Julie spent 2/3 of an hour running and 5/6 of an hour swimming. how much longer did she swim than run?

Julie spent 10 min more swimming than she did running.

Step-by-step explanation:

Great question, it is always good to ask away and get rid of any doubts that you may be having.

Based on the question it would be good to start by turning all the information into a common format. In this case turning all the values into minutes would be the most ideal. To do this we multiply each amount of hours by 60 min. Like so,

We can see from the calculations above that Julie spent 10 min more swimming than she did running.

I hope this answered your question. If you have any more questions feel free to ask away at .

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240

its the second choice.

step-by-step explanation:

the elements in the range will be 7 less than the elements in the domain.