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Solve 4y equals 2y plus 40?
4y = 2y + 40 4y - 2y = 2y -2y +40 2y = 40 y = 20 check 4(20) = 2(20) +40 80 = 80
How do you solve this equation 42 plus 4y-12 equals 13y-12-2y?
42+4y -12 = 13y -12 -2y 4y -13y+2y = 12 -12 -42 -7y = -42 y = 6
Select the system of equations that corresponds to the given graph?
Answers to pick: -2x - y = 4 2x + y = -2 -8x + 4y = -16 -4x + 2y = -8 -x - 2y = 6 -7x + 4y = 16 2x + 3y = 6 3x + 2y = 4
Does 2y squared equals 4y?
No, it equals 4y2
Solve the following systems of equations 3x-2y equals 24 6x-4y equals -6?
1. 3x-2y=24 2. 6x-4y=-6 Note that we can write the first equation as -2y=-3x+24 and the second as -4y=-6x-6 Now divide the first equation by -2 and the second by -4 1. y=3/2x-12 2. y=3/2x+6/4 This tells us the lines have the same slope and different y intercepts which means they are parallel. There is NO solution. If you use elimination or substitution you find the same thing. Note, if you try emiminate you end up with 0y=-54 which is not true also telling you there is no solution.
