1+7 and 7+1 are the same equations. The numbers are just switched around .
Example:
1+2=3
2+1+3
<span>They add up to the same answer no matter where they are placed, therefore knowing 1+7 helps you find the sum of 7+1 (again, because they are the same) </span>
Answer: 6 hours
Step-by-step explanation:
18 ÷ 3 = 6 hours :)
Answer:
i think its D. C. or E. I'm not that great in math im kind of struggling thru it
Distance formula:

5 units-4.5 units=0.5 units
LM is 0.5 units longer than LM.
Since the sum of scores must be at least 289:
72+78+70+x ≥ 289