Answer:
and 
Step-by-step explanation:
Given
Bisector: CD
of Line AB
Required
Apply Pythagoras Theorem
From the question, CD bisects AB and it bisects it at D.
The relationship between AB and CD is given by the attachment
Considering ACD
From the attachment, we have that:



By Pythagoras Theorem, we have

Considering CBD
From the attachment, we have that:



By Pythagoras Theorem, we have:

Answer:
A
Step-by-step explanation:
bc it's the most simple option for roxanne
What you first need to do is make an equation. Then plug that equation into photomath and you get your answer
Answer: He bought 7 pens.
Step-by-step explanation:
21/3 = 7