X = [-b +- sqrt(b^2-4ac)]/2a
Answer:
x = 6, y= -6
Step-by-step explanation:
-4x - 2y=-12
4x + 8y = -24
Add the two equations together to eliminate x
-4x - 2y=-12
4x + 8y = -24
------------------------
6y = -36
Divide each side by 6
6y/6 = -36/6
y = -6
Now we can find x
4x+8y = -24
4x +8(-6) = -24
4x -48= -24
Add 48 to each side
4x -48+48 = -24+48
4x = 24
Divide each side by 4
4x/4 = 24/4
x =6
It’s 120%
6/5 is 1.2. Multiply by 100 to get a percent.
5:6 is your ratio because it says 5 and 6 and put them in the ratio.
Answer:
63 is 60% of 105.
Step-by-step explanation:
Divide 63 by 3 to get 21. Now that you get 1/3 of that number, it would also mean that 21 is 20% of the full number. Multiply 21 by 5 to get the full number which is 105.