Name at least two benefits of using models in science.

Models make concepts more tangible. They also make it possible to notice patterns, develop or revise representations, and predict or explain events or relationships.

This is the exact answer on EDGEN

answer: which of the following best describes greek tragedy?

a) it was lighthearted and included songs and elaborate costumes.

b) the plays included political statement that mocked leaders and their policies.

c) the lead character suffers because of personal flaw.

d) the gods intervene negatively in the lives of men.

the answer would be d

explanation:

the perimeter of a triangle is 69 cm. side a is 5 cm shorter than side b. side c is twice as long as side a. find the length of each side. i need to know how to do it in 2 equations.  

equations:

a = b-5

c = 2a

a + b + c = 69