Let's solve this with the quadratic formula, which is:
Let's plug in the values:
Remove exponents:
Simplify.
This leaves us with the final solutions being:
Let me know if you have any questions regarding this problem!
Thanks!
-TetraFish
Answer:
Step-by-step explanation:
10 time the number for friend equals the cost
Answer:
x=5
Step-by-step explanation:
add 5 to both sides
-20+5 = -3x
-15=-3x (divide)
x=5
You would use the equation 1000(1+0.3)^x
Plug in 6 months for x
1000(1.3)^6
When you solve for that you get 4826.809 and then round to the nearest tenth I would assume so 4826.8
Hope this helps!
Y = 3x - 4 . . . (1)
9x - 3y = 14 . .(2)
Putting (1) into (2) gives
9x - 3(3x - 4) = 14
9x - 9x + 12 = 14
12 = 14
Therefore, there is no solution.