3 years ago

Seventh grade

Mathematics

1 answer:

victus00 [196]3 years ago

7 0

Answer:

Maybe it could be six or 30

Step-by-step explanation:

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Simplify the expression

Bingel [31]

2x 2y...... ............

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3 years ago

Assume that a procedure yields a binomial distribution with a trial repeated n times. Use the binomial probability formula to fi

Keith_Richards [23]

Answer:

P(X = 12) = 0.0064.

Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

In this problem we have that:

$n = 30, p = 0.2$

We want P(X = 12). So

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 12) = C_{30,12}.(0.2)^{12}.(0.8)^{18} = 0.0064$

P(X = 12) = 0.0064.

6 0

3 years ago

Item 4

kogti [31]

Answer:

he is an ordinary man because that is what the speaker is talking about

5 0

3 years ago

Read 2 more answers

A regular polygon has 13 sides.Find was he sum of the exterior angle.

maks197457 [2]

Answer:

Step-by-step explanation:

Exterior angle = 360/n

= 360/13

= 27.7°

3 0

3 years ago

The lengths of the sides of a triangle are in a the extended ratio of 3:6:8. The triangles perimeter is 510cm. What are the leng

lisov135 [29]

I think
(Total)
3 : 6 : 8 = 17
(Times by 30 to get total then you times by each ratio/side)

90 : 180 : 240= 510cm

6 0

3 years ago