Answer:
A: -11
B: Two complex solutions
Step-by-step explanation:
The discriminant of this equation is 3^2-20=9-20=-11. Since the discriminant is negative, its square root will be an imaginary number, and there will be two complex solutions. Hope this helps!
Two conditions under which we can assume that the sample means follow a normal distribution are as follows:
1). If the sample size is large enough, n greater than or equals 30, the sampling distribution is approximately normal regardless of the shape of the population.
2). In order to be considered a normal distribution, a data set (when graphed) must follow a bell-shaped symmetrical curve centered around the mean.
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Answer:
f(2)=0
Step-by-step explanation:
You plug in 2 for any X's in the equation
f(2)=2^2-4
One of his
greatest contributions to the Persian Empire was the way he promoted tolerance
for all religions throughout the empire. The Persians left great legacies to humanity such as the construction of
the first canal, the postal system, and the creation of large gardens in
temples and cities and the tradition of carpets that are used today in homes
around the world, besides his great tolerance to different cultures and
religions.
