The test scores for a math class are shown below.
81, 85, 82, 93, 85, 84, 95, 87, 88, 91
(31. What is the standard deviation of the data set? Round your answer to the nearest tent!
2.7
0 4.4
11.6
19.5

Phillip had some bricks. he stacked them in 6 equal piles. which expression shows the number of bricks phillip put in each pile? let the variable m stand for the unknown number of bricks. m + 6 m÷6    m−6    6m

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?