4. What is the frequency of a wave that has a wave speed of 80 m/s and a wavelength of 0.20 m?

Two numbers have a sum of -19. one number is x. what expression represents the other number?

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.

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart