Lisa ran 3 miles in 1 hour how long did it take lisa to run one mile

To run 1 mile it will take 1/3 of an hour or 20 minutes

Step-by-step explanation:

We can use ratios.  Take the number of miles and divide by the number of hours

3 miles         1 miles

=

1 hours         x hours

Using cross products

3x = 1 * 1

Divide each side by 3

3x/3  = 1/3

x = 1/3 hours

We know 1 hour = 60 minutes

1/3 of 1 hours = 1/3 *60 = 20 minutes

To run 1 mile it will take 1/3 of an hour or 20 minutes

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.

step-by-step explanation: