Answer 20 I just did that question
Yes it is. Input the numbers into the pythagorean theorem,

and if they equal each other it is a right triangle.
Answer:
3.491
Step-by-step explanation:
move the decimal over 3 places.
Answer:
3/8 simplified is still 3/8 (0.375 in decimal form)
9/64 simplified is also still 9/64 (0.140625 in decimal form)
Step-by-step explanation: