What is the system? (Is there supposed to be an image?)
Answer:
2 books
Step-by-step explanation:
3 1/2 ÷ 1 3/4
Convert the mixed numbers to improper fractions.
7/2 ÷ 7/4
Keep Change Flip
7/2 × 4/7
28/14
2 books
I used the completing the square method to get the (x+2)^2. The final line is in standard form.
Answer:
<h3>
x = 5 units</h3>
Step-by-step explanation:
area of a triangle = 1/2 base * height
where area = 10 units²
height = x units
base = 4
<u>plugin values into the formula:</u>
10 = 1/2 * 4 * x
x =<u> 10 (2) </u>
4
x = 5 units
Answer:12
Step-by-step explanation:
Given
Each coin roll can hold 40 quarters
There are a total of 479 quarters
So, no of coin roll 

As no of coin rolls cannot be in decimal
there are 12 coin rolls