What is the difference of the given values to the correct level of precision?
8.501 cm
–0.27 cm

A. 8 cm
B. 8.2 cm
C. 8.23 cm
D. 8.231 cm

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

Icould really use some with this question.

Which of the binomials below is a factor of this exression? 16x^2+40xy+25y^2 a.4x-5y b. 2x-5y c.4x+5y d.2x+5y