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2 years ago

I got a question....... LOOK AT ATTACHMENT RIGHT ANSWERS ONLYYYY!!!

Mathematics

2 answers:

enyata [817]2 years ago

6 0

Aw thanks ily too ʕ•ᴥ•ʔ

Stella [2.4K]2 years ago

6 0

Answer:

Lets talk. You really fooled me

Step-by-step explanation:

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CAN SOMEONE PLEASE HELP ME ANSWER THIS

omeli [17]

Answer:

Step-by-step explanation:

You have five exterior choices, then you multiply that by the six interior choices, then multiply the two model choices.

6 0

2 years ago

What is located at the reflection of (-3,-4) across the y-axis. What are the coordinates of this location

zlopas [31]

Answer:

(3, - 4)

Step-by-step explanation:

Under a reflection in the y- axis

a point (x, y ) → (- x, y ), hence

(- 3, 4 ) → (3, - 4 )

6 0

2 years ago

A test has 20 true/false questions. What is the probability that a student passes the test if they guess the answers? Passing me

Minchanka [31]

Using the binomial distribution, it is found that:

The probability that the student will get 15 correct questions in this test by guessing is 0.0207 = 2.07%.

For each question, there are only two possible outcomes, either the guess is correct, or it is not. The guess on a question is independent of any other question, hence, the binomial distribution is used to solve this question.

Binomial probability distribution

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

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

The parameters are:

x is the number of successes.

n is the number of trials.

p is the probability of a success on a single trial.

In this problem:

There are 20 questions, hence $n = 20$ .

Each question has 2 options, one of which is correct, hence $p = \frac{1}{2} = 0.5$

The probability is:

$P(X \geq 15) = P(X = 15) + P(X = 16) + P(X = 17) + P(X = 18) + P(X = 19) + P(X = 20)$

In which:

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

$P(X = 15) = C_{20,15}.(0.5)^{15}.(0.5)^{5} = 0.0148$

$P(X = 16) = C_{20,16}.(0.5)^{16}.(0.5)^{4} = 0.0046$

$P(X = 17) = C_{20,17}.(0.5)^{17}.(0.5)^{3} = 0.0011$

$P(X = 18) = C_{20,18}.(0.5)^{18}.(0.5)^{2} = 0.0002$

$P(X = 16) = C_{20,19}.(0.5)^{19}.(0.5)^{1} = 0$

$P(X = 17) = C_{20,20}.(0.5)^{20}.(0.5)^{0} = 0$

Then:

$P(X \geq 15) = P(X = 15) + P(X = 16) + P(X = 17) + P(X = 18) + P(X = 19) + P(X = 20) = 0.0148 + 0.0046 + 0.0011 + 0.0002 + 0 + 0 = 0.0207$

The probability that the student will get 15 correct questions in this test by guessing is 0.0207 = 2.07%.

You can learn more about the binomial distribution at brainly.com/question/24863377

6 0

2 years ago

12. To create an open-top box out of a sheet of cardboard that is 6 inches long and

dimulka [17.4K]

Answer:idk

Step-by-step explanation:

Use photomath

5 0

3 years ago

does anyone know how to help me with the letters in math, i dont understand it, and i need help, someone please? if you can can

galina1969 [7]

Answer:

Step-by-step explanation:

Letters are variables and those variable can store a number

Ex: x=5 y=2

evaluate : 3x+2y

we know that x is 5, so we know that 3x would be 15

we know that y is 2, so we know that 2x would be 4

then it says to add 3x and 2y, we would add 15 and 4 to get 19

(This is a very simple example, when you get older, the expression would be much more confusing.

3 0

2 years ago

Read 2 more answers