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Answer:
39 degrees
Step-by-step explanation:
Subtract 90 (for the right angle) and 51 (the given angle) from 180, since all angles in a triangle add up to 180.
180-90-51 = 39
You need to be more specific
Answer:
Step-by-step explanation:
ax^2+bx+c
-b +- sqaure root of b^2 -4ac/2a
-2 +- square root (2)^2-4(2)(-1)/2(2)
-2 +- square root 4+8 /4
-2 +- 2 square root 3 /4
reduce
-1 +- square root 3/2
If this problem is expecting you to show a graph photo, then a dependable website for a problem like this would be www.desmos.com. message me if you're not sure how to use it.