13.4 = 13.40
This is because the 0 at the end is a trailing decimal, and so when testing for inequalities, you can simply disregard it.
Answer:
20% discount means
Previous price was $100 and now it’s
(100-20)=$80
$100 is now $80
So $1 is now =80/100 =$ 0.8
So $45 is now = 45x0.8 = $36
So she will save $45– $36 = $9
Step-by-step explanation:
Answer:
3+2x<30
Step-by-step explanation:
3 represents that Emily is 3 years older than 2x
2x represents twice Mary's age
<30 represents that it's always less than 30
Answer: 33.33 minutes longer.
Step-by-step explanation :
We need to remember the following formula:

Where "t" is the time, "d" is the distance and "V" is the speed.
We know that she runs approximately 5.4 miles per hour, then:

Since she plans to run 9 miles on Tuesday, her run's time on Tuesday will be:

Making the conversion from hours to minutes, we get:

Since she plans to run 12 miles on Thursday, her run's time on that day will be:

Making the conversion from hours to minutes, we get:

Finally in order to find how many longer will her run be on Thursday compared to Tuesday, we need to make the following subtraction:
