The distance around the tire or a motorized scooter is 21.98. the tires make one revolutioneer 1/10 second. find the speed of the scooter in miles per hour.

for every 1/10 second it travels 21.98 inches

for a full second it travels 21.98 x 10 = 219.8 inches

for 1 minute it travels 219.8 x 60 = 2820 inches / 12 = 235 feet per minute

 235*60 = 14100 feet per hour

5280 feet per mile

14100/5280 = 2.67 = 2.7 miles per hour

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.

2y+y=5

add 2y and y