Answer:
The correct median is 13.5
The correct mode is 18
The arithmetic mean is 13
<em>(The geometric mean is 11.4)</em>
Answer:
0
Step-by-step explanation:
This system has 0 solutions because the two equations directly contradict each other so there can't be a value that fits both.
Answer: domain and range are all real numbers!
Step-by-step explanation:
Answer:
5b = 20
Step-by-step explanation:
Since Abdul bought b books and Debra bought 5 times as many books as Abdul, then 5b represents the number of books Debra bought. Since we know that Debra bought 20 books, we can write an equation to represent that: 5b = 20.
(Abdul bought 4 books in that case)
Please note that in such questions, the ":" stands for ratio which in turn stands for divide. Thus, the given expression which is:
will become:
.....(Equation 1)
Now, we know that 3.8 can be rewritten as 
. Also, we know that the mixed fraction 
can be re-written as:
Using the above two expressions in (Equation 1) we get:
Cross-multiplication gives:
Or c=0.25
Thus, we may write the value of c as either the decimal 0.25 or the fraction 
.
