There is no solution for the first one
if you eliminate y you get 2 equations
-13x - 13z = -25
-13x - 13x = -15
- there is no solution to theses
a23 means the element in the second row and the 3rd column
so its -5
C. Jasmine bought some tiles to put around her patio. . .
They asked for area which is always L x W, which was the give away.
60 / 5 = 12 miles per gallon
36 miles = 12 miles / gal * x gallons
divide by 12
36/12 =x gallons
3 =x
He needs 3 gallons
Answer:
x=-6
Step-by-step explanation:
−5x+10=40
−5x+10−10=40−10
−5x=30
−5x/5=30/5
x=−6
Answer:
The equivalent expression is:
![16x^4-81=(4x^2-9)(4x^2+9)](https://tex.z-dn.net/?f=16x%5E4-81%3D%284x%5E2-9%29%284x%5E2%2B9%29)
Step-by-step explanation:
We have been given the equation:
![f(x)=16x^4-81=0](https://tex.z-dn.net/?f=f%28x%29%3D16x%5E4-81%3D0)
Equivalent expression can be computed by solving the expression ai its maximum.
We can factorize the given equation:
By using ![a^2-b^2=(a+b)(a-b)](https://tex.z-dn.net/?f=a%5E2-b%5E2%3D%28a%2Bb%29%28a-b%29)
Here, ![a=4x^2,b=9](https://tex.z-dn.net/?f=a%3D4x%5E2%2Cb%3D9)
Hence, we get the equation below:
![16x^4-81=(4x^2-9)(4x^2+9)](https://tex.z-dn.net/?f=16x%5E4-81%3D%284x%5E2-9%29%284x%5E2%2B9%29)
Therefore, the equivalent expression is:
![16x^4-81=(4x^2-9)(4x^2+9)](https://tex.z-dn.net/?f=16x%5E4-81%3D%284x%5E2-9%29%284x%5E2%2B9%29)