Answer:
x = -10
Step-by-step explanation:
2(x + 3) = x + -4
Reorder the terms:
2(3 + x) = x + -4
(3 * 2 + x * 2) = x + -4
(6 + 2x) = x + -4
Reorder the terms:
6 + 2x = -4 + x
Solving
6 + 2x = -4 + x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-1x' to each side of the equation.
6 + 2x + -1x = -4 + x + -1x
Combine like terms: 2x + -1x = 1x
6 + 1x = -4 + x + -1x
Combine like terms: x + -1x = 0
6 + 1x = -4 + 0
6 + 1x = -4
Add '-6' to each side of the equation.
6 + -6 + 1x = -4 + -6
Combine like terms: 6 + -6 = 0
0 + 1x = -4 + -6
1x = -4 + -6
Combine like terms: -4 + -6 = -10
1x = -10
Divide each side by '1'.
x = -10
<span>The distri</span>bution coefficient is simply the ratio of the concentrations of the solute in the two solvents.
In this case there is 0.5g of caffeine in 10 ml of chloroform and 0.5 g of caffeine in 100ml of water.
The ratio is 0.5/10 : 0.5/100 = 0.05 : 0.005 = 10 : 1
Answer:
Hi,
Step-by-step explanation:
PR²=PQ²+QR²-2*PQ*QR*cos(51°)
=15²+12²-2*15*12*cos(51°)
=142,444659....
PR=11.9350...
PQ²=QR²+PR²-2*QR*PR*cos(R)
cos(R)=(12²+142.444...-15²)/(2*12*11.9350...)=0,21451112....
angle R=77,61315...°≈77.6°
angle P=180°-51°-77.6°≈51,4°
