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How many solutions does 2x-y equals 8 and x plus y equals 1 have?
Wiki User
∙ 13y ago
2x - y = 8
x + y = 1
These are your two equations.
They will have two solutions since you have two variables.
The solutions are x=3 and y=-2
Wiki User
∙ 13y ago
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Simplify 15xy-2xy-7x plus x equals?
15xy-2xy-7x+x=13xy-6x
2cy plus 2xy equals 15 solve for y?
Y=15/(2c+2x)
Whats the factor from of 2xy-4x plus 8y-16?
2xy - 4x plus 8y - 16 equals x plus 4 in parentheses multiplied by 2y minus 4 in parentheses. So, the factors are ( x + 4) and ( 2y - 4) .
Evaluate 2xy when x equals 30 and y equals 2?
2xy=2*30*2=120
When x-y equals 7 and xy equals 8 find the value of x square plus y square?
x2 + y2 = x2 - 2xy + y2 + 2xy = (x - y)2 + 2xy = 72 + 2*8 = 49 + 16 = 65 You could, instead, solve the two equations for x and y and substitute, but the above method is simpler.
Simplify 15xy-2xy-7x plus x equals?
15xy-2xy-7x+x=13xy-6x
What 2xy-3y plus 1 equals 0?
It's an hyperbola equation.
Why cant 2x plus y equals 2xy?
Because 2x+y is addition not multiplication
2cy plus 2xy equals 15 solve for y?
Y=15/(2c+2x)
What is 2xy plus 6xy?
2xy + 6xy = 8xy
Whats the factor from of 2xy-4x plus 8y-16?
2xy - 4x plus 8y - 16 equals x plus 4 in parentheses multiplied by 2y minus 4 in parentheses. So, the factors are ( x + 4) and ( 2y - 4) .
Evaluate 2xy when x equals 30 and y equals 2?
2xy=2*30*2=120
What is the answer to this math question 3xy-xy-2y plus 5y?
That equals 2xy + 3y which factors to y(2x + 3)
What is 5xy - x2t plus 2xy plus 3x2t?
What is : 5xy- x2t + 2xy + 3x2t
The area of a rectangle is given by A equals 6x2y plus 4y2x and the width of the rectangle is w equals 2xy What is the length L of the rectangle if L equals A w?
L = 3x + 2y
What is the terms of-3xy2 plus 2xy-4y3?
The three terms are: -3xy2, 2xy and -4y3
2xy x equals 5 y equals 3?
2xy substitute 3 for y and 5 for x 2(5)(3) = 30
