On a true or false history test with 20 question Susie randomly choose answers which of the following tools would be the best model in this situation? 1: a spinner with 5 equal parts
2: a fair coin
3: a spinner numbered 1 through 7
4: a fair number cube ​

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

Hii1977 cleaner shrimp are a species of shrimp that clean parasites from other organisms. fish allow the shrimp to eat the parasites in their mouth. the shrimp get a source of nutrition. the relationship between the shrimp and the fish is this association indicates that for the smaill aneser arecommensal,mutualistic,or parasitic for the begger one the anser are the shrimp and fish benefit each other , the shrimp harm the fish, or the fish do not benetit from the shrimp

The figure below shows rectangle abcd and the triangle eca on a coordinate plane.which of the following expressions represents the perimeter of triangle of triangle eca in units