Answer:-4
Step-by-step explanation: the square root is 4, so reverse in to negative, and the answer is -4.
Answer:
its basically the average
Step-by-step explanation:
To find it,add up all the numbers and then the answer that you get,you divide it by the amount of numbers you added up...
Hopefully this helped
According to empirical rule, the area under the normal distribution or "bell-shaped curve", when plotted as a function of the z-parameter can be defined in terms of percentages.
The z-parameter (or z-score) is defined as
where
x = value of random variable,
μ = the mean,
σ = standard deviation,
The total area under the curve = 1.
The curve below shows that within 2 standard deviations from the mean, the total area under the curve is 95% of the total area.
Answer:
95%
Answer:
12.99km
Step-by-step explanation:
Using the formula
C=2(pi)(r)
Because triangles also equal a total of 180 degrees, the answer is B