Answer:
18. x² + x - 4
20. or
22. x² + 2x - 2
Step-by-step explanation:
For some reason my work was unable to be submitted so please see attachment for detailed explanation
Of the 50 shapes in a set, 20 of them are squares. In a circle graph, what would be the measure of the central angle for the sec
1 answer:
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Step-by-step explanation:
Permutation :The number of ways to choose a sample of r elements from a set of n distinct objects where order does matter and replacements are not allowed.
Factorial : There are n! ways of arranging n distinct objects into an ordered sequence.
Considering a situation when n = r in a permutation, nPr reduces to n!, a simple factorial of n.
Proof: 3P3 = 3!
n = 3 and r = 3
But 0! = 1
3P3 = 3!
