Ashley is preparing for a horse riding competition. she has trained her horse for 5 hours and has completed 195 rounds. at what rate has ashley ridden her horse in rounds per hour?

1:39

Step-by-step explanation:

well divid 195 by 5 to get how many rounds per hour

so it would be 39

so it be 39 rounds per hour now put it as a rate --> 1:39

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)

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