Delta math (z^r)^2r i need to simplify

Write a fraction less than 1, which has a denominator of 6 and is greater than 3/4 plz answer !

The perimeter of ? cde is 55 cm. a rhombus dmfn is inscribed in this triangle so that vertices m, f, and n lie on the sides cd , ce , and de respectively. find cd and de if cf=8 cm and ef=12 cm. the answer is not cd=20 and de=15. i have tried that one, it does not work.

Complete each statement. an event with a probability of 0 is an event with a probability of 1 is