Catherine ran 1/2 of a mile yesterday. shane ran 7 times as many miles as catherine. shane ran mile(s) more than catherine.

3.5

Step-by-step explanation:

1/2 times 7 is 3.5

Shane ran 3 miles more than Catherine.

Step-by-step explanation:

Shane= 7 x Catherine's amount aka 1/2 = 7 x 1/2 = 7/2

you find the difference, so you have to find the difference between the two, or 7/2 - 1/2 = 6/2. Or three miles

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i

answer: x=60