Answer: B
Step-by-step explanation:
A is incorrect because going from -10 to 10 is not 0, it is 20.
C is incorrect because 21 km from sea level is adding 21.
D is incorrect because the total distance biking to school and back is actually 6.2.
B is correct because buying an item for the same price then selling it for the same price results in no increase in profit but consistency therefore being 0.
Answer:
11 degrees
Step-by-step explanation:
The sum of the interior angles of a triangle is 180 degrees.
From 180 degrees we subtract the sum of 102 degrees and 67 degrees, obtaining 11 degrees (first answer choice)
Hi there!

Use the chain rule:
f(g(x)) = f'(g(x)) · g'(x)
Thus:
dy/dx sin(x) = cos(x)
dy/dx cos(x) = -sin(x)
Use the chain rule format:
f(x) = sin(x)
g(x) = cos(x)
cos(cos(x)) · (-sin(x))
-sin(x)cos(cos(x))
A (-2. 7) -4. 9
B (-2.7+(-.4- 4.5)
Only these A and B are equal to the expression above.
The answer is C: 36%
20/55 = .3636 repeating