Atetrahedron is a triangular pyramid whose four faces are identical equilateral triangles. the total lateral surface area is 93 square centimeters. find the surface area of the tetrahedron. quick plz

Solve for x where 0 equation: cot^2x+2cotx+1=0

Acompany that makes? hair-care products had 5000 people try a new shampoo. of the 5000 ? people, 35 had a mild allergic reaction. what percent of the people had a mild allergic? reaction?

Given: lkm jkm, clmk prove: alkmajkm jmk. choose the word that completes the sentence correctly. proof: lkm jkm and lmk * umk are given. km km by the property of congruence. equivalence symmetric reflexive transitive