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finlep [7]
3 years ago
11

2 easy questions, 6th grade

Mathematics
2 answers:
Gnoma [55]3 years ago
3 0

Answer:

36 and 6. 2.

Step-by-step explanation:

Gala2k [10]3 years ago
3 0
I’m not sure but I think it’s 15 and 6
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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
3 years ago
Please help me with this
Brums [2.3K]

Answer:

  match the boxes to the parts of the equations shown below

Step-by-step explanation:

<h3>Left</h3>

  \text{slope}=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{50-34}{5-3}=\dfrac{16}{2}=8

__

<h3>Right</h3>

  \text{slope}=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{2-31}{30-1}=\dfrac{-29}{29}=-1

3 0
2 years ago
If two polynomial equations have real solutions, then will the equation that is the result of adding, subtracting, or multiplyin
kirill115 [55]

No. A polynomial equation in one variablel ooks like P(x) = Q(x), where P and Q are polynomials.

Consider polynomial equations x^2 = 3 and x^2 = 1.

Obviously they have real solutions.

Subtract the two polynomial equations:

(x^2 - x^2) = (3 - 1)

0 = 2...

We get the polynomial equation 0 = 2. We call this a polynomial equation because single constants are also by definition polynomials.

Obviously 0 = 2 has no real solution.

3 0
2 years ago
What is the equation of a line that passes through the points (3, 6) and (8, 4) in slope intercept form?
MrMuchimi

Answer:

y=-\frac{2}{5}x +8.4

Step-by-step explanation:

Gradient

m =\frac{y-y1}{x-x1}

m = \frac{6-4}{3-8}

m=-\frac{2}{5}

Equation of a line

(y-y1)=m(x-x1)\\

- Sub one set of points into equation

(y-6)= -\frac{2}{5} (x-6)

y=-\frac{2}{5}x +8.4  

6 0
3 years ago
Wanda has three times more shirts than her brother, Will. The equation a = 3b, where a represents the number of shirts Wanda has
marusya05 [52]

Answer:

8 shirts

Step-by-step explanation:

Given the equation a = 3b, where

a = the number of shirts  Wanda has

b = the number of shirts Wanda's brother (Will) has

Hence if Wanda has 24 shirts then

24 = 3b

Divide both sides by 3

24/3 = b

b = 8 shirts

Will has 8 shirts.

6 0
3 years ago
Read 2 more answers
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