Answer:

Step by step explanation:
![y=\displaystyle \int_{0}^x 2t^2 dt=\dfrac 23\left[t^3\right]^{x}_0=\dfrac 23 x^3\\\\\ y'= \dfrac 23 \cdot 3x^2 = 2x^2](https://tex.z-dn.net/?f=y%3D%5Cdisplaystyle%20%5Cint_%7B0%7D%5Ex%202t%5E2%20dt%3D%5Cdfrac%2023%5Cleft%5Bt%5E3%5Cright%5D%5E%7Bx%7D_0%3D%5Cdfrac%2023%20x%5E3%5C%5C%5C%5C%5C%20y%27%3D%20%5Cdfrac%2023%20%5Ccdot%203x%5E2%20%3D%202x%5E2)
Answer:
5 1/2 feet
Step-by-step explanation:
44/8 = 5.5
Answer:
83.6 mL
Step-by-step explanation:
Given 440 mL of 19% acid solution. This means the whole volume of this acid solution is 100%. Let x mL be the volume of pure acid in this solution.
Then

Write a proportion:

Cross multiply:
