4x + y = 7
y = -4x + 7
using y = mx + b
b being your y intercept, (0,7)
A.
Circumference = π * diameter or
π * 2*radius (diameter = 2 * radius).
So you would divide by π to get the diameter, then divide by 2 to get the radius. So A.
Answer:
b=4
Step-by-step explanation:
First we find the measurement of dark dot .
ANd for that we have to use the formula of the angle formed by the intersection of chord .
Let the dark dot be t.
So we have

t and z are linear pair and sum of angles of linear pair =180 degree.
So we get

Answer:
The answer would be 50% or 1/2
Step-by-step explanation: