What is y=-2x-6 and y=x+9
2 answers:
<span>The correct answer is x= -5, y=4.
Explanation:
Since y is isolated in both of these equations, we will set them equal to one another to solve:
-2x-6=x+9.
Add 2x to both sides:
-2x-6+2x=x+9+2x
-6=3x+9.
Subtract 9 from both sides:
-6-9=3x+9-9
-15=3x.
Divide both sides by 3:
-15/3 = 3x/3
-5=x.
Substitute this into the second equation; y= -5+9 = 4.</span>
Answer:
x= -5 , y= 4.
Step-by-step explanation:
Given: y = x+9y and y = -2x-6 .
To find: variable x and y.
Solution: we have given that
y=x+9 -----Equation (1)
y = -2x-6 ------Equation(2)
Equating both equation
x +9 = -2x -6
On adding 2x both sides
x + 2x + 9 = -6
3x + 9 = -6
On subtracting both sides by 9
3x + 9 -9 = -6 -9
3x = - 15
On dividing both sides by 3
x = -5
Now, on substituting x =-5 in equation 1
y = -5 + 9
y= 4
( -5, 4)
Therefore, x= -5 , y= 4.
You might be interested in
Answer:
Brand B is cheaper by 0.17 per pound.
Step-by-step explanation:
Brand A = 47.7/45 = 1.06
Brand B = 48.95/55 = 0.89
Answer:
The answer is "
"
Step-by-step explanation:
Given:
Find critical points:
differentiate the value with respect of x:
![\to g'(x)= (x-e)^3 \frac{d}{dx}e^{e-r} +e^{e-r} \frac{d}{dx}(x-e)^3=(x-e)^2 e^{(e-x)} [-x+e+3]](https://tex.z-dn.net/?f=%5Cto%20g%27%28x%29%3D%20%28x-e%29%5E3%20%5Cfrac%7Bd%7D%7Bdx%7De%5E%7Be-r%7D%20%2Be%5E%7Be-r%7D%20%20%5Cfrac%7Bd%7D%7Bdx%7D%28x-e%29%5E3%3D%28x-e%29%5E2%20e%5E%7B%28e-x%29%7D%20%5B-x%2Be%2B3%5D)
critical points 
![\to (x-e)^2 e^{(e-x)} [e+3-x]=0\\\\\to e^{(e-x)}\neq 0 \\\\\to (x-e)^2=0\\\\ \to [e+3-x]=0\\\\\to x=e\\\\\to x=e+3\\\\\to x= e,e+3](https://tex.z-dn.net/?f=%5Cto%20%28x-e%29%5E2%20e%5E%7B%28e-x%29%7D%20%5Be%2B3-x%5D%3D0%5C%5C%5C%5C%5Cto%20e%5E%7B%28e-x%29%7D%5Cneq%200%20%5C%5C%5C%5C%5Cto%20%28x-e%29%5E2%3D0%5C%5C%5C%5C%20%5Cto%20%5Be%2B3-x%5D%3D0%5C%5C%5C%5C%5Cto%20x%3De%5C%5C%5C%5C%5Cto%20x%3De%2B3%5C%5C%5C%5C%5Cto%20x%3D%20e%2Ce%2B3)
So,
The critical points of 
Answer:
$6
Step-by-step explanation:
18/3=6
24/4=6
30/5=6
36/6=6
Answer:
f(x) = 20(3/5)^x
Step-by-step explanation:
When x = 1, f(x) = 12
f(x) = 20(3/5)^1
= 20 * 3/5
= 60/5
= 12.
so f(x) = 20(3/5)^x is the answer.
Answer:
it would be 12 to the second power.. i think or 24 to the second power
Step-by-step explanation:
