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Nina [5.8K]
3 years ago
10

In how many ways can a password be made using four letters from the 26 letter English alphabet letters can’t be repeated

Mathematics
1 answer:
valentinak56 [21]3 years ago
7 0

Answer:

If you go by normal method, no. of possible passwords that can be created with 26 alphabets are 26X26X26X26 = 456,976

Step-by-step explanation:

. If you do not want to repeat the alphabets, you can use combinations. i.e. C(26, 4) or 26C4 = 358,800 ways

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I'm a little confused so I have no need for an explanation just answer honestly
Kipish [7]
Y=105 and X=25
Hope this helps
6 0
3 years ago
PLEASE HELP AND EXPLAIN STEP BY STEP.​
SIZIF [17.4K]

A. The two listed added up will be 180 degrees.

5x - 57 + 3x + 5 = 180

8x - 52 = 180

8x - 52 + 52 = 180 + 52

8x = 232

x = 29

B. The two listed added up will be 180 degrees.

2x + 4x + 150 = 180

6x + 150 = 180

6x + 150 - 150 = 180 - 150

6x = 30

x= 5

Can I get brainlyist

8 0
3 years ago
In order to apply the law of cosines to find the length of the side of a triangle, is it enough to know which of the following?
leva [86]

9514 1404 393

Answer:

  B. The lengths of two of the triangle's sides and the measure of the angle between them

Step-by-step explanation:

The usual formulation of the law of cosines is something like this:

  c² = a² +b² -2ab·cos(C)

where 'c' is the side opposite angle C, and 'a' and 'b' are the other two sides. That is, to use this formula directly, one needs two side lengths and the measure of the included angle.

_____

<em>Additional comment</em>

One can use the law of cosines to solve a triangle when any two sides and one angle are known. The use of the formula will give a quadratic in the unknown side length, if it is not the side opposite the known angle. As with the law of sines, if the angle is opposite the shorter of the two given sides, there may be two solutions for the length of the third side.

3 0
3 years ago
Thomas Malthus, a political economist, showed that the human population would outstrip available resources unless kept in check
vredina [299]

Answer:

C. Darwin realized this also applied to plant and animal populations, and this struggle for existence resulted in an opportunity for natural selection to act on differences within populations.

Step-by-step explanation:

Thomas Malthus in his Malthusian theory of population concluded that since population increases geometrically and  resources only increase arithmetically, there will reach a point in time when the resources will be not be able to sufficiently cater for the population.

The Charles Darwin theory of Evolution is based on five key observations and conclusions drawn from them. These observations and inferences are summarized as:

  • Species are more fertile. They birth more offspring than can grow to adulthood.
  • Populations remain fairly stable with miniscule fluctuations.
  • Food resources are limited, but are relatively constant most of the time.

<em>Based off these observations, it is seen that there will be a </em><u><em>struggle</em></u><em> amongst the members of the specie for the </em><u><em>limited resources.</em></u>

  • In sexually reproducing species, generally no two individuals are identical. Variation is rampant.
  • Much of this variation is heritable.

<em>From the last two observations, the species that survive then pass on their traits to their offspring and the cycle repeats itself with each subsequent generation being </em><u><em>better evolved</em></u><em> than the previous ones.</em>

Thus, Darwin discovered that the Malthusian theory of population also applies to plant and animal populations where <u>scarcity of resources</u> gives room for <u>natural selection</u> to take place due to the variation within populations.

4 0
4 years ago
Is Y=2 to the 2nd power linear or non linear why?
Ipatiy [6.2K]

Answer:

Linear

Step-by-step explanation:

y = 2^2

y = 4

This is a line.  4 is constant.  

Y to a constant value is a horizontal line

8 0
3 years ago
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