I've been waiting for 3 hrs+ me ! let line pa and line pc be tangents from p to a circle. let b and d be points on the circle such that b, d, and p are collinear. prove that ab*cd = bc*da.

How can you decide witch operations to use to slice a two step equation

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!