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Solve the system using substitution 5x-y equals 5 diveded by5x-3y equals 15?
5x - y = 55x - 3y = 15from the first equation:5x = 5 + y , substitute it in the second equation:5 + y - 3y = 155 -2y = 15-2y = 15 - 5-2y = 10y = -5Now,solve for x :5x = 5 +y5x = 5 -5 = zerox = zero
Two cars leave town at the same time going in the same direction One travels 55 mph and the other travels 48 mph In how many hours will they be 49 miles apart?
x will be the time in hours, so your equation is 55x+48x=49You can add the like terms together to get 103x=49You can divide by 103 to get x=49/103, or about 0.4757281 hours, or 28 minutes and 32.62116 seconds.
Is 2x-5y-3 perpendicular to 5x 2y6?
If the slopes of the lines are negative reciprocals, then the lines are perpendicular.2x - 5y = -3 subtract 2x to both sides-5y = -2x - 3 divide both sides by -5y = (2/5)x +3/55x + 2y = 6 subtract 5x to both sides2y = -5x + 6 divide both sides by 2y = (-5/2)x + 3Yes, the lines are perpendicular.
How do you solve 7 minus 5x equals 10 minus parenthesis6x plus 7parenthesis?
7-5x=10-(6x+7) 7-5x=-60x-70 +5x +5x 7=-55x-70 +70 +70 77=-55x Divide -55 -1.4 = x
What is 20 plus x equals 55?
20 + x = 55x = 55 -20x= 35
How do you solve -3x-52x?
you cant solve but you can simplify -55x
What is 25X2 plus 55X plus 28?
so...50+55x+28??? then it would be 78+55x because you cant add them since they aren't like terms.
Reduce 3x plus 5 2x plus 1?
If you mean solve for X: 3x + 52x + 1 = 0 55x = -1 x = -0.02
What does x mean in this equation -55x plus 6 plus 4 equals -191?
x is equivalent to 3.6545, having 45 repetetive. With this multuplied by 55 and added 10 (4 plus 6) equals -191
How do you solve 3 over 5 plus 5x over 2 equals 8?
3/5 + 5x/2 = 8Multiply each term by 53 + 25x/2 = 40Multiply each term by 26 + 25x = 8025x = 80 - 625x = 74x = 74 / 25OR3/5 + 5x/2 = 85x/2 = 8 - 3/55x/2 = 40/5 - 3/55x/2 = 37/55x = 37/5 * 25x = 74/5x = 74/5 * 1/5x = 74/25
What is -5x plus 3x plus 8?
-5x^2 - 55x - 120
What is the ordered pair 5x-y equals 5?
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Can you factor 6x2 plus 110x-970?
2(3x^2 + 55x - 485)
Factor x2 plus 55x-700?
x2 + 55x - 700 = (x + 20)(x + 35) 2x2x5x5x71,700=6992,350=3484,175=1715,140=1357,100=9310,70=6014,50=3620,35=1525,28=3If you were doing x^2+55x+700 then it would be factorable with 20 and 35 but with a negative in front of the 700 it is prime.
4x plus 7y equals 47 5x - 4y equals -5?
When solving for two equations with two variables, take one equation (it doesn't matter which one) and solve for one of the variables (it doesn't matter which one).4x + 7y = 477y = 47 - 4xy = 47/7 - (4/7)xNow plug that value for the variable you solved for into the other equation5x - 4y = -55x - 4(47/7 - (4/7)x) = -55x -188/7 + (16/7)x = -5(51/7)x = 153/751x = 153x = 3Now plug that value into either equation to solve for the other variable.4x + 7y = 474(3) + 7y = 4712 + 7y = 477y = 35y = 5
