What is the average of the first 50 positive odd integers

Use the diagonals to determine whether a parallelogram with vertices u(2,−2), v(9,−2), w(9,−6), and x(2,−6) is a rectangle, rhombus, or square. give all the names that apply.

This is about circle theorems. someone asap : (

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.