I need help with this problem asap 1/3 + 5 3/4=?

List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f(x) between x = 0 and x = 10.

Answer asap! urgent! will give brainliest!

Ineed with 8,9 and 10 love ya guysss