Two students finish a conversation and walk away from each other in perpendicular directions. If one person walks at 4 ft/sec and the other at 3 ft/sec, how fast is the distance between the two changing at time t = 10 sec?

Geometry: determine whether segment mn is parallel to segment kl. justify your answer. jm 6 mk 3 jn 8 nl 4

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

Which expression is rational? 6. , square root two, square root 14, square root 49