Answer:
Step-by-step explanation:
the first one is correct
Expplanation and Answer:
y=mx−7
Swap sides so that all variable terms are on the left hand side.
mx−7=y
Add 7 to both sides.
mx=y+7
Divide both sides by m.
m
mx
=
m
y+7
Dividing by m undoes the multiplication by m.
x=
m
y+7
Your answer is 158 hope this helps.
Answer: 6
SOLUTION
∵segment
is tangent to the circle at point C.
∴∠MCA=∠MCB=90°
Suppose 
From the Pythagorean theorem
MA²=9²+
²
MB²=4²+
²
∴MA²+MB²=AB²
i.e. 
We conclude that 
The answer would be B. because 483.51-246.17=237.34