Combinations = n! / (n - r)! r!
In this case:
n = 4
r = 3
Combinations = 4! /(4-3)! 3! = 24/(1)(6) = 24/6 = 4
Answer:
4 arrangements
Find the measure of each angle. m∠BAC= m∠CAD=
2 answers:
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To solve this, set up the equation, 90% of x being .9*x=57. Then, solve for x, x=57/.9=
=6.333