The abbreviation for milliliters can be any of those two as both are equally correct and can be used internationally thanks to the SI system.
Hello,

We suppose the property true for n:
1²+2²+...+n²=n(n+1)(2n+1) / 6
and we are going to demonstrate that the property is true for n+1:
1²+2²+..+(n+1)²=(n+1)*(n+2)*(2n+3)/6
![1^2+2^2+...+n^2+(n+1)^2\\\\=n*(n+1)*(2n+1)/6+(n+1)^2\\\\=(n+1)/6*[n(2n+1)+6n+6]\\\\=(n+1)/6*(2n^2+7n+6)\\\\=(n+1)(n+2)(2n+3)/6\\](https://tex.z-dn.net/?f=1%5E2%2B2%5E2%2B...%2Bn%5E2%2B%28n%2B1%29%5E2%5C%5C%5C%5C%3Dn%2A%28n%2B1%29%2A%282n%2B1%29%2F6%2B%28n%2B1%29%5E2%5C%5C%5C%5C%3D%28n%2B1%29%2F6%2A%5Bn%282n%2B1%29%2B6n%2B6%5D%5C%5C%5C%5C%3D%28n%2B1%29%2F6%2A%282n%5E2%2B7n%2B6%29%5C%5C%5C%5C%3D%28n%2B1%29%28n%2B2%29%282n%2B3%29%2F6%5C%5C)
Answer:
A. 36
Step-by-step explanation:
For this we almost have the following equation:

We must match the equation to zero:

From here, we clear the value of t.
We have then:

We discard the negative root because we are looking for time:
Answer:
it will take him to reach the ground about:

seconds
Answer:
x = 2
Step-by-step explanation:
multiply (16/48) by 6 to get rid of the fraction and then you get x = 2