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Ksivusya [100]
2 years ago
7

HELP!!!!!!!! ALL MY GRADES DEPEND ON THIS!!! 0.5y/4/9 = y+3/8

Mathematics
2 answers:
zheka24 [161]2 years ago
7 0

Answer:

The answer is y=3, my friend. I hope your grade gets better <3

Step-by-step explanation:

Hoochie [10]2 years ago
3 0

Answer:

The value of y is 3

Step-by-step explanation:

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Approximately 5% of calculators coming out of the production lines have a defect. Fifty calculators are randomly selected from t
baherus [9]

Answer:

0.2611 = 26.11% probability that exactly 2 calculators are defective.

Step-by-step explanation:

For each calculator, there are only two possible outcomes. Either it is defective, or it is not. The probability of a calculator being defective is independent of any other calculator, which 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.

5% of calculators coming out of the production lines have a defect.

This means that p = 0.05

Fifty calculators are randomly selected from the production line and tested for defects.

This means that n = 50

What is the probability that exactly 2 calculators are defective?

This is P(X = 2). So

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

P(X = 2) = C_{50,2}.(0.05)^{2}.(0.95)^{48} = 0.2611

0.2611 = 26.11% probability that exactly 2 calculators are defective.

3 0
2 years ago
What is 30,000 expressed in scientific notation?
OlgaM077 [116]

The answer is b. It is the only choice that equals the right answer. You could also write this as 3 * 10^4, which is equivalent to b.

6 0
3 years ago
Read 2 more answers
Does 2 1/4-6/7=1 3/4
dimulka [17.4K]

Answer: No, it would be 2/5.


Step-by-step explanation: 2 1/4 - 6/7 is equal to about 1.4 when rounded to the nearest tenth. 1.4 as a fraction would be 4/10. 4/10 is simplified to 2/5 by dividing each number by 2.


7 0
3 years ago
Resuelve los siguientes sistemas de ecuaciones lineales utilizando el método de igualación
Dafna11 [192]

Answer:

A

Step-by-step explanation:

7 0
2 years ago
Tamika has a spinner with 5 equal sections- red, blue, yellow, and purple. she plans to pin it 150 times predict how many times
Alexxandr [17]

Number times landing on green) = 150 * 1/5 = 30

Number times landing on yellow = 150 * 1/5 = 30

Answer 60 times

6 0
2 years ago
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