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3 years ago

7

What's the percentage of change from 20 is decreased to 11

1 answer:

Reil [10]3 years ago

3 0

Answer:

The percentage is 45 percent.

Step-by-step explanation:

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The above picture shows a series of similar shapes. Describe and quantify what transformation(s) occurred at each step. The orig

velikii [3]

Answer:

Triangle ABC is shown with four images that are each the result of a transformation of triangle ABC. Triangle MNO is reflected over the x-axis and then translated up 4 and right 3. Translate the pre-image down 4 and right 3 and then reflect the figure over the x-axis

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3 years ago

I need help. 40x^6+16x^6

xxMikexx [17]

Answer:

56^6

Step-by-step explanation:

when they are the same exponent

you just add the coefficients

7 0

3 years ago

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How many times does 4 go into 78

Bess [88]

You would do 78/4 which equals 19.5. Hope this helps!

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3 years ago

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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

PLZZZZ HELPPPPPPPPP!!!! a survey asks teachers and students whether they would like the new school mascot to be a Viking or a Pa

VARVARA [1.3K]

Answer:

B

Step-by-step explanation:

Two events A and B are called independent, when

$P(B|A)=P(B),$

where $P(B|A)$ is the probability that B occurs given that A has already occurred.

A = randomly selected person is a student

B = randomly selected person prefer "Vikings"

B|A = randomly selected student prefer "Vikings"

Probabilities:

$P(A)=\dfrac{100}{125}=\dfrac{4}{5}=0.8\\ \\P(B|A)=\dfrac{80}{85}=\dfrac{16}{17}\approx 0.94$

Since

$0.80\neq 0.94$

we can state that events are not independent.

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3 years ago

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