What is the mean of the data set?

12, 17, 16, 10, 20, 13, 14, 14, 12, 12, 19, 18

a.14.00

b.14.75

c.13.50

d.15.75

What term best describes a line ans a point that lie in the same plane

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.

Ithink i know it but i want to be sure so can you me out ?