The ratio of quarters to dimes is not still 5 : 3
<u>Solution:</u>
Given that ratio of quarters to dimes in a coin collection is 5:3 .
You add same number of new quarters as dimes to the collection .
Need to check if ratio of quarters to dimes is still 5 : 3
As ratio of dimes and quarters is 5 : 3
lets assume initially number of quarters = 5x and number of dimes = 3x.
Now add same number of new quarters as dimes to the collection
Let add "x" number of quarters and "x" number of dimes
So After adding,
Number of quarters = initially number of quarters + added number of quarters = 5x + x = 6x
Number of dimes = initially number of dimes + added number of dimes
= 3x + x = 4x
New ratio of quarters to dimes is 6x : 4x = 3 : 2
So we have seen here ratio get change when same number of new quarters and dimes is added to the collection
Ratio get change from 5 : 3 when same number of new quarters and dimes is added to the collection and new ratio will depend on number of quarters and dimes added to collection.
Question 3 the volume is 270 (5x6x9=270)
Step 1. Simplify 6 - 4(-x-9)-5 to -4(-x-9) + 1
4 - 5(2x + 11) + 6x = -4(-x-9) + 1
Step 2. Expand
4 - 10x - 55 + 6x = 4x + 36 + 1
Step 3. Simplify 4 - 10x - 55 + 6x to -51 - 4x
-51 - 4x = 4x + 36 + 1
Step 4. Simplify 4x + 36 + 1 to 4x + 37
-51 - 4x = 4x + 37
Step 5. Add 51 to both sides
-4x = 4x + 37 + 51
Step 6. Simplify 4x + 37 + 51 to 4x + 88
-4x = 4x + 88
Step 7. Subtract 4x from both sides
-4x - 4x = 88
Step 8. Simplify -4x - 4x to -8x
x = -88/8
Step 10. Simplify 88/8 to 11
x = -11
Answer: 
Step-by-step explanation:
Given
Nina bought a computer mouse for $9.30
She paid a $20 dollar bill
The money she received is the difference between what is paid and the cost of the mouse i.e.

Therefore, she gets
after deductions.