PLEASE HELP! Find the variance and standard deviation. Round to the hundredth decimal place.

Class limits Frequency
2.1-2.7 15
2.8-3.4 13
3.5-4.1 8
4.2-4.8 6
4.9-5.5 2
5.6-6.2 1

step-by-step explanation:

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation:

22.83 repeating

step-by-step explanation:

137 ÷ 6 is 22.8333333 therefore we understand that 3 is repeating.

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25/14 or 1.

step-by-step explanation:

the dots mean that it has infinitely more numbers behind it