Answer:
The average speed is:

Step-by-step explanation:
The average speed equation is given by:

Were:
- Δx is the displacement (225 miles)
- Δt is the change in time (3 hours)
Then we have:


I hope it helps you!
Answer:
$522.49
Step-by-step explanation: 549.99*.05=27.50 (discount)
549.99-27.50=$522.49
Answer:
I'm pretty sure it's already simplified.
Step-by-step explanation:
there is no equal sign or x=
Answer:

Step-by-step explanation:
We have the following equations:


If we want to add these equations, we just need to add x-terms, y-terms and independent terms.


I hope it helps you!
Answer:
Hence the expression 
Step-by-step explanation:
Explanation
- The given expression is (m+11)(m-4).
- We have to multiply the given expression.
- Multiply the (m+11) by -4, multiply the (m+11) by m then add like terms.

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