Answer: what’s the question?
diameter = 7,917.5
radius (r) = 7,917.5/2 = 3,958.75
The side opposite vertex B will <em>not</em> have B as one of the letters in its designation. That is, sides AB and BC are adjacent, not opposite. Only side AC is opposite angle B.
Side AB is the <em>hypotenuse</em> of this triangle (the longest side; the side opposite the right angle).
When the calculated value of the test statistics doesn't fall on the critical region.
y = 4x + 4
(-1, 0) and (0, 4)
y - y1 = m(x - x1)
y - 0 = 4(x + 1)