Answer:
x = -2 ±sqrt(7)
Step-by-step explanation:
3x^2 +12 x = 9
Divide each side by 3
3x^2 /3 +12x/3 = 9/3
x^2 +4x = 3
Take the coefficient of x
4
Divide by 2
4/2 =2
Square it
2^2 =4
Add it to each side
x^2 +4x+4 = 3+4
x^2 +4x+4 = 7
(x+2)^2 = 7
Take the square root of each side
x+2 = ±sqrt(7)
Subtract 2 from each side
x+2-2 = -2 ±sqrt(7)
x = -2 ±sqrt(7)
Answer:
x = 100
y = 50
Step-by-step explanation:
if x = y + 50,
putting the value of x in first equation we get,
- x + 2y = 200
- y + 50 + 2y = 200
- 3y = 200 - 50
- y = 150 / 3
- y = 50
putting the value of y in second equation,
- x = y + 50
- x = 50 + 50
- x = 100
<em>i</em><em> </em><em>hope</em><em> </em><em>it</em><em> </em><em>helped</em><em>.</em><em>.</em><em>.</em><em>.</em>
C and D tell me if those are wrong because i'm only a beginner and i would like to learn from my mistakes
Answer:
1050
Step-by-step explanation:
Let x = full capacity

Move the variable to the left side by subtracting both sides by 


Combine the like terms (don't forget about common denominator)


Multiply both sides by
to isolate the x

