Answer:
x = 0
Step-by-step explanation:
Since the product is not equal zero, we need to multiply both parenthesis first:
![(x-3)(x+9) =-27](https://tex.z-dn.net/?f=%28x-3%29%28x%2B9%29%20%3D-27)
![x*x+x*9+(-3)*x+(-3)*9=27](https://tex.z-dn.net/?f=x%2Ax%2Bx%2A9%2B%28-3%29%2Ax%2B%28-3%29%2A9%3D27)
![x^2+9x-3x-27=27](https://tex.z-dn.net/?f=x%5E2%2B9x-3x-27%3D27)
![x^2+6x-27=27](https://tex.z-dn.net/?f=x%5E2%2B6x-27%3D27)
Add 27 from both sides:
![x^2+6x-27+27=-27+27](https://tex.z-dn.net/?f=x%5E2%2B6x-27%2B27%3D-27%2B27)
![x^2-6x=0](https://tex.z-dn.net/?f=x%5E2-6x%3D0)
Factor
out:
![x(x+6)=0](https://tex.z-dn.net/?f=x%28x%2B6%29%3D0)
Apply the zero product:
![x=0,x+6=0](https://tex.z-dn.net/?f=x%3D0%2Cx%2B6%3D0)
![x=0,x=-6](https://tex.z-dn.net/?f=x%3D0%2Cx%3D-6)
The solutions of the equation are
and
.
We can conclude that the correct answer is x = 0.
The second day, she sold more.
We know 7/9 is about 0.777777777778
And 0.78 < 0.85
So the second day she sold more.
Answer:
Angle 10=74 deg
Alternate Interior angle theorem
Step-by-step explanation:
They are Alternate Interior angles.
Answer: m=2, b=-3
Explanation: rewrite in slope intercept form - y=2x-3. Subtracting is the same as adding therefore it becomes, y=2x+(-3) then using the formula- y=Mx+b identify the slope which is 2 then identify the y-intercept which would be -3.
Hope that helps! Have a good day :)