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alexira [117]
3 years ago
6

A valid password on a Web site contains 2 letters (A-Z, 26 total), followed by 3 digits (0-9). Letters and numbers can be repeat

ed. The number of possible passwords equals _____.
Mathematics
1 answer:
shusha [124]3 years ago
6 0
To determine the number of possible passwords one can make out of the conditions in the given, we use the Fundamental Principles of Counting. There are 26 letters that can be used for the first character of the password. The same holds true for the second character. For the next three characters, there are 10 possible numbers in each slot. Multiplying the five numbers, we get 676,000. Hence, one can make 676,000 passwords. 
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Answer:

D: All fractions containing integers are rational numbers.

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3 years ago
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Write an equation for a circle with<br> a center at (9 -2) and has a<br> radius of 7.
fenix001 [56]
The equation of a circle is given as:

(x-a)^2 + (y- b)^2 = r^2  where (a, b) is the center.

(x-9)^2  = x^2 -18x + 81 - ----(i)
(y+2)^2 =y^2 + 4y +4      ------ (ii)
r^2 = 49                          ------ (iii)

Adding equation (i) and (iii) 
x^2 + y^2 - 18x + 4y + 85 -----(iv)

Equating equation (iv) and (iii)

 <span>x^2 + y^2 - 18x + 4y + 85 = 49

Arrange the equation:

</span> <span>x^2 + y^2 - 18x + 4y + 36 = 0
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I hope this helps

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8 0
3 years ago
(-2h3n2)(-5h2n2)<br> How
IRINA_888 [86]

Answer: 9h x 8n^2

we rearrange this underneath the question (-5h-2h) (2nx3n)(2+2) or if 2^2 see explanation. It must therefore be 7h6n4

Step-by-step explanation:

if its ^2 )(power2) then the second reasonable answer is (7h-2h)(2n^2 x 2n^2)=9h x 4n^2 x4n^2 =9h 8n^2 or 17hn^2 but i leave as 9h 8n^2

You can expand only if multiplying 9hx4 for example but not combine the letters. The questions that ask you to mix are much different to this. but if you want to add them 9h+8n^2 =17hn^2

3 0
3 years ago
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Natalija [7]

Answer: 0.04 meters

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Convert cm to meters by dividing the length by 100.

4/100= = 0.04

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3 years ago
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Number 6 plz plz plz help
vagabundo [1.1K]

you could tell if it is even or odd by how many number are odd and how many are even...majority wins...

13 odd

45 odd

24 even

17 odd

hope i can help,and have a nice day!! :)

7 0
3 years ago
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