x+y = 8
-x+2y = 7
Add both equations together:
3y = 15
Divide both sidea by 3 to find the value of y:
y = 5
Substitute the value of y into the original equations to find the value of x:
Therefore: x = 3 and y = 5
You need two equations to use the addition method.
x=1, y=1
3x + 2y = 4; 2x - 2y = 16 Add; 5x = 20 so x = 4 and y is therefore -4
(2,-2)
123-45-67+89??
You need two equations to use the addition method.
the answer
x=1, y=1
solve system equation using addition method 3x-y=9 2x+y=6
A. True
6x+7y=-6 3(-2x-3y=2) +________ -2y=0 => y=0 Therefore x=-1
Add the equations: 4a + 4a - 5b + 5b = 7 + 17 ie 8a = 24 a = 3, so b = 1
3x + 2y = 4; 2x - 2y = 16 Add; 5x = 20 so x = 4 and y is therefore -4
When drawing a vector using the triangle method you will draw in the resultant vector using Pythagorean theorem. This is taught in physics.
8840-026
Because, if two objects are supposed to be equal as per the equals() method, then the value returned by the hashCode() method must also be the same. This will not be the case if you override only the equals method and this can have some confusing effects when using those objects with hash related collections. So it is always a good idea to override the hashCode() method if you are providing an implementation for the equals method.
(2,-2)