A security code consists of 9 digits (0–9), and a digit may not be used more than once. How many possible security codes are the
re?
2 answers:
Answer:
a
Step-by-step explanation:
Answer: 362880 (?)
Step-by-step explanation:
I believe this question is asking for a permutation, in which I plugged it into my graphing calculator as nPr(9,9) and got that answer.
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Answer:
If the length of each side of a triangle is doubled then its perimeter is also doubled.
No they are not.
48/2 = 24, 60/3=20.
24/=20. (24 does not equal 20)
Answer:
Let the original price be x
70% of x = 14
70x/100 = 14
70x/14 = 100
5x = 100
x = 100/5
x = 20
Therefore the original price = $20
Hope this helps!
Answer:
b
Step-by-step explanation:
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