An island consists of four kinds of people: Tetas, Jekas, Frekas and Hekas. The following information is known:
Every Heka is either a Teta or a Jeka, but not both
All Frekas are Jekas
No Frekas are Tetas

Consider the following statements:
1. No Tetas are Jekas
2. Some Hekas are Frekas

Which of these statements are necessarily true based only on the information above?

The ancestors of horses possessed feet with five digits. over time, with the development of grasslands, the digits fused and formed hooves. what evolutionary advantage did this transformation serve? a. it allowed them to climb rocky surfaces with ease. b. it allowed them to graze better. c. it enabled them to run faster from predators. d. it let them see clearly through the grasslands. e. it made them taller.

The equation 24x2+25x−47ax−2=−8x−3−53ax−2 is true for all values of x≠2a, where a is a constant.what is the value of a? a) -16b) -3c) 3d) 16

Ricks boss often appriciates him for his work.how is rocks boss affecting his proformence