Which of the following choices is the standard deviation of the sample shown here

18, 19, 20, 21, 22

A) 2.5

B) 20

C) / 2.5

D) / 2

E) 2

What is the radius or diameter of r=11cm

What are the solutions of the equation x6 + 6x3 + 5 = 0? Use factoring to solve B. x=-3 sqrt5 and x = - 1 is the correct answer

How many positive integers k are there such that 100k?

Imagine you own a lawn-mowing business. Which visual representation would best show how much your income varies over the course of an entire year? a. pie graph b. bar graph c. line graph

3x+4 1/4-2x - 2 1/2 What is the answer

Which of the following expression is equal to - 3x^2-27

Describe the one basic move you need to change the equation 2x + 17 = 36 into each equation. a. 2x + 13 = 32 b. 2x - 12 = 7 c. 2x = 19 d. 6x + 51 = 108 e. x + 8.5 = 18 f. 5x + 17 = 3x + 36 h. x + 17 = 36 - x g. 2x - 19 = 0

identify the type of sample. A magazine asks its readers to call in their opinions regarding the quality of their articles A.) systematic B.) simple random C.) convenience D.) self selected

How do i solve this fraction word problem? There are 24 children in a kindergarten class. Three-quarters of them can already write the whole alphabet. How many children can write the alphabet?

How large in square meters is the land area of australia (2941526 mi 2) ?