-6 - (-1 + 8)
-6 - ( 7)
= -13
Answer:
0.789
Step-by-step explanation:
First, find the expected value (the mean).
μ = ∑ x P(x)
μ = (0) (0.359) + (1) (0.436) + (2) (0.180) + (3) (0.025)
μ = 0.871
Next, find the variance.
σ² = ∑(x − μ)² P(x)
σ² = (0 − 0.871)² (0.359) + (1 − 0.871)² (0.436) + (2 − 0.871)² (0.180) + (3 − 0.871)² (0.025)
σ² = 0.622
Finally, find the standard deviation:
σ = √0.622
σ = 0.789
Answer:
128
Step-by-step explanation:
Quotient means to divide. So i.e you want to work out 640÷5.
A quick trick to divide by 5 (Without a calculator) is to double the number, and the divide by 10.
so i.e we get 640x2 = 1280.
Then 1280÷10 = 128.
30% percent is what they marked up
The bag costs $3.60 so if you divide it by 6, for the six ounces, you get $.60, which is the price per ounce. So, for a two ounce bag, you have to multiply the price per ounce by the number of ounces, $.60 X 2= $1.20. So the price of a 2-ounce bag would probably be $1.20.
