Answer:
4.99
Step-by-step explanation:
i cant remember how i got 4.99 but can show u how to check
= 55 +<u> 4.99 </u>= 59.99
59.99 divide <u>3</u> = 19.99666667
= 19.99666667 divide 4 (working in reverse as it says 4 times the orig no.)
= 4.99 (was rounded)
Answer:

Step-by-step explanation:
The diagram of the problem is drawn and attached.
Given that:



Also

9 because the square root of 81 is 9
9,500 just add the 0 always add 0 if you multiply by 10. 00 for 100 and 000 for 1000
Answer: Im pretty sure thats associative property.