O is the origin, OP = p and OQ = q. Z is a point on PQ such that PZ : ZQ = 5 : 2.
Work out, in terms of p and q, the position vector of Z.
Give your answer in its simplest form.

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.

How many verticies does a triangular prims have

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction