Bob has 6 yellow pencils and 5 blue pencils. what is the ratio of blue pencils to yellow pencils? (write your answer using the a: b format. for example, 1: 1.)

What is the distance from zero if a quadratic function has a line of symmetry at x=-3 and a zero at 4

Prove that 16^4-2^13-4^5 is divisible by 11.

The bottom of ignacio's desktop is 74.5cm from the floor. ignacio's 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