Answer:
You are correct it is B
Step-by-step explanation:
To find the solution we will first find the difference between each number and mean, and then substitute the value in the formula of standard deviation.
The standard deviation is 8.4477 and the variance is 71.40.
Given to us
- Test scores of Adimas = (76, 87, 65, 88, 67, 84, 77, 82, 91, 85, 90)
- Mean = 81
<h3>Standard Deviation</h3>
difference between each number and mean,
= 25 + 36 + 256 + 49 + 196 + 9 + 16 + 1 + 100 +16 + 81
= 785
<h3>Variance</h3>
Variance = 
= 71.40
Hence, the standard deviation is 8.4477 and the variance is 71.40.
Learn more about Standard Deviation:
brainly.com/question/12402189
Answer:
C) The total number of about uniforms needed is 60 x 80 uniforms.
Step-by-step explanation:
The Number of total stores the owner has = 64 stores
The number of employees uniform needed in 1 store = 79 uniforms
Now, 64 is Rounded off to about 60.
and 79 is Rounded off to about 80.
⇒ The total number of uniforms in 60 stores = 60 x ( uniform in 1 store)
= 60 x (80 uniforms)
or, the expression of total uniforms needed = 60 x (80 uniforms)
Hence, the total number of about uniforms needed is 60 x 80 uniforms.
I think you have to add it or multiply it. I’m not sure
Answer:
x2-20x+100
Step-by-step explanation:
You have to factor the expression in order to get your answer
Do this by expanding out the expression: (x-10)(x-10) Then factor by multiplying each of the components! Use the FOIL acronym to help you. FOIL stands for First, Outer, Inner, Last. Meaning multiply the first numbers of the expressions together, then the outers, then the inner two numbers, then the last two numbers of the expression.
Multiply x and x to get , multiply x and -10 to get -10x, multiply -10 and x to get -10x, multiply -10 and -10 to get 100. Add them all together: . Then combine like terms
