Iam the number of red tiles in a design with red and blue tiles. the red tiles each have 3 sides. the blue tiles each have 5 sides. there are 3 blue tiles. there are 30 sides on the tiles in all. what number am i?

Which of the following is the correct ratio for converting kilograms to grams

This is about circle theorems. someone asap : (

The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.