The points T, U, V and W all lie on the same line segment, in that order, such that the ratio of TU : UV:VW is equal to 5:1:1. If TW = 21, find VW.
HELPPP

Can (3,5 and square root 34) be sides on a right triangle?

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Evaluate cos2θ for cosθ = square root of 3/2