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Mars2501 [29]
4 years ago
12

John is choosing a password for an account. He has decided not to use the digit 0 or the letter m. And each letter or number can

be used more than once. How many passwords of two letters followed by four digits are possible?
Mathematics
1 answer:
kap26 [50]4 years ago
4 0
<em>If this guy doesn't use the letter m, then the first and second characters of the password could be any of the 25 remaining letters.  So, the number of possible combinations of 2 letters is 25 times 25, or 625.  

If he doesn't use the digit 0, how many digits are left to choose from?

The first 2 characters of the password will be letters; after that there come four digits.  How many different combinations of 4 digits are there if 0 is not used?

To obtain the final result, mult. together that 625 and the number of possible combinations of digits just found above.</em>
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<img src="https://tex.z-dn.net/?f=%20%20%204%20%5Ctimes%20%282%20-%206%29%20%3D%20" id="TexFormula1" title=" 4 \times (2 - 6)
Brut [27]

Answer:

-16

Step-by-step explanation:

You have to start by answering the parenthesis first then continue with the question

7 0
3 years ago
Rationalize the denominator and simplify. 6 /5-3
sattari [20]

Answer:

-9/5

Step-by-step explanation:

Step 1: Take the LCM in the denominator

6/5-3

multiply the numerator and denominator by 5 to make the denominator 5.

<u>6</u>-<u>3</u> (x5)

5  1 (x5)

=<u>6-15</u>  

   5

= <u>-9</u>

   5

!!

6 0
3 years ago
How many hours will it take to complete a 76km bike ride if you go bike ride if you go 14km per hour the whole time?
soldi70 [24.7K]

To find the number of hours, divide the total distance by the speed.

Hours = 76 km / 14 km per hour

Hours = 4.529

Round the answer as needed.

8 0
4 years ago
Can some one please help me.
Otrada [13]
X = 29 and y = 101.

To find this, you need to set up an equation.

6x - 95 = 79. Once you solve this, x would equal 29.

Since 6x - 95 and y are on a straight line, they would have to equal 180. So you make another equation except you plug in 29 for x this time.

6(29) - 95 + y = 180. Once you solve this, y would equal 101.
6 0
3 years ago
Will give brainlist Very unlikely answer choices: A. 1 B. 0.01 C. 0.9 D. 0 E. 0.6 F. 0.5 G. 0.35
emmasim [6.3K]

Answer:

B) 0.01

Step-by-step explanation:

If they want to know which one is very unlikely, you could turn them into percents.

1=100%

0.01=1%

0.9=90%

0=0%

0.6=60%

0.5=50%

0.35=35%

Since 0% is "impossible", not just "very unlikely", I'd go with 1%, which is B) 0.01

This is assuming I'm understanding your question correctly, since it doesn't actually ask a question.

5 0
4 years ago
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