First one..................
Answer:
it's A
Step-by-step explanation:
is a positive correlation
(4n+1)=(2n-9)
the sum of four times a number and one is equal to the difference of twice the number and 9
Answer:

Step-by-step explanation:
The angles are vertical since they form from two lines crossing at a point and they share a same vertex.
Vertical angles are equal so



Answer is 86.47 cm hope helped