James is given the diagram below and asked to prove that D & ZF. What would be the missing step of the proof?
Given: DEFE, and Ed forms the angle bisector of ZDEF.
Prove: ZD XZF
E
A
D
Statements
1. DE EF
2.
3. EO EO
4. ADEO AFEO
5. ZDE ZF
Reasons
Given
Definition of an angle bisector
Reflexive Property of Equality
SAS Congruency Theorem
Corresponding parts of congruent
triangles are congruent

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?