Shelby drew a map of the Appalachian Trail. The scale was 5 centimeters represents 400 kilometers. The map shows the Appalachian Trail to be 43.65 centimeters. What is the actual length of the Appalachian Trail?

3492km

Step-by-step explanation:If 5cm represents 400km on the scale, and the map shows 43.65cm then,

Let 5cm 400km

43.65cmu

Hence by cross multiplication,

5cmu=43.65cm × 400km

U =(43.65cm ×400km)/5cm

=(17460/5)km

=3492km

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

just take the area of the square and then the area of the circle then subtract the circle area from the squares area

step-by-step explanation: