I believe the 4th one
an=145+an-1 and a1=20
Since angle COB is the central angle of arc CB, the measure of arc CB = 80 degrees
Answer:
y=2x-1
Step-by-step explanation:
straight line equation
y=mx + c
find gradient(m) first,use formula;
m=3-7/2-4
m= -4/-2
m=2
use one the coordinates
(2,3)
3=2(2)+c
3=4+c
c=3-4
c = -1
y = 2x - 1
I believe the answer to this is the third box
The simplest form is 3/8. this because 4 divides both sides
