Let the radius of the circle be r. Then the line from the external point through the center of the circle which extends to the far point on the circle has length 3r .By the tangent - secant theorem
t^2 = 3r * r = 3r^2 ( where t is the length of the tangent).
So t = √(3r^2) = √3r answer.
Percent is parts out o 100
42.5%=42.5/100=0.425
'of' means multiply
20.57 is 42.5% of ? means
20.57=0.425 times ?
divide both sides by 0.245
48.4=?
20.57 is 42.5% of <u>48.4</u>
Answer: 
Step-by-step explanation:
The Slope-intercept form of the equation of the line is:

m: is the slope.
b: the intersection of the line with the y-axis.
The equation of the line
has:

If both lines are parallel, then their slopes are equal. So the slope of the other line is:

To find "b", substitute the given point and the slope into
and solve for "b":

Then the equation of this line is:

Answer:
a=-29/14
Step-by-step explanation: