Answer:
![c = 4](https://tex.z-dn.net/?f=c%20%3D%204)
Step-by-step explanation:
Given
![x^2 - 4x + c](https://tex.z-dn.net/?f=x%5E2%20-%204x%20%2B%20c)
Required
Find c
The question is incomplete. However, I'll assume the expression is a perfect square.
To find c, we make use of the following formula
![c = (\frac{b}{2})^2](https://tex.z-dn.net/?f=c%20%3D%20%28%5Cfrac%7Bb%7D%7B2%7D%29%5E2)
Where
![ax^2 + bx + c](https://tex.z-dn.net/?f=ax%5E2%20%2B%20bx%20%2B%20c)
By comparison with ![x^2 - 4x + c](https://tex.z-dn.net/?f=x%5E2%20-%204x%20%2B%20c)
![a =1](https://tex.z-dn.net/?f=a%20%3D1)
![b = -4](https://tex.z-dn.net/?f=b%20%3D%20-4)
So,
becomes
![c = (\frac{-4}{2})^2](https://tex.z-dn.net/?f=c%20%3D%20%28%5Cfrac%7B-4%7D%7B2%7D%29%5E2)
![c = (-2)^2](https://tex.z-dn.net/?f=c%20%3D%20%28-2%29%5E2)
![c = 4](https://tex.z-dn.net/?f=c%20%3D%204)
<em>The value of c that makes the expression, </em>
<em> a perfect square is 4 and the expression is: </em>
<em></em>
Step-by-step explanation:
2x²-98=0
2x²=98
x²=98/2
x²=49
x=root 49
so,x=7
if it is correct answer then please follow me
Answer:
Step-by-step explanation:
The graph must be increasing the whole time because distance is increasing whenever she is running. Because she ran faster during the beginning the line should be steeper than the second stage of her running. Therefore only the fourth graph (bottom right) is an appropriate choice.
First turn the statement into an equation:
3X=12+(X+26). You can combine the 12+26 and now you should have 3X=X+38. Subtract an X from both sides of the equation (2X=38) now finally divide by 2 to find X. X=19
Answer: 7 plus 4 equals 11
Step-by-step explanation:
Brainly plz