The points Q, R, S and T all lie on the same line segment, in that order, such that the ratio of QR: RS: ST is equal to 6:3:1. If QT = 10, find RS.

  q

step-by-step explanation:

each line from a vertex to the midpoint of the opposite side is called a median. the point where the medians intersect, point q, is the centroid.

the centroid of δabc is point q.

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

the answer is 8/21

hope this

a long term investor

step-by-step explanation:

because he is a long term investor