0
Add your answer:
Earn +20 pts
-99 equals 12 z - 3 6z?
-99 = 12z - 3(6)zSimplifying the expression, we have:-99 = 12z - 18z = -6zDivide by -6:z = 16.5Or, if you meant 3 6 as the number, we have:-99 = 12z - 36zSimplify:-99 = -24zDivide by -24:z = 4.125
Joe has three times as many as Tom and Tom has four times as many as Mary Altogether they have 153 How many has each Mary has Tom has Joe has?
x=3y y=4z x=12z x+y+z=z+4z+12z=153 now you have the answer
How do you solve these equations by substitution 2x-5y plus 2z equals 16 3x plus 2y-3z equals -19 4x-3y plus 4z equals 18?
If you mean: 2x-5y+2z = 16 and 3x+2y-3z = -19 and 4x-3y+4z = 18 then the solutions are found as follows:- 3(2x-5y+2z = 16) => 6x-15y+6z = 48 2(3x+2y-3z = -19) => 6x+4y-6z = -38 Adding the above: 12x-11y = 10 thus eliminating z 4(3x+2y-3z = -19) => 12x+8y-12z = -76 3(4x-3y+4z = 18) => 12x-9y+12z = 54 Adding the above: 24x-y = -22 thus eliminating z 2(12x-11y = 10) => 24x-22y = 20 1(24x-y = -22) => 24x-y = -22 Subtracting the above: -21y = 42 thus eliminating x If: -21y = 42 then y = -2 So by substitution: x = -1, y = -2 and z = 4 Check: (2*-1)-(5*-2)+(2*4) = 16 Check: (3*-1)+(2*-2)-(3*4) = -19 Check: (4*-1)-(3*-2)+(4*4) = 18
Divisibility rule for 6?
Numbers are divisible by 6 if they are even and also divisible by 3. examples are 6,12,18,24,30,36,60,54,...... examples as algebric expressions 18xy+12z+6y-a,where a is divisible by 6 i.e 6,12,18...
What does this equal 6z plus 28 equals 12z plus 10?
6z + 28 = 12z + 10 18 = 6z 3 = z
What is the answer to -3z plus 17 plus 12z equals 11?
-3z+17+12z = 11 9z = -6 z = -2/3
6z plus 28 equals 12z plus 10?
6z+28=12z+10 6z-12z=10-28 addition property of equality. -6z=-18 simplification z=3 multiplication property of equality.
How do you solve 9x plus 18y-12z equals 36?
There are three variables in the equation. In order to find numbers for all of them,you need three separate independent equations.As it is now, the graph of that equation is a line in 3-dimensional space, andevery point on the line is a 'solution' to the equation. We don't have to tell youhow many points there are on a line, do we ?
What is the answer to -41 equals 12z-5?
12z-5 = -41 12z = -41+5 12z = -36 z = -3
How do you factor z2 plus 35 equals 12z-1?
(z - 6)(z - 6)
What does -12 z -9 equal to?
-3
6z2 plus 12z plus 4?
24z+4 or 6(4z+1)
What is 12Z equals 108?
divide each side by 12; Z=9
-99 equals 12 z - 3 6z?
-99 = 12z - 3(6)zSimplifying the expression, we have:-99 = 12z - 18z = -6zDivide by -6:z = 16.5Or, if you meant 3 6 as the number, we have:-99 = 12z - 36zSimplify:-99 = -24zDivide by -24:z = 4.125
What is 12z squared plus 16z -3?
It is a quadratic expression and is (2z+3)(6z-1) when factored
10x plus 2y plus 8z-5x plus 4z-4y equals?
10x + 2y + 8z - 5x + 4z - 4y = 10x - 5x + 2y - 4y + 8z + 4z = (10 - 5)x + (2 - 4)y + (8 + 4)z = 5x - 2y + 12z
