<em>x = 9</em>
<em>y = 0</em>
- Step-by-step explanation:
<em>y = -2x + 18 </em>
<em>4y - x + 9 = 0</em>
<em />
<em>4(-2x + 18) - x + 9 = 0</em>
<em>- 8x + 72 - x + 9 = 0</em>
<em>- 9x + 81 = 0</em>
<em>81 = 9x</em>
<em>x = 81 : 9</em>
<em>x = 9</em>
<em />
<em>y = - 2×9 + 18</em>
<em>y = - 18 + 18</em>
<em>y = 0</em>
X+y=72
x-y=48
Solve for one of the variables.
x=48+y
Then plug into the other equation and solve.
(48+y)+y=72
48+2y=72
2y=24
y=12
Use that answer in one of the formulas to find the other variable.
x+12=72
x=60
You can plug the answers into the original formulas to check the answers.
Answer: OPTION C.
Step-by-step explanation:
Direct variation, by definition, has the form shown below:
y=kx
Where k is the constant of proportionality.
Then if you solve fo y from the given equation, you obtain the following form:
Therefore y varies directly with x².
Answer:
The answer is (D)
Adding the 5 and 3 then multiplying them by the numbers in the brackets in order to remove them from the brackets
In other words Simplifying the equation
Answer:
10*-3= -30
Step-by-step explanation:
10*-3= 5*-8
