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algol13
3 years ago
13

Is 2 hours and 30 minutes more or less than 10% of a day?

Mathematics
2 answers:
vlabodo [156]3 years ago
8 0
100% - 24h
x - 2,5 h

x= \frac{100*2,5}{24} = \frac{250}{24}≈10,4

ANSWER: More than 10% of day.

jeyben [28]3 years ago
3 0

Answer:

2 hours and 30 minutes is more than 10% of the day

Step-by-step explanation:

First its necessary to identify the 10% of a day. This can be calculate using a rule of three knowing that a day have 24 hours and represent the 100% of the day, then how many hours represent the 10%. This is:

24h ---------------- 100%

 x    -----------------10%

where x is the number of hours that represent the 10% of the day. The value of x is:

X=\frac{24 * 10}{100} = 2.4 hours

Now, 2.4 hour is the sum of 2 hours and 0.4 hours, so we need to know how many minutes are 0.4 hours. This is calculate with a rule of three in which 1 hour have 60 minutes, then how many minutes have 0.4 hours. This is:

60 minutes  -----------  1 hour

      y           ------------ 0.4 hour

Where y is the number of minutes in 0.4 hour. The value of y is:

y=\frac{60*0.4}{1} = 24 minutes

So, 10% of a day is equivalent to 2 hours and 24 minutes.

Finally, 2 hours and 30 minutes is more than 2 hours and 24 minutes or 2 hours and 30 minutes is more than 10% of the day

You might be interested in
From a random sample of 58 businesses, it is found that the mean time the owner spends on administrative issues each week is 21.
zzz [600]

Answer: (20.86, 22.52)

Step-by-step explanation:

Formula to find the confidence interval for population mean :-

\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}

, where \overline{x} = sample mean.

z*= critical z-value

n= sample size.

\sigma = Population standard deviation.

By considering the given question , we have

\overline{x}= 21.69

\sigma=3.23

n= 58

Using z-table, the critical z-value for 95% confidence = z* = 1.96

Then, 95% confidence interval for the amount of time spent on administrative issues will be :

21.69\pm (1.96)\dfrac{3.23}{\sqrt{58}}

=21.69\pm (1.96)\dfrac{1.7}{7.61577}

=21.69\pm (1.96)(0.223221)

\approx21.69\pm0.83

=(21.69-0.83,\ 21.69+0.83)=(20.86,\ 22.52)

Hence, the 95% confidence interval for the amount of time spent on administrative issues = (20.86, 22.52)

7 0
3 years ago
-5y+8x=-18<br><br> 5y+2x=58<br><br> Solve for x and y
xxMikexx [17]

Answer:

in -5y+8x=-18 and 5y+2x=58

x = 4

in -5y+8x=-18 and 5y+2x=58

y = 10

7 0
3 years ago
Read 2 more answers
Whats 9+10??????????
nikdorinn [45]
The answer to 9+10 is 19 because if you add 9 to the number 10, you get 19
3 0
3 years ago
Read 2 more answers
Can someone help me please
dezoksy [38]
Lol i hope tou meant simplify

7 0
3 years ago
What is the value of the expression 9+4n-1 when n = 3?
dangina [55]
Answer: 9+4n-1 = 20


We can solve this by substitution.
Replace n with the value given, 3 (remember 4n means 4 times n):
9 + 4*3 - 1
Then work it out using arithmetic
9+12-1
=20
6 0
2 years ago
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