Find the measure of the angle between the vectors 〈6, –3, 1〉 and 〈8, 9, –11〉 A:90°
B:30°
C:84.8°
D:102.6°​

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

Brainliest ! which of the coordinates are not of th vertices of the feasible region for the system of inequalities y≤4,,x≤5,x+y> 6 a(2,4) b(0,6) c(5,4) d(5,1)

1/2+1/6-3/4 simplify the given expression leaving the answer in improper fraction form.