Translate the words into a mathematical expression. two-thirds of the sum of 122 and 98. 99 divided by 10, then multiplied by the sum of 84 and 3. compare the two expressions. (10 + 5) and 10+53 (16 – 4) + 9 and (16 – 4)

Need ! a certain ultraviolet ray has a frequency of 1 × 1016 hz, and a certain infrared ray has a frequency of 2 × 1012 hz. which of the following is true? a. the frequency of the ultraviolet ray is fifty thousand times the frequency of the infrared ray. b. the frequency of the infrared ray is fifty thousand times the frequency of the ultraviolet ray. c. the frequency of the ultraviolet ray is five thousand times the frequency of the infrared ray. d. the frequency of the infrared ray is five thousand times the frequency of the ultraviolet ray.