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natulia [17]
3 years ago
5

One number is 1/2 of another number the sum of the two numbers is 27 find the two numbers

Mathematics
1 answer:
Art [367]3 years ago
4 0
Filling up the space because it has to be 20 characters

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Kevin can travel 22 1/2 miles in 1/3 hour. what is his average speed in miles per hour
klemol [59]
We know that speed * time = distance

Before we start we need to make sure the units for all three numbers are right

The time is 1/3 of a hour, 1/3*60 = 20 minutes

x * 20 = 22.5
 
x *2 * 10 = 22.5

2x = 2.25
 
x = 1.125
4 0
3 years ago
Read 2 more answers
A study found that a 95% confidence interval for the mean μ of a particular population was computed from a random sample of 1200
kotykmax [81]

Answer:

95% confidence interval for the mean μ is (6,14)

The Population mean μ lies between ( 6, 14 )

Step-by-step explanation:

<u><em>Explanation</em></u>:-

Given random sample 'n' = 1200

95% confidence interval for the mean μ is determined by

        (x^{-} -Z_{\alpha } \frac{S.D}{\sqrt{n} } , x^{-} +Z_{\alpha } \frac{S.D}{\sqrt{n} } )

Level of significance = 95% 0r 0.05

Z₀.₀₅ = 1.96

   (x^{-} -Z_{\alpha } \frac{S.D}{\sqrt{n} } , x^{-} +Z_{\alpha } \frac{S.D}{\sqrt{n} } ) = 10 ± 4

Mean of the small sample = 10

95% of confidence intervals are

                         ( 10 ±4 )

                  ( 10 -4 , 10+4)

                  ( 6 , 14 )

95% confidence interval for the mean μ lies between ( 6, 14 )

8 0
3 years ago
in 2010, the continent of south america has a population of 395,280,204. which of the following is the closest estimate of this
grigory [225]

South America is a subcontinent of the Americas located in the Southern, Western ... with a 2013 population estimated at 386,000,000, according to national estimates of ... By far the most populous country in South America is Brazil, which has ... as high as 8% in the case of Argentina, while unemployment remaining but low

but i would say your answer could be D

6 0
3 years ago
Help me please idk how to do it
frozen [14]
You do £68.85 - £15.30= (the answer)
Then you do the answer of that divided by 0.85
5 0
3 years ago
Kerry purchased a used car for 14,4000. And had to pay 8% sales tax how much did she pay
saul85 [17]

Answer:

Kerry should pay = 155520

Step-by-step explanation:

Total amount paid = 14,4000 + 8% of 14,4000

It is given that,

Kerry purchased a used car for 14,4000. And had to pay 8% sales tax

<u>To find the 8% of 14,4000</u>

8% of 14,4000 = (8*144000)/100 = 11520

<u>To find total amount paid</u>

Total amount paid = 14,4000 + 8% of 14,4000

 = 14,4000 + 11520 =155520

Therefore Kerry should pay = 155520

4 0
4 years ago
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