Answer: 34%.
By definition of normal distribution, ≈68% of the data is within 1 standard deviation of the mean. Therefore 68% of IQs are between 85 and 115, and half of that is on the lower end, 85 to 100.
And obtuse angle is greater than 90°
Answer:
A≈16.65
Step-by-step explanation:
h Height 3
AB Base area 4