Answer:
x^2 -2x = 4x+1
2x^2 +12x = 0
9x^2 +6x -3=0
Step-by-step explanation:
A quadratic equation has the highest power of x being squared
x^2 -2x = 4x+1
2x^2 +12x = 0
9x^2 +6x -3=0
These are all quadratic equations
Answer:
radius of the sphere (r) = 21 units
Step-by-step explanation:
here's the solution : -
=》
![12348\pi = \frac{4}{3} \times \pi \times {r}^{3}](https://tex.z-dn.net/?f=12348%5Cpi%20%3D%20%20%5Cfrac%7B4%7D%7B3%7D%20%20%5Ctimes%20%5Cpi%20%5Ctimes%20%20%7Br%7D%5E%7B3%7D%20)
=》
![{r}^{3} = 12348 \times \frac{3}{4}](https://tex.z-dn.net/?f=%20%7Br%7D%5E%7B3%7D%20%20%3D%2012348%20%5Ctimes%20%20%5Cfrac%7B3%7D%7B4%7D%20)
( pi cancel out )
=》
![{r}^{3} = 9261](https://tex.z-dn.net/?f=%20%7Br%7D%5E%7B3%7D%20%20%3D%209261)
=》
![r = 21](https://tex.z-dn.net/?f=r%20%3D%2021%20)
Answer:
H = 11m
Step-by-step explanation:
As we know, volume = length * breadth/width * height
Given,
length = 6m
Breadth/width = 3 1/2 or 3.5
Height = ?
So, l * b * h = v
=> 6m * 3.5m * h = 231m
=> 21m * h = 231m
=> h = 231m /21m = 11m
Therefore, height = 11m / 11metres
Hope this helps