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Find the value of 2 numbers if their sum is 12 and their difference is 4?
x+y=12 x-y =4 x=12-4 =8 8+y=12 y=12-8 =4 so x=8 y=4 8+4=12 8-4=4
What is the soultion of y -8 and y -2x-12?
If you mean: y = -8 and y = -2x-12 then the solution is x = -2 and y = -8
Three times one number minus a second is eight and the sum of the numbers is twelve?
3x-y=8 x+y=12 3x(12-x)=8 3x-12+x=8 4x-12=8 4x=20 x=5 x+y=12 5+y=12 y=7
Which two numbers have the mean of 10 and the range of 8?
6 and 14 Solution x - y= 8, so x =8 + y, (x + y)/2 = 10, x + y = 20, Substituting x = 8 + y, we have: 2 y + 8 = 20, or 2y = 12, y = 6, x = 6+8= 14
-x+ 4 y>-8 x+y8 y?
-x+ 4y>-8, x+y≤3 y≤3-x -x+4(3-x)>-8 -x+12-4x>-8 12-5x>-8 -5x>-20 x>4 y≤3-(4) y≤-1
If y varies directly with x find the constant of variation if x equals 8 and y equals 12?
y = cx when x = 8, y = 12 so that 12 = 8c which gives c = 12/8 = 1.5
Is x plus y a monomial?
no. x is one term, and y is another term, so x+y has two terms, meaning it is a binomial
What is an example of a monomial?
A monomial is an algebraic expression with only one term. One example of a monomial is 4x. Other examples are 4x^2 or 8/y
What is x y 12 and x - y 4 using the addition method?
16
Evaluate the following expression if x equals 12 y equals 8 and z equals 6?
x=y-8 z=x+12
What is 8 times a number x decreased by y?
It is difficult to tell what expression you are trying to convey. 8 multiplied by x, and then take y away, is 8x-y x take away y, and then 8 multiplied by this number, is 8(x-y) 8 multiplied by x, and divided by y is 8x/y
What sum of two numbers is 8 and their difference is 12 Find the numbers?
Let X be one number and Y the other. So, X + Y = 8 and X - Y = 12 Solve the set of equations simultaneously or use substitution method. X + Y = 8 X - Y = 12 (ADD THIS EQUATION TO FIRST ONE) _______________ 2X = 20, So X =10 and solving for Y using either equation, Y = -2
