The track at bronwyn’s school is 1/4 mile around. if she can do 3 laps in 4 1/2 minutes, how fat is she running in miles per hour

10 mph

Step-by-step explanation:

Find the average speed:

1/4 mile / lap       3 laps          3/4 mile          3/4 mile        3 miles

* = = =

         1                 4.5 min        4 2/4 min        18/4 min       18 min

Now mult. this result by the conversion factor  60 min   /   1 hr  = 1:

1 mile       60 min

* = 10 mph

6 min         1 hr

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11-1 > 1-1+a

-12 > a