will mark brainleist answer 30 ponits plus the 5 at beginning Shelby drew a map of the Appalachian Trail. The Scale was 5 centimeters represents 400 kilometers. The map shows the Appalachian Trail to be 43.75 centimeters. What is the actual length of the. Appalachian Trail?

-2

7 - 9 = -2

reversed:

-2 + 9 = 7

the one below it is a function

the answer would be d.

step-by-step explanation:

move all variables to the left side and all constants to the right side

(x−3)^2+(y−1)^2=16

this is the form of a circle. use this form to determine the center and radius of the circle.

( x − h ) 2 + ( y − k ) 2 = r 2

match the values in this circle to those of the standard form. the variable   r   represents the radius of the circle,   h   represents the x-offset from the origin, and   k   represents the y-offset from origin.

r = 4

h = 3

k = 1

the center of the circle is found at   ( h , k ) .

center:   ( 3 , 1 )

these values represent the important values for graphing and analyzing a circle.

center:   ( 3 , 1 ).

radius:   4