Answer:
a = 0, b = 7
a = 1, b = 6
a = 2, b = 5
a = 3, b = 4
a = 4, b = 3
a = 5, b = 2
a = 6, b = 1
a = 7, b = 0
Step-by-step explanation:
the sum of a and b must equal 7 because 4 x 7 = 28
I think it's B.. But not for sure.
The mean<span> is the average of the numbers .To calculate it just add up all the numbers, then divide by how many numbers there are in total.
</span><span>
The number which appears most often is the mode.
</span>
<span>To find the Median, place the numbers you are given in value order and find the middle number
</span>To find the range<span>, first order the data from least to greatest. Then subtract the smallest value from the largest value in the set.</span><span>
</span>
Answer:
There are 
five dollar bills and 
ten dollar bills.
Step-by-step explanation:
Given:
Selling price of bicycle 
.
The friend gave 
five dollar bills and 
ten dollar bills.
Total number of bills 
.
To find: Number of five dollar bills and ten dollar bills the friend gave.
Solution:
The friend gave five dollar bills and ten dollar bills and the friend gave 
bills in all.
So, 
.
Selling price of bicycle .
So, 
Putting the value of from equation 
in equation 
.
Now, putting the value of in equation .
Hence, there are five dollar bills and ten dollar bills.
