Answer: 
<u>Step-by-Step Explanation:</u>
KCFmeans: Keep, Change, Flip
- Change: the sign <em>from division to multiplication</em>
- Flip: the second fraction
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<em>KCF is applied here!</em>
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0.75 miles in 12 minutes
0.75 * 5 miles in one hour
15 / 4 miles in an hour
she walked at 3.75 mph
this assumes she walks at the same pace for the whole time
please give brainliest
90:18
divide using 3 on both sides
90:18
30:6
10:2
now lets use 2
10:2
5:1
5:1 is the equal ratio to 90:18