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7x+43y=123 ..............(1)
43x+37y=117 ..............(2)
ADD EQN (1)AND(2)
WE GET 80X + 80Y = 240, WHICH WHEN REDUCED IS X + Y = 3 ........................(3)
SUBRACTING EQN (1) AND (2) WE GET
-6X + 6Y = 6, WHICH WHEN REDUCED IS (-X + Y = 1) ........................(4)
ADDING EQN (3) AND (4)
X + Y = 3
-X + Y = 1
WE GET 2Y = 4
SO Y = 2
SUBSTITUTING Y = 2 IN EQN (3) WE GET
X + 2 = 3
SO X = 1
THEREFORE X= 1 AND Y = 2 IS THE SOLUTION FOR THE PAIR OF LINEAR EQUATIONS.
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Solve by the substitution method 5x plus 3y equals -7 x equals 43 - 8y?
5x + 3y = -7x = 43 - 8y5x + 3y = -75(43 - 8y) + 3y = -7215 - 40y + 3y = -7215 - 37y = -7215 -215 -37y = -7 - 215-37y = -222-37y/-37 = -222/-37y = 6x = 43 - 8yx = 43 - 8(6)x = 43 - 48x = -5Thus, (-5, 6) is the solution of the given system of the linear equations.
How do you write a expression for 37 per day plus 1.50 per car?
Set variable x equal to number of cars and variable y equal to number of days. You should get the equation 1.50x + 37y Hope this helps!
What is the answer for 4y 2-10y37 37y 7?
Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "equals" etc.
Unique Phil has 15 stamps of denominations 0.37 and 0.23 If the total value of the stamps is 4.85 how many 0.37 stamps does Phil have?
Use the variable of x for the number of 37 cent stamps. Use the variable of y for the 23 cent stamps. We know that .37x + .23y = 4.85 We also know that x+y = 15 Subtract y from both sides of the equation. So x = 15 -y Substitute (15-y) in the first equation. .37(15-y) + .23y = 4.85 5.55 -.37y + .23y = 4.85 5.55 - .14y = 4.85 5.55 = 4.85 + .14y 5.55 - 4.85 = .14y .7 = .14y .7/.14 = y 5 = y Therefore x = 10 .37(10) + .23(5) = 4.85
Manuel says that the graph of 3y-36 equals 2x2-18x is an ellipse with its major axis parallel to the y-axis Shanice disagrees Who is correct?
3y - 37 = 2x2 - 18x3y = 2x2 - 18x + 37y = (2/3)x2 - 6x + (37/3)The graph is a parabola.Shanice outshines Manuel.
Do Charlie Wilson have a daughter?
yes he dose her name is Telina Thomas she is 37y with 5k 3 boy 2 twingirls think he need to know thisA.S.A.P she live in HEMET
What is the sum of two numbers is 37 and their difference is 7 find the numbers?
Answer:22, 15.Solution:Suppose the first number is x, second one is y, then x + y = 37, x - y = 7.adding these equations:x + y = 37+x - y = 7_____________2 x + 0 = 44x = 44/2 = 22now substitute in first equation:22 + y = 37y = 37 - 22y = 15so the numbers are: 22 and 15.
What are the values of x y and z in 2x plus 5y-3z equals 4 and 3x-2y equals 0 and 7x-4y-5z equals -23 showing all work by elimination and finally by substitution?
Equations: 2x+5y-3z = 4 and 3x-2y = 0 and 7x-4y-5z = -23 their solutions are:- 5*(2x+5y-3z =4) => 10x+25y-15z = 20 3*(7x-4y-5z = -23) => 21x-12y-15z = -69 Subtracting the above: -11x+37y = 89 thus eliminating z 3*(-11x+37y = 89) => -33x+111y = 267 11*(3x-2y = 0) => 33x-22y = 0 Adding the above: 89y = 267 thus eliminating x If: 89y = 267 then y = 267/89 => 3 So by substitution: x = 2, y = 3 and z = 5 Check: (2*2)+(5*3)-(3*5) = 4 Check: (3*2)-(2*3) = 0 Check: (7*2)-(4*3)-(5*5) = -23
