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3 years ago

What is the value of (8 – 3)!? A. 336 B. 40,314 C. 5 D. 120

Mathematics

2 answers:

vredina [299]3 years ago

8 0

C. 8-3=5 you do what is inside the parentheses first

Tom [10]3 years ago

5 0

Anything that is inside the perenthasis are just like a regular math problem, so your answer should be:
C. 5

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The secretary in Exercises 2.121 and 3.16 was given n computer passwords and tries the passwords at random. Exactly one of the p

Vlada [557]

Answer:

There is a $\frac{(n-1)^{5}}{n^{6}}$ probability that the correct password is found on the sixth try.

Step-by-step explanation:

We have n passwords, only 1 is correct.

So,

Since a password is put back with other, at each try, we have that:

The probability that a password is correct is $\frac{1}{n}$

The probability that a password is incorrect is $\frac{n-1}{n}$ .

There are 6 tries.

We want the first five to be wrong. So each one of the first five tries has a probability of $\frac{n-1}{n}$ . So, for the first five tries, the probability of getting the desired outcome is $\frac{(n-1)^{5}}{n^{5}}$ .

We want to get it right at the sixth try. The probability of sixth try being correct is $\frac{1}{n}$ .

So, the probability that the first five tries are wrong AND the sixth is correct is:

$P = \frac{(n-1)^{5}}{n^{5}}\frac{1}{n} = \frac{(n-1)^{5}}{n^{6}}$

There is a $\frac{(n-1)^{5}}{n^{6}}$ probability that the correct password is found on the sixth try.

5 0

2 years ago

Check the apply π\6 is the reference angle for

belka [17]

$\pi = 180\\
 \frac{\pi}{6} = x\\ \pi x = \frac{180\pi}{6}\\ \pi x = 30 \pi \\ x = 30$

5 0

3 years ago

Read 2 more answers

Simplify 12x + 8x - 3x

Pie

when two numbers have the same variable, we can add and subtract just like normal numbers.

12x + 8x = 20x - 3x = 17x

8 0

2 years ago

Read 2 more answers

What is the value of x in the figure shown below?

Hunter-Best [27]

Answer:

Step-by-step explanation:

for missing angle of triangle ABC

let the missing angle be y

31+111+x=180(sum of interior angle of a triangle is 180 degree)

142+y=180

y=180-142

y=38 degree

x=y(being alternate angles)

x=38 degree

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2 years ago

Which is a valid proportion A.) 3/4=21/28 B.) 5/6=29/30 C.) 4/7=16/49 D.) 2/5=12/15

Neporo4naja [7]

The correct answer would be A) 3/4=21/28

Explanation: 3 x 7=21; 4 x 7=28. None of the other answer choices demonstrate a proportion. Hope this helps:)

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2 years ago

Read 2 more answers