ryan to build a home = 13.4 weeks

Time taken by Jack to build the same home = 13.1 weeks

Let t be the time to complete a house if they work together, then

\frac{1}{t}=\frac{1}{t}= \frac{1}{\text{time taken by Ryan alone}}+\frac{1}{\text{time taken by Jack alone}}

=\frac{1}{13.4}+\frac{1}{13.1}\\\\=\frac{13.1+13.4}{175.54}\\\\=\frac{26.5}{175.54}

\\\Rightarrow\ t=\frac{175.54}{26.5}\\\Rightarrow\ t=6.62\ weeks

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3 years ago
Find the measure of each angle indicated
sergey [27]

Step-by-step explanation:

90+115+65=270

360-270=90

Answer:

U=90°

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3 years ago
Find the surface area.
Dmitrij [34]

Answer:c

Step-by-step explanation:

3 0
3 years ago
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The value of 9 in 4,934 is how many times as large as 9 in 1,290
vagabundo [1.1K]
The 9 in 4,934 is 10 times larger than the 9 in 1,290.


Meaning the answer is 10 times bigger.
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4 years ago
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How many square inches does an 11" x 13" area encompass?
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The answer to this is 143".
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