We can tell any number is solution of any equation
by plugging that number into equation
and then we check whether it satisfies the given equation
For example:
(1)
Let's assume we have given solution x=1 of
![x^2-4x+3=0](https://tex.z-dn.net/?f=%20x%5E2-4x%2B3%3D0%20)
now, we can plug x=1 to verify it
![(1)^2-4*1+3=0](https://tex.z-dn.net/?f=%20%281%29%5E2-4%2A1%2B3%3D0%20)
![1-4+3=0](https://tex.z-dn.net/?f=%201-4%2B3%3D0%20)
![-3+3=0](https://tex.z-dn.net/?f=%20-3%2B3%3D0%20)
![0=0](https://tex.z-dn.net/?f=%200%3D0%20)
we can see that both sides are equal to 0
so, x=1 will be solution of this equation
(2)
Let's assume we are given x=2 is the solution
now, we can verify it in same way
![x^2-4x+3=0](https://tex.z-dn.net/?f=%20x%5E2-4x%2B3%3D0%20)
now, we can plug x=2 to verify it
![(2)^2-4*2+3=0](https://tex.z-dn.net/?f=%20%282%29%5E2-4%2A2%2B3%3D0%20)
![4-8+3=0](https://tex.z-dn.net/?f=%204-8%2B3%3D0%20)
![-4+3=0](https://tex.z-dn.net/?f=%20-4%2B3%3D0%20)
![-1=0](https://tex.z-dn.net/?f=%20-1%3D0%20)
we know that -1 can not be equal to 0
so, x=2 does not satisfy this equation
so, x=2 can not be solution of this equation
Answer:
Step-by-step explanation:
Just find the area for each individual shape, then add them all up.
3x8/2=12
3x8/2=12
7x3=21
3x8=24
We're actually missing a side value, and it's on the hypotenuse of the triangle shape, so we use this formula to find it.
8²+3²=c²
64+9=c
73=c
√73=8.5
8.5x7=59.5
Add them all up, and the final answer is...
128.5
7/9 because you divide by the common multiplier 3
25 = 1/5 of 125. So that's 20%.