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Natalija [7]
2 years ago
8

An alarm system requires a 7-digit code using the digits 0 through 9. Each digit may only be used once in the code. How many dif

ferent codes are possible
Mathematics
1 answer:
maks197457 [2]2 years ago
8 0

<u>10M </u><u>different </u><u>codes </u><u>are possible.</u>

Probability Definition in Math-

  • Probability is a measure of the likelihood of an event to occur. Many events cannot be predicted with total certainty. We can predict only the chance of an event to occur i.e. how likely they are to happen, using it.
  • Four perspectives on probability are commonly used: Classical, Empirical, Subjective, and Axiomatic.
  • For example, the probability of flipping a coin and it being heads is ½, because there is 1 way of getting a head and the total number of possible outcomes is 2 (a head or tail). We write P(heads) = ½ .

  • It’s simple. there are 7 digits, so that would mean you start with 0,000,000 and end with 9,999,999.
  • If the highest digit is 9,999,999 and you add a 1 more to it, you have a total of 10M combinations.

Learn more about probability

brainly.com/question/11234923

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I need help with this problem
alexandr402 [8]

Answer:

4*x^4*y^22

Step-by-step explanation:

Your goal here is to REDUCE the given expression to simplest terms.

One way in which to approach this problem would be to rewrite (2x^2y^10)^3 as:  (2x^2*y^8)*y^2*(2x^2*y^10)^2.

Dividing this rewritten expression by 2x^2*y^8 results in:

y^2(2x^2*y^10)^2.

We now need to raise (2x^2*y^10) to the power 2.  Doing this, we get:

4x^4*y^20.

Multiply this by y^2 (see above):

y^2*4x^4*y^20

The first factor is 4:  4y^2*x^4*y^20.  This is followed by the product of y^2 and y^20:                   4*y^22*x^4

Finally, this should be re-written as

                                    4*x^4*y^22

Another way of doing this problem would involve expanding the numerator fully and then cancelling out like factors:

8*x^6*y^30      4*x^4*y^22

----------------- = ------------------ = 4*x^4*y^22

  2x^2y^8                  1

7 0
3 years ago
Which expression is equivalent to (5x – 3)(x – 3)?
miv72 [106K]

Answer:

D

Step-by-step explanation:

I'm big brain. hbvuivyvjbbu

3 0
3 years ago
the price of the a tablet was increased from $180 to $207. by what percentage was the price of the tablet increased?
mixas84 [53]
207-180=27
27/180= .15
It was increased by 15%.
3 0
3 years ago
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Patrick pays $10 per month for recycling. He expects the cost to increase 90¢ every 3 years. What is the slope that represents h
Leokris [45]
If the cost increases $0.90 every three years , then the cost increases $0.30 per year. the slope will be 0.3/1 or just 0.3
3 0
3 years ago
Point (a, b) is transformed by the rule ​(a, b−4)​ .
Tanzania [10]

I really think the answer is C


7 0
3 years ago
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