Note: Consider we need to find each type of coins he has.
Given:
Erin has quarters and nickels for a total of 16 coins.
The value of his coins is $2.60.
To find:
The number of each type of coins.
Solution:
Let x represent the number of quarters and y represent the number of nickels.
According to the question,
Total coins : 
...(i)
Total value : 
...(ii)
Multiply equation (i) by 0.25 and subtract the result from (ii).
Divide both sides by -0.20.
Put y=7 in (i).
Therefore, the number of quarters is 9 and number of nickels is 7.
Answer:
b = 10
Explanation:
Lets start by combining like terms (b):
3/2b + 1/5b
to combine these fractions you must get them to both have the same denominator:
3/2 · 5/5 = 15/10 multiply top and bottom by other fractions denominator
1/5 · 2/2 = 2/10 multiply top and bottom by other fractions denominator
15/10 + 2/10 = 17/10
17/10b = 17
Now we want to get the b to be by itself, so lets first multiply both sides by 10:
17b = 170
Now lets divide both sides by 17:
b = 10
Hope this helped!
9 quarters...................
First one: Exact Form:
- 2 √2-√3-√6-√2/4
Decimal Form:
0.70710678...
