The number 39.91894 rounded to four decimal places is _?

Which of those sequences is a geometric sequence

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)