Write a proof.
Given DEBF is a parallelogram.
AE =CF
Prove ABCD is a parallelogram

Can someone me out here number 4 plz

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

Meghan has created a diagram of her city with her house, school, store, and gym identified. a. how far is it from the gym to the store? b. meghan also wants to walk to get some exercise, rather than going to the gym. she decides to walk along arc ab. how far will she walk? round to 3 decimal places.