Then a is Half of 45 wich is 22.5 I believe.
Answer:
35°
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°
subtract the sum of the 2 given angles from 180° for missing angle
missing angle = 180° - (90 + 55)° = 180° - 145° = 35°
Answer:
16%
Step-by-step explanation:
The mean is 25, and the standard deviation is 1.
26 is 1 standard deviation above the mean.
According to the empirical rule, 68% of the population is between -1 and +1 standard deviations. That means that 32% is less than -1 or greater than +1 standard deviations. So half of that, or 16%, is greater than +1 standard deviations.
Step-by-step explanation:
is the exterior angle of the given 
Therefore, by remote exterior angle theorem.
