Find the length of x. Assume that lines which appear to be tangent to the circle are tangent A) 36
B) 42
C) 48
D) 54

Geometry ? i don't know how to do any of these.

Antonia and carla have an equivalant percentage of green marbles in their bags of marbles. antonia has 4 green marbles and 16 total matbles. if carla has 10 green marbles , how many total marbles does carla have

Find the multiplicative inverse of 8-12i