The smiths want to replace the stairway that leads from their porch to their sidewalk with a ramp. the porch is 3 feet off the ground. they decide to start the ramp 12 feet away from the base of the porch to make it convenient to walk up.

a²+b²=c²

3²+12²=c²

3²=9

12²=144

√153

12.36931688 or 12.4

hope this helps

hes corect did the test

Step-by-step explanation:

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )

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step-by-step explanation: