By the quadratic formula,
Then
Multiply numerator and denominator by the denominator's conjugate:
Answer:
one plus one over 2 y equals x
is
1 + 1/2y = x
Step-by-step explanation:
10:30 because an hour before 11:20 is 10:20, but it was only 50 minutes, so add 10 minutes to 10:20 , and there you have it, 10:30.
Sin x is possitive in two quadrants :
quadrant I and quadrant II
in quadrant I, cos x is positive
in quadrant II , cos x is negative
so i think the answer is : quadrant II
hope this helps