Each student on average has 6 books.
<h3>
What is average?</h3>
- In layman's terms, an average is a single number chosen to represent a set of numbers, usually the sum of the numbers divided by the number of numbers in the set.
- The average of the numbers 2, 3, 4, 7, and 9 is 5, for example.
To find how many books on average each student has:
- To find the average, divide the total number of books by the total number of students.
- So, 14,400/2,400 = 6
Therefore, each student on average has 6 books.
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Answer:
12
Step-by-step explanation:
Ama's sister is 12 now and Ama is 8. 8/12 simplified is 2/3.
Four years ago Ama's would have been 4 and her sister would have been 8. 4/8 simplified is 1/2.
The equations:
(Ama is a)
(Ama's sister is s)
a = (2/3)s
a - 4 = (1/2)(s - 4)
Step one:
You would substitute the first equation into the second equation to get
(2/3)s - 4 = (1/2)(s - 4)
Step two:
Multiply by 6 to get rid of the fractions to get
4s - 24 = 3(s - 4)
Step three:
Simplify to get
4s - 24 = 3s - 12
Step four:
Subtract 3s and add 24 to get
s = 12
Step five:
Input the s value into the first equation to get
a = (2/3)(12) = 8
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Answer:
I believe the answer to be A
Step-by-step explanation:
First plug in 2 for x
next solve the equation/ 2 and 2 is 4 so 4 +1 is 5
next 3 of 2 is 6 and 6-1 is 5
so as a result both sides are b=5
First add the seconds you have 45 +5+10 seconds which equals 60 seconds or 1 minutes. Now add the minutes 9 + 7 + 12 minutes = 28 minutes then add that 1 minutes that you got from the seconds 28 + 1 minute = 29 minutes 7:40 + 20 minutes = 8:00 + 9 minutes = 8:09 am. So Marsha arrived to school at 8:09 am. Comment if you have any questions.