If Emilie and Jessie can skateboard 4 miles in 20 minutes. How far can they go in 60 minutes?

12 miles in 60 minutes

Step-by-step explanation:

if each 20 minute increment is 4 miles, then a 60 mile increment which is 3 times that would be 12 miles

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12 miles

Step-by-step explanation:

exa:

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3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm