Determine which functions have two real number zeros by calculating the discriminant, b2 – 4ac. check all that apply. a. f(x) = x2 + 6x + 8 b. g(x) = x2 + 4x + 8 c. h(x) = x2 – 12x + 32 d. k(x) = x2 + 4x – 1 e. p(x) = 5x2 + 5x + 4 f. t(x) = x2 – 2x – 15

Which of the following is true for the relation f(x)=2x^2+1

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

What is the missing statement in step 4? ? rts ? ? vtu and ? rtu ? ? vts ? rts ? ? rvs and ? rtu ? ? stv ? vrs ? ? vru and ? usr ? ? usv ? vur ? ? vus and ? uvs ? ? sru