Answer:
A variable is a quantity that may change within the context of a mathematical problem or experiment. Typically, we use a single letter to represent a variable. The letters x, y, and z are common generic symbols used for variables.
Step-by-step explanation:
in other words is like x,y,z or any other letters
Answer:
t ≤ 225r
Step-by-step explanation:
Distance = 225 miles
Time taken = t
Average speed = r miles per hour
Recall :
Speed = distance / time
Time, = distance / speed
t = 225 miles / r
All possible values of t :
t ≤ 225r
Answer:

Step-by-step explanation:
<h3><u>TO SOLVE:</u></h3>
With exponent rule.
<h3><u>SOLUTIONS:</u></h3>
First, use exponent rule.
<u><em>EXPONENT RULE:</em></u>
<u><em /></u>


Solve.
Add the numbers from left to right.


So, the final answer is x¹².
Answer:
6 hours
Step-by-step explanation: