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pashok25 [27]
3 years ago
13

Outside a​ home, there is a 4​-key keypad with letters Upper A comma Upper B comma Upper C comma and Upper D that can be used to

open the garage if the correct four​-letter code is entered. Each key may be used only once. How many codes are​ possible?
Mathematics
1 answer:
Nat2105 [25]3 years ago
6 0

Answer:

24 possible codes

Step-by-step explanation:

If every letter may be used only once, we can calculated how many codes are possible using the rule of multiplication as:

__4____ * ___3____ *  ____2____ * ___1______ = 24

1st letter     2nd letter      3rd letter       4th letter

Because for the 1st letter of the code, we have 4 options, letter A, B, C and D.

Then for the 2nd letter, we only have 3 options because we can not choose the letter that we choose in the 1st letter.

So, the 3rd letter just have 2 options and finally, there is just one option for the 4th letter.

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Is 6 2/3 greater or less than 6 12/15
cricket20 [7]

we need to get a common denominator

2/3    2/3 * 5/5 = 10/15

6 2/3 = 6 10/15 < 6 12/15


so 6 2/3 < 6 12 /15

7 0
3 years ago
Help please!!!!!!!!!!
adell [148]

Answer:

1/2?

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
If 2 inches on a map represents 100 miles, how much does 3.5 inches
Sidana [21]

Answer:

175 miles

Step-by-step explanation:

3.5 has 2 miles in it so it has 100 then it has another 1 to make It 3 and half of 2 is ahh it's hard to explain but there's the anwser

4 0
3 years ago
Help me please
Stolb23 [73]

Answer:

Step-by-step explanation:

The ratio of the circumference to its diameter.

the proportion can be written this way

Circumference / diameter = pi / 1

4 0
2 years ago
Deepak wrote out the steps to his solution of the equation startfraction 5 over 2 minus 3 x minus 5 plus 4 x equals negative sta
andre [41]

The solution is x=3/4

How can we solve given equation?

First, we will solve like terms. Then shift constant to other side and keep x on the same side to get the value of x.

We can solve given equation as shown below:

5/2-3x-5+4x=-7/4

(5-10)/2+x=-7/4

-5/2+x=-7/4

x=5/2-7/4

x= (10-7)/4

x=3/4

Hence, the solution is x=3/4.

Learn more about Linear equations here:

brainly.com/question/43297

#SPJ4

4 0
1 year ago
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