Answer:Secondary sources are works that analyze, assess or interpret an historical event, era, or phenomenon, generally utilizing primary sources to do so. Secondary sources often offer a review or a critique. Secondary sources can include books, journal articles, speeches, reviews, research reports, and more.
Step-by-step explanation:
Answer:
Ben is incorrect
The solutions are x>-3 and x < 3
Step-by-step explanation:
we have
![-x^{2} +9 > 0](https://tex.z-dn.net/?f=-x%5E%7B2%7D%20%2B9%20%3E%200)
Multiply by -1 both sides
![x^{2} -9 < 0](https://tex.z-dn.net/?f=x%5E%7B2%7D%20-9%20%3C%200)
Adds 9 both sides
![x^{2} < 9](https://tex.z-dn.net/?f=x%5E%7B2%7D%20%3C%209)
The solutions are
![x < 3](https://tex.z-dn.net/?f=x%20%3C%203)
and
-----> Multiply by -1 both sides ----> ![x > -3](https://tex.z-dn.net/?f=x%20%3E%20-3)
therefore
The solution is the interval (-3,3)
Ben is incorrect
Answer:
The probability is 1/9
Step-by-step explanation:
The probability of rolling a 5 the first time is 1/6
The probability of rolling a number greater than 2
Numbers greater than 2 are 3, 4, 5, 6
So the probability of rolling a number out of these four is 4/6
So the probability of rolling a five for the first time and the probability of rolling a number greater than 2 the second time will be
1/6 * 4/6 = 4/36 = 1/9
Answer:
(x, y, z) =(1, -1,2)
Step-by-step explanation:
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