Answer:
4 * side = 4s is the perimeter
sum of all sides = s + s + s + s = 4s
Step-by-step explanation:
Answer:
the answer is c
Step-by-step explanation:
40x + 80 < 400
40x < 320
x < 8
E [x] = Expected value of X
μ = average
σ = standard deviation
V (X) = Variance
σ = (V(X)) ^ 0.5
E [X] = X * P (x)
Assuming that the number of books purchased is a discrete random variable with mean μ = E [X]
Then the variance of X can be written as V (X) = E [X-μ]^2
We started finding the average μ
μ = 0 * 0.20 + 1 * 0.30 + 2 * 0.50
μ = 1.3
Once the average is found, we can calculate the value of the variance
V (X) = 0.20 * (0-1.3) ^ 2 + 0.30 * (1-1.3) ^ 2 + 0.50 * (2-1.3) ^ 2
V (X) = 0.61
Now we know that from the variance the standard deviation can be obtained by doing:
σ = (V (X)) ^ 0.5
Finally
σ = 0.781
Answer:
19 + 3a
Step-by-step explanation:
19 + 6a ÷ 2
If we want to evaluate this equation, there's really only one step.
We need to divide our 6a by our 2.
1. 19 + 6a ÷ 2 => 19 + 3a
So 19 + 6a evaluated is 19 + 3a.
Feel free to give brainliest.
Have an amazing day and happy Thanksgiving!
I'm going to assume that you meant to write: The square of a number exceeds that number by 12. What are the two possible solutions.
In other words x² = x + 12
4² is 16.
4 + 12 = 16
(-3)² is 9
-3 + 12 = 9
Hope this helped!
~Just a girl in love with Shawn Mendes