Step-by-step explanation:
3x + 1
=3x + 1
this is because a variable X is attached to the 3 so it makes the 3x and the 1 unlike
therefore you can not add them.
Answer:
Step-by-step explanation:
4.5 x 3 = 13.5 mi^2
It will take him 30-45 minutes to catch up with her. Hope I could help! :)
What i would do is is 800 divieded by 100 that gives you how many per 1
in this case it is 8 the times the percentage for an example
8 X 35 = 280 now you do the other half
So you need to do substitution. First solve the easier equation for 1 variable.
x+y=-1 now subtract x to get y=-x-1. Then plug this into the top equation to get 2x+7(-x-1)=2. Next distribute to get 2x+-7x-7=2. Now combine like terms to get -5x=9 so x=-5/9. Now you have to plug this back into the original equation to get y. 2(-5/9)+7y=2, so -10/9 +7y=2. No move terms around to get 7y=28/9 then divide by 7 to get y= 4/9
