A puppy is tied to a leash in a back yard.

His leash is 3 meters long, and he runs around in circles pulling the leash as far as it can
go.

What is the approximate distance the puppy runs in one lap?

A. between 13 and 14 meters

B. between 15 and 16 meters

C. between 17 and 18 meters

D. between 18 and 19 meters

12

step-by-step explanation:

a triangle's   full angle is 180 degrees so 180 - 156 = 24. 24/2=12

answer: the answer is ann

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.