Answer:
9.20
Step-by-step explanation:
Step-by-step explanation:
The bike cost $199 to get $199 you do a number line then label 520 then at the end label 321 so then you do -20 then -100 then -50 then -20 then -9. so now you add them up 20+100+50+20+9 which equals =199
so bike cost $199
then 520%×199= 1034.8
or 520%×321=1669.2
so the percentage is 1669.2 or 1034.8 probably 1669.2 but they bot count.
The answer is D, 4/3 x 3.14 x 2^3
Answer:
c = 2
Step-by-step explanation:
6c + 3y = 18
6c + 3(2) = 18
6c + 6 = 18
6c = 12
c = 2
Answer:
![x=2y+6](https://tex.z-dn.net/?f=x%3D2y%2B6)
Step-by-step explanation:
So we have the system:
![-x+2y=-6\\3x+y=8](https://tex.z-dn.net/?f=-x%2B2y%3D-6%5C%5C3x%2By%3D8)
If we isolate the x-variable in the first equation:
![-x+2y=-6](https://tex.z-dn.net/?f=-x%2B2y%3D-6)
Subtract 2y from both sides:
![-x=-6-2y](https://tex.z-dn.net/?f=-x%3D-6-2y)
Divide both sides by -1:
![x=2y+6](https://tex.z-dn.net/?f=x%3D2y%2B6)
Therefore, we would substitute the above into the second equation:
![3x+y=8\\3(2y+6)+y=8](https://tex.z-dn.net/?f=3x%2By%3D8%5C%5C3%282y%2B6%29%2By%3D8)
The answer is 2y+6
Further notes:
To solve for the system, distribute:
![6y+18+y=8](https://tex.z-dn.net/?f=6y%2B18%2By%3D8)
Simplify:
![7y+18=8](https://tex.z-dn.net/?f=7y%2B18%3D8)
Subtract:
![7y=-10](https://tex.z-dn.net/?f=7y%3D-10)
Divide:
![y=-10/7\approx-1.4286](https://tex.z-dn.net/?f=y%3D-10%2F7%5Capprox-1.4286)
Now, substitute this value back into the isolated equation:
![x=2(-10/7)+6\\x=-20/7+42/7\\x=22/7\approx3.1429](https://tex.z-dn.net/?f=x%3D2%28-10%2F7%29%2B6%5C%5Cx%3D-20%2F7%2B42%2F7%5C%5Cx%3D22%2F7%5Capprox3.1429)