3 years ago

What is 9 less than a number?

1 answer:

5 0

What number exactly.................

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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

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

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

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

8 0

3 years ago

sergey [27]

Step-by-step explanation:

90+115+65=270

360-270=90

Answer:

U=90°

8 0

3 years ago

Dmitrij [34]

Answer:c

Step-by-step explanation:

3 0

3 years ago

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.

7 0

4 years ago

Kryger [21]

The answer to this is 143".

5 0

4 years ago