Answer:
Step-by-step explanation:
When working with 45-45-90 triangles the hypotenuse is the same as the other legs multiplied by root 2. Therefore if you need to find the legs and already have the hypotenuse, divide the hypotenuse by root 2.
10/ sqrt(2) = 7.1 is the rounded answer.
to double check your work just multiply 7.1 by the square root of 2 and you'll get <em>close</em> to 10. (because the answer is rounded and not exact.)
It would be D because the division symbol represents subtraction when your expanding a fraction like this one. Hope that helped.
7:50 am
60 minutes before 8:40 would be 7:40 so 10 minutes after that would be 7:50