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murzikaleks [220]
2 years ago
12

ASAP WHO EVER ANSWER THIS QUESTION WILL BE MARKED BRANLIEST URGENT

Mathematics
1 answer:
Yuliya22 [10]2 years ago
6 0

Answer:

i think its A. . .

Step-by-step explanation:

You might be interested in
Write the number in two other forms 8.517
tamaranim1 [39]
Expanded: 8.000 + .500 + .010 + .007

Word Form: eight ones, five tenths, one hundredth, seven thousandths

Hope this helps!


3 0
3 years ago
A boiler has five identical relief valves. The probability that any particular valve will open on demand is 0.93. Assume indepen
noname [10]

Answer:

There is a 99.99998% probability that at least one valve opens.

Step-by-step explanation:

For each valve there are only two possible outcomes. Either it opens on demand, or it does not. This means that we use the binomial probability distribution to solve this problem.

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 combinatios 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 = 5, p = 0.93

Calculate P(at least one valve opens).

This is P(X \geq 1)

Either no valves open, or at least one does. The sum of the probabilities of these events is decimal 1. So:

P(X = 0) + P(X \geq 1) = 1

P(X \geq 1) = 1 - P(X = 0)

So

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

P(X = 0) = C_{5,0}.(0.93)^{0}.(0.07)^{5} = 0.0000016807

Finally

P(X \geq 1) = 1 - P(X = 0) = 1 - 0.0000016807 = 0.9999983193

There is a 99.99998% probability that at least one valve opens.

5 0
2 years ago
Read 2 more answers
Why is it helpful to draw a picture when attempting to solve an equation?
miss Akunina [59]
It’s bevause you can see what you are doing instead of doing it all of your head which could get messed up.
7 0
3 years ago
Read 2 more answers
How do I solve equations like this?
amid [387]
Can u state the problem it is very blurry thx
7 0
3 years ago
In a dance competition, a participant has to score a total of at least 30 points in the first four rounds combined to move on to
brilliants [131]
If he got 5 points in the first round and he needed at least thirty he would score 9 points in the next three rounds
8 0
3 years ago
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