There are three 20 minutes in an hour so she can travel 3 km in an hour
1 km = 1000m so 3km = 3000m she can walk 3000m in an hour
Answer:
z is less than or equal to 2
Step-by-step explanation:
distribute
4z-8+6 is less than or equal to 10
4z-2 is less than or equal to 10
4z is less than or equal to 8
z is less than or equal to 2
Let's set up a formula for this, where x is the amount of dvds he started with:
x-45+10=15
x-35=15
+35 +35
x=50
He had 50 DVDs to begin with.
Check
50-45+10
=15
1. You have the following equation:
2. First, you must apply the Distributive property:
3. Simplify:
3. Add the like terms:
4. Solve for 
:
Therefore, the answer is: 
