Joe drove 538 miles in 9 hours 15 minutes.what was his average speed per hour?
2 answers:
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Answer:
if
Step-by-step explanation:
Recall some following basic ideas about absolute value:
or I guess
or just
but there is a reason why I wrote it the way I did.
You see that the absolute value returned the same value if the value was positive.
You see that the absolute value returned the opposite value if the value was negative.
You can include 0 in either.
Let's look at alone for a second.
* if
is positive or zero.
When is positive or zero? [greater than or equal to 0]
Subtract 3 on both sides
* if
is negative or zero.
When is negative or zero? [less or equal to 0]
Subtract 3 on both sides
So looking at the bullet points (the *), fits into the first inequality.
Therefore, .
