So solving this you would change the greater than sign to an equal sign 3+4n=31 then you would solve this by subtracting 3 from 31 which gives you 28 so then you have 4n=28 then you divide each side by 4 to get n by itself which gives you n=7 so then you would change back the sign to n>7
the other problem you would do the same thing so 2n-6=18 the first step you would do is add 6 to both sides, 2n=12 then divide both sides by 2 n= 6 then change back the sign n<6 (less than or equal to) make sure to add the dash under the last problem i just couldn’t add it to this on my phone.
Answer: 
Step-by-step explanation:
Given: Density of tank = 0.4 fish over feet cubed.
We know that, 
Therefore,
Hence, the volume of the tank =
Answer:
y=2
Step-by-step explanation:
Answer:
if i remember correctly from 8th grade, a triangle the angles should add up to 180. x=31 z=104 y=45
Step-by-step explanation:
104 plus 31 plus 45 all adds up to 180.
(not sure what variable needs to be used so I just put x)
35x=140
x=4
