What is the standard deviation of the data set

5, 9, 11, 4, 8, 9, 12

round the answer to the nearest tenth.

A. 2.7

B. 2.9

C. 3.0

D. 8.2

a business Spa a lot of 2500 lamps for $50,000 and wants to sell them at a 15% profit how much should each lamp cost

Riley is saving up to buy a new television. She needs a total of $1,008.30. Riley has saved $200.80 already and earns $80.75 per week at her job. How many weeks does Riley need to work to save enough money to buy the new television?

Broth fractions in the expression 1/3+1/3 are examples of

A Computer randomly generates an integer from 1-10. Find the Probability of the given event. Write your answer as a percent. 1. P (5) 2. P (odd Number) P (factor of 20)

8/12-4/12 it is 7th grade math mcgrawhill page 281

Triangle ABC is a right triangle where B is the right angle, AB = x, and BC = x. What could be the first step of a proof BD of the triangle divides the hypotenuse into two segments of equal length?

Tommy plotted the opposite of one. Alicia plotted the opposite of two. Which Number is greater in value? Explain.

Anita sells stuffed bunnies and puppies to a toy store. She sells each bunny for $8.00 and each puppy for $10.00. This week, Anita wants to sell more than 30 stuffed animals and needs to earn a minimum of $450.

Jimena draws a figure with two pairs of parallel opposite sides. The four sides are not all the same length, and the figure has no right angles. Which two figures could she have drawn?

Donnie is planning to purchase a new tablet for $750. The tax rate in his city is 5.75%. How much will the tablet cost him?