Answer:
About 30 min.
Step-by-step explanation:
Since it takes 10 min to walk a half of mile, it will take 20 min to walk a whole mile.
Since we will be walking one and a half miles, it should take about 30 minutes.
Hope this helps.
Answer:
It can be 5 or 3
Step-by-step explanation:
let x = that number
x * (x - 8) = -15
xx - 8x + 15 = 0
xx - 3x - 5x + 15 = 0
x(x - 3) - 5(x - 3) = 0
(x - 5)(x - 3) = 0
then x = 5 or x = 3