Answer:
50
Step-by-step explanation:
since all angles add up to 180
and since this is a right triangle the square in the corner is 90 degrees
so 40+90+x=180
130+x=180
subtract 130 from both sides
130-130+x=180-130
x=50
Hope that helps :)
Answer: B
Step-by-step explanation:keep changing flip
Step-by-step explanation:

Hope it will help :)
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Answer:
it gets multiplied by the value of the root .that is just more concise way of writing it .
Step-by-step explanation: