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What is the value of the expression 3x plus 4-2y if x equals 5 and y equals -3?
Wiki User
∙ 12y ago
3x+4-2y x=5 and y=-3
You substitute these values into the original equation.
15+4+6 = 25
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∙ 12y ago
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What is the y-intercept of the line with equation -4 plus 2y equals 24?
-4 + 2y = 242y + 4 = 242y + 4 - 4 = 24 - 42y + 4 - 4 = 24 - 42y = 24 - 42y = 202y/2 = 20/22y/2 = 20/2y = 20/2y = 10Therefore the y-intercept is at (0,10) or has a value of 10
Answer this equations x plus 42y equals 4?
Solving equations in two unknowns requires two independent equations. Since you have only one equation there is no solution.
What is 2y plus 3 equals 4 as decimal or fraction?
2y + 3 = 42y = 4 - 32y = 1divide both sides of the equation by 22y/2 = 1/2y = 1/2 in fractionory = 0.50 in decimal
When using substitution What is x and y for 3x plus 6y equals 48 -5x plus 6y equals 32?
3x + 6y = 48 .... Eq.1-5x + 6y = 32 .... Eq.2 .... in another way 6y = 5x + 32Put the value of Eq.2 in Eq. 13x + 5x + 32 = 488x = 48 - 328x = 16x = 16/8 ...... X = 2To find the value of Y put the value of X in Eq.26y = 5x + 326y = 5(2) + 326y = 10 + 326y = 42y = 42/6 ...... Y + 7
How do you solve the system of equations -2x plus 6y equals 6 and -7x plus 8y equals -5?
Make the equations contain an equal co-efficient of x: first multiplied by 7 = -14x + 42y = 42 second multiplied by 2 = -14x + 16y = -10 Subtract leaving 26y = 52 y = 2 -2x + 12 = 6 -2x = -6 x = 3 Check these values in the two original equations.
What is the y-intercept of the line with equation -4 plus 2y equals 24?
-4 + 2y = 242y + 4 = 242y + 4 - 4 = 24 - 42y + 4 - 4 = 24 - 42y = 24 - 42y = 202y/2 = 20/22y/2 = 20/2y = 20/2y = 10Therefore the y-intercept is at (0,10) or has a value of 10
27y squared plus 42y-5?
Reorder the terms: -5 + 42y + 27y2 Factor a trinomial. (-5 + -3y)(1 + -9y)
Answer this equations x plus 42y equals 4?
Solving equations in two unknowns requires two independent equations. Since you have only one equation there is no solution.
What is 2y plus 3 equals 4 as decimal or fraction?
2y + 3 = 42y = 4 - 32y = 1divide both sides of the equation by 22y/2 = 1/2y = 1/2 in fractionory = 0.50 in decimal
When using substitution What is x and y for 3x plus 6y equals 48 -5x plus 6y equals 32?
3x + 6y = 48 .... Eq.1-5x + 6y = 32 .... Eq.2 .... in another way 6y = 5x + 32Put the value of Eq.2 in Eq. 13x + 5x + 32 = 488x = 48 - 328x = 16x = 16/8 ...... X = 2To find the value of Y put the value of X in Eq.26y = 5x + 326y = 5(2) + 326y = 10 + 326y = 42y = 42/6 ...... Y + 7
If 4Y 42Y 12 What does y?
51
How do you solve the system of equations -2x plus 6y equals 6 and -7x plus 8y equals -5?
Make the equations contain an equal co-efficient of x: first multiplied by 7 = -14x + 42y = 42 second multiplied by 2 = -14x + 16y = -10 Subtract leaving 26y = 52 y = 2 -2x + 12 = 6 -2x = -6 x = 3 Check these values in the two original equations.
How do you rewrite -3x plus 2y equals -4?
-3x + 2y = -4There are lots of different ways to write it.Here are a few:-3x = -2y - 43x = 2y + 42y = 3x - 4-2y = -3x + 4x = 2y/3 + 4/3y = 3x/2 - 2
How many solutions do these equations havey = 2x + 42y = 4x + 8?
Infinite number of solutions
What is the x and y equal to if the problems are 6x-5y equals 11 and -4x plus 7y equals 11?
6x - 5y = 11 --------- Eqn 1 -4x + 7y = 11 ------- Eqn 2 ___________ 24x - 20y = 44 ------ Eqn 1 multiplied by 4 on both sides, equation won't change -24x + 42y = 66 ---- Eqn 2 multiplied by 6 on both sides, equation won't change _____________ 0x + 22y = 110 ----- Adding the two eqns above gives you this result _____________ That is 22y = 110, or y = 5 (Answer) Now substitute the value of y in either eqn 1 or eqn 2 (we will use eqn 1) 6x - 5(5) = 11 6x = 11 + 25 = 36 x = 6 (Answer)
Which two consecutive integers are such that the difference between four times the first and twice the second equals eighty-two?
We have x and y where 1. y - x = 1 2. 4x - 2y = 82 Solve simultaneously by eliminating y, to get 2x = 84 x = 42y = 43. ---- Arguably, a 'difference of 82' could also mean that 4x - 2y = -82 In this case, we get 2x = -80 x = -40, y = -39
X has 14 more than Y Together they have 56 How much money does each of tham have?
Let the amount that Eks has = X.Let the amount that Wye has = Y.X = Y + 14.X + Y = 56(Y + 14) + Y = 562Y + 14 = 562Y = 42Y = 21 ===> X = 35
