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3 years ago

What is the possible arrangement for 22 students

1 answer:

8 0

$\bf \stackrel{Permutations}{_nP_r=\cfrac{n!}{(n-r)!}}~\hspace{6em}\stackrel{\textit{22 units arranged in groups of 22}}{_{22}P_{22}=\cfrac{22!}{(22-22)!}} \implies _{22}P_{22}=\cfrac{22!}{0!} \\\\\\ _{22}P_{22}=\cfrac{22!}{1}\implies _{22}P_{22}=22!\implies _{22}P_{22}=1124000727777607680000$

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4 0

3 years ago

Read 2 more answers

Which is 2logx-6log(x-9) written as a single logarithm

Elena-2011 [213]

Answer: option c.

Step-by-step explanation:

To solve the given exercise and write the expression as a single logarithm, you must keep on mind the following properties:

$m*log(a)=log(a)^m$

$log(a)-log(b)=log(\frac{a}{b})$

Therefore, by applying the properties shown above, you can rewrite the expression given, as following:

$2logx-6log(x-9)=logx^2-log(x-9)^6=log(\frac{x^2}{(x-9)^6})$

Then as you can see, the answer is the option c.

3 0

3 years ago

Help please, I’m not sure

inysia [295]

YOUR ANSWER IS A
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8 0

3 years ago

Can you guys help me please

Nat2105 [25]

Answer:

a = 42

Step-by-step explanation:

2a + 16 + 80 = 2a + 96

2a + 96 = 180

2a = 84

a = 42

7 0

3 years ago

Which method is the best way to solve the system shown below? 3x + 4y = 12 3x - 4y = 5

densk [106]

Answer:

$3x + 4y = 12 \\ 3x - 4y = 5 \\ 6x = 17 \\ x = \frac{17}{6} \\ 3 \times \frac{17}{5} - 4y = 5 \\ 51 \div 5 - 4y = 5 \\ \\ 10.2 - 5 = 4y \\ y = \frac{5.2}{4}$

3 0

2 years ago