Answer:
21.75
Step-by-step explanation:
To find how long she can run in a single mile, divide 14.5 by 2, giving you 7.25. If she runs three of those, (3 times 7.25), she runs 21.75 miles.
Answer:
4 - i
Step-by-step explanation:
Intuitively, the answer will be 4 - i, as the other numbers are too big to have a square as small as 17i. Also, we know that i will not be in the end result, which means that we should have a negative in the result as well.
To test this, we can simply treat 4 and -i as the sides of a right triangle and find the hypotenuse:

So indeed the answer is 4 - i
Equal to because they are both still a pound in weight :D
Answer:the 24 for 1.19 is the better deal
Step-by-step explanation:
1. 1.19 ÷24 =4.95
2.2.89÷36=8.5
3. It cost less for 1 can than the 8.5 dollar can.