Let S be the line segment {(x,0) : 0 ≤ x ≤ 1}. how to describe the collection of all points in the plane whose distance to S is 1/2?

Tanya has $42 to spend at the dolphin island store. tshirts sell for $7 each and a pair of sunglases sells for $6.tanya buys 3 tshirts. how many pairs of sunglases can she buys with the amount of money she has left

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Prove that quadrilateral is a rhombus.