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4 years ago

Which statement is true about angles 1 and 2?

Mathematics

2 answers:

Paul [167]4 years ago

7 0

Answer:

Its A

Step-by-step explanation:

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Yuliya22 [10]4 years ago

6 0

Answer:

Step-by-step explanation:

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How many 2-digit numbers are multiples of 5 but not 4?

Luden [163]

10 , 15 , 25 , 30, 35, 45 , 50 , 55, 65, 70, 75, 85, 90, 95.

Answer is 14.

4 0

4 years ago

Which situation is best modeled by the equation<br> 7 – x = 3?<br><br><br><br> 

lbvjy [14]

Answer:

x=-4

Step-by-step explanation:

7-x=3

x=3-7

x=-4

4 0

4 years ago

Read 2 more answers

Helpppppppppppppppppppppppppp

Rashid [163]

Answer:

N+4=O Where n is the input n o is the output.

Step-by-step explanation:

7 0

3 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

3 years ago

Which statement about the function is true

algol [13]

Answer:

<h2>THe only true statement is number 3</h2>

Step-by-step explanation:

because the graph of f is under the x-axis for all real values of x

where -6<x<-2.

5 0

3 years ago