9. If a train travels 270 mi. in 9 hr., what is its average speed?
2 answers:
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Answer:
<h3>The answer is 3%</h3>Step-by-step explanation:
To find the percentage increase we use the formula
To find the change subtract the smaller quantity from the bigger one
From the question
original price = $24,600
Current price = $ 25,338
Change = $25,338 - $ 24,600
Change = $ 738
So the percentage increase is
We have the final answer as
<h3>Percentage increase = 3%</h3>Hope this helps you
Answer: 83.3
Step-by-step explanation:
Formula :
(1)
(2)
Given : In a psychology class, 32 students have a mean score of 93.2 on a test.
By Using (2) , Sum of scores of 32 students = 93.2 x 32 =2982.4 (3)
Then 16 have a mean score of 63.4.
Again, By Using (2) , Sum of scores of 16 students = 63.4 x 16 =1014.4 (4)
Total students = 32+16 = 48
Add (3) and (4) , we get combined score of 48 students = 2982.4+ 1014.4
=3996.8
Now , by using (2) , the mean score of all of these students together
Hence, the mean score of all of these students together is 83.3.
Let the length of the radius = r feet.
Diameter = 2r = 2 x 6.8 = 13.6 feet
Circumference = 2r = 2 x 3.14 x 6.8 = 42.704 feet = approx. 42.7 feet