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Nutka1998 [239]

4 years ago

13

Help with x plzzzzz

1 answer:

FrozenT [24]4 years ago

5 0

Answer:

Wouldn't x be 33 because all you need left is 66 degrees, 66 divided by 2 is 33. So 33 would be my final answer.

Step-by-step explanation:

You might be interested in

A conjecture and the flowchart proof used to prove the conjecture are shown.

posledela

Answer:

1. Definition of parallelogram

Step-by-step explanation:

1. Definition of parallelogram

2. Angle Congruence Postulate

3. m<2 + m<3 =180

4. m<1 + m<3 =180

5. Definition of supplementary

7 0

4 years ago

A quiz consists of six multiple choice questions. Each question has four choices. A student who forgot to study guesses randomly

jeka94

Answer:

0.9945 = 99.45% probability that the student answers at most four questions correctly

Step-by-step explanation:

For each question, there are only two possible outcomes. Either the student answers correctly, or he/she does not. The probability of the student answering a question correctly is independent of any other question. This means that the binomial probability distribution is used to solve this question.

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.

A quiz consists of six multiple choice questions.

This means that $n = 6$

Each question has four choices. Student guesses randomly.

This means that $p = \frac{1}{4}$

What is the probability that the student answers at most four questions correctly?

This is:

$P(X \leq 4) = 1 - P(X > 4)$

In which

$P(X > 4) = P(X = 5) + P(X = 6)$ . So

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

$P(X = 5) = C_{6,5}.(0.25)^{5}.(0.75)^{1} = 0.0053$

$P(X = 6) = C_{6,6}.(0.25)^{6}.(0.75)^{0} = 0.0002$

$P(X > 4) = P(X = 5) + P(X = 6) = 0.0053 + 0.0002 = 0.0055$

$P(X \leq 4) = 1 - P(X > 4) = 1 - 0.0055 = 0.9945$

0.9945 = 99.45% probability that the student answers at most four questions correctly

6 0

3 years ago

Round 45.38 to the nearest whole<br>number. A)40. B)50. thx<br>

musickatia [10]

The answer would be 50 because it’s .38 more then 45

7 0

3 years ago

Westfield Junior High is attending a field trip to the planetarium. The planetarium requires students to be placed into groups o

densk [106]

Answer:

270 students is the highest number of students that can attend the Planetarium field trip each day

Step-by-step explanation:

Here, we want to know the highest number of students that can attend the planetarium each day

from the question;

The highest number per group is 15 students

The highest number of group is 18 groups

So the highest number of attendees will be;

15 * 18 = 270 students

6 0

3 years ago

There are 45 horses that are in a field if 15 of the horses are gray what percent of the horse are not gray

levacccp [35]

3% of them not gray

4 0

3 years ago