What is the factored form of the polynomial?

x2 + 9x +20

(x - 4)(x - 5)
(x - 2)(x - 10)
(x + 4)(x + 5)
(x+3)(x + 10)

What links the two strands in a dna helix together in the middle? a. phosphate groups b. sugar rings bonded together c. proteins d. bases with hydrogen bonds

Migration is a. the movement of organisms from a native location to a foreign location b. the movement of organisms from a foreign location to a native location the movement of organisms from their water supply to their food supply d. the seasonal movement of organisms between locations c. select the best answer from above

Construct at least two possible hypotheses for the student’s experiment.