Answer:
2. ad is the angle bisector of angle a
3. ad is perpendicular to bc
4. both are right angles as given
5. common
6. ASA congruence
The midpoint formula is basically just the average of the two points. Here it is:

Then, you plug the points in. The answer is (-13,-5/2) or
C
Answer:
the answer for this question is A there is 4 positive and 7 negative.
Step-by-step explanation
Complete Question
The complete question is shown on the first uploaded image
Answer:
The value is 
Step-by-step explanation:
From the question we are told to obtain the area to the of the z-score 1.39 and to the left of the z-score 1.53, this is mathematically represented as

From the z table on the question the area under the normal curve to the left corresponding to 1.53 and 1.39 is

and

So

=> 
Positive because you will said that has the charged is about $2.50