The frequency distribution below shows the grade distribution of students' first exam in a history class. Find the standard deviation of this distribution. Round your answers to one decimal place. F= Frequency, G=grade f=3 g 46-56
f=6 g 57-67
f=10g 68-78
f=7 g 79-89
f=4 g 90-100

Perform the indicated operation. 8/a - 6/a + 7/a

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

Need an artist designed a badge for a school club. figure abcd on the coordinate grid below shows the shape of the badge: the badge is enlarged and plotted on the coordinate grid as figure jklm with point j located at (2, -2) and point m is located at (5, 4). which of these could be the coordinates for point l? a. (2, 4) b. (8, 4) c. (5, 1) d. (5, 7)