Question 2 of 10 What is the difference of the fractions below? 3/4-3/5

Mathematics

1 answer:

Ugo [173]1 year ago

7 0

3/4 - 3/5 first we need to change it to the same denominator so it’ll be

15/20- 12/20 which equals 3/20

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What is a/b if a-b=2

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Answer:

Step-by-step explanation:

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3 years ago

Find the surface area of the cylinder. Round your answer to the nearest tenth. 6 m 7 m

faltersainse [42]

Use the formula: A=2(3.14)rh+2(3.14)r^2
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. Quantas senhas com 4 algarismos diferentes podemos escrever com os algarismos 1, 2, 3, 4, 5, 6?

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Answer:

We can write 360 distinct passwords using the numbers 1, 2, 3, 4, 5, and 6.

Step-by-step explanation:

We have to find how many passwords with 4 different digits can we write with the numbers 1, 2, 3, 4, 5, and 6.

Firstly, it must be known here that to calculate the above situation we have to use Permutation and not combination because here the order of the numbers in a password matter.

Since we are given six numbers (1, 2, 3, 4, 5, and 6) and have to make 4 different digits passwords.

Now, for first digit of the password, we have 6 possibilities (numbers from 1 to 6).

Similarly, for second digit of the password, we have 5 possibilities (because one number from 1 to 6 has been used above and it can't be repeated).

Similarly, for the third digit of the password, we have 4 possibilities (because two numbers from 1 to 6 have been used above and they can't be repeated).

Similarly, for the fourth digit of the password, we have 3 possibilities (because three numbers from 1 to 6 have been used above and they can't be repeated).

So, the number of passwords with 4 different digits we can write = $6 \times 5 \times 4 \times 3$ = 360 possibilities.