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How do you do 2x plus y equals -12 -4x-2y equals 30?
2x+y=-12-4x-2y=30 x=-y/2+30, you plug this into -12-4x-2y=30 and get -12+2y-120-2y=30 which gives 2y-2y=162. This is not possible, so the equation is unsolvable.
What is the slope intercept form of the equation 5x plus 2y equals 30?
5x+2y = 30 2y = -5x+30 y = -2.5x+15 Therfore the slope is 2.5 and y the intercept is 15.
2y plus 3y-7y plus 4 equals 16?
2y+3y-7y+4=16 -2y=12y=-6Check it-12-18+42+4=16-30+46=1616=16
Solve this using substitution x plus 2y equals 30 x2 plus y2 equals 900?
x+2y = 30 => x= 30-2y x2+y2 =900 (30-2y)2+y2 = 900 (30-2y)(30-2y)+y2 = 900 900-60y-60y+4y2+y2 = 900 5y2-120y = 0 y(5y-120) = 0 y = 0 or y= 24 Substitute the value of y into the original equations to find the value of x: Therefore: x = -18 and y = 24 Check: -18+48 = 30 and (-18)2+242 = 900
How to find elimination method for 3x - 4y equals 30 and 3x plus 2y equals 6?
Subtract: 3x - 3x - 4y - 2y = 30 - 6 ie -6y = 24 so y = -4 and x = 14/3
What is the x and y coordinates of these equations y equals 3x and 4x plus 2y equals 30?
4x + 2(3x) = 30 10x = 30 x= 3. Y= 9. (3,9)
3y plus 5 equals y-25?
3y+5=y-25 2y=-30 y= -15
The sum of two numbers is 60 and the difference is 22 what are the numbers?
30 plus 30 equals 60 and 60 minus 38 equals 22
Is 3x plus 2y equals 15 and 6x plus 4y equals 30 Consistent or inconsistent?
We will see. 3X + 2Y = 15 6X + 4Y = 30 I do not like the look of elimination, so substitution 3X + 2Y = 15 3X = 15 - 2Y X = 5 - 2/3Y -------------- 6(5 - 2/3Y) + 4Y = 30 30 - 12/3Y = 30 30 - 4Y = 30 this is inconsistent in approach 3(5 - 2/3Y) + 2Y = 15 15 - 15/3Y = 15 another bad approach, try elimination to show inconsistency - 2(3X + 2Y = 15) 6X + 4Y + 30 -6X - 4Y = - 30 6X + 4Y = 30 I think it is safe to say these systems of equations are inconsistent --------------------
What is the answer to 4x plus 2y equals 30?
4x + 2y = 30 Substitute for the variables y could be equal to 3 x could be equal to 6 So that means that, 4 x (6) + 2 x (3)= 30 24 + 2 x (3)= 30 24 + 6= 30 30 = 30
Where do the parentheses go in 6y plus 2-2y equals 6y if y equals 5?
6y + (2-2)y = 6y 6(5) + (2-2)5 = 6(5) 30 + 0 = 30
2x plus 30 equals 4x plus 22?
2x + 30 = 4x + 22 Subtracting 2x from both sides, 30 = 2x + 22 Subtracting 22 from both sides, 8 = 2x Dividing both sides by 2, 4 = x x = 4
