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2 years ago

Please please solve the whole page please

Mathematics

1 answer:

marishachu [46]2 years ago

7 0

Answer:

Step-by-step explanation:

1. 94/100=0.94=94%

2.15/20=0.75=75%

3. 4/10=0.4=40%

4. 3/100=x/100 》x=3

5. 80/100=x/30 》x=2400/100=24

6. 30/100=x/10 》x=3

7. 2/5=0.4=40%

8. 60/100=x/5 》 x=300/100=3

9. 50/100*x=150 》 50x=15000 》x=300

10. 3/5=0.6=60% 》 100%-60%=40%

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Use the following information to complete parts I, II, and III. 1 hour=3600 seconds

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I) There are $8.760\times 10^3$ hours in 1 year.

II) The exact number of hours in one year is $8.76582\times 10^3$ hours.

Step-by-step explanation:

Given : 1 hour=3600 seconds

1 year = 31556952 seconds.

To find :

I) Use scientific notation to estimate the number of hours in one year.

1 day = 24 hours

1 year = 365 days

So, number of hours in one year is given by,

$n=24\times 365$

$n=8760$

In scientific notation,

$8760=8.760\times 10^3$

So, there are $8.760\times 10^3$ hours in 1 year.

II) 1 year = 31556952 seconds.

1 hour = 3600 seconds

In one year the number of hour is given by,

$n=\frac{31556952}{3600}$

$n=8765.82$

In scientific notation,

$8765.82=8.76582\times 10^3$

So, the exact number of hours in one year is $8.76582\times 10^3$ hours.

III) In two or more complete sentences, compare your answers to parts I and II. In your comparison, discuss similarities and differences.

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Comparing these answers the first one has only 3 significant figures and the second answer has six significant figures.

If we round these we get $8.8\times 10^3$ hours which has two significant numbers.

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4 years ago