Find x.

A. 3

B. 2

C. 4.25

D. 3.75

E. 4

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.

Enter the missing numbers in the boxes to complete the table of equivalent ratios. time (min) distance (km)? 36 9? 1512 ?

The area of a circle is equal to 1 dm². find the radius of the circle.