A teacher surveyed his class about how many wore watches and how many wore rings. The Venn diagram shows her results. If a person from the class is randomly selected, what is the probability that person wears a watch given that they wear a ring? P( watch | ring )
A)7/12
B)1/6
C)1/12
D)2/7

square pyramid

step-by-step explanation:

square prism looks like nothing like that

triangular prism has a rectangular base instead of a square base

tetrahedron has a triangular base

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x