2 years ago

Х = 4 3х — у = -1 How to solve ?

Mathematics

1 answer:

elena-s [515]2 years ago

7 0

3+ - 1 I hole this helped

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an internet passcode consists of a digit followed by a letter, followed by another digit. Assuming the digits are 0-9, how many

anyanavicka [17]

There are 10 single-digits (0 through 9) and 26 letters (A through Z)

For the first slot there are 10 choices which represents selecting a single digit
For the second slot there are 26 choices because we choose a single letter here.
Finally there are another 10 choices for the third slot (assuming repeats are allowed)

Multiply the values out: 10*26*10 = 260*10 = 2600

Answer: 2600

8 0

3 years ago

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