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3 years ago

12

Sally will measure the length of a wall in both centimeters and meters. Will there be fewer centimeters or fewer meters? Explain

.

2 answers:

MakcuM [25]3 years ago

7 0

Fewer centimeters because there will be fewer centimeters

harkovskaia [24]3 years ago

6 0

There would be fewer meter. Since 1 m=100 cm.

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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

3 years ago

Read 2 more answers

Help me please this is my last question

almond37 [142]

Already answered the other question which was the same
8= 2 liters of punch
16= 4 liters of punch
20= 5 liters of punch
28= 7 liters of punch

7 0

3 years ago

Write the solution of the given system of equations

Citrus2011 [14]

Answer:

Step-by-step explanation:

The solution to this system of equation is (4, 10)

3 0

2 years ago

Pls help whoever gives me the most correct answer I'll mark brainliest

Greeley [361]

Answer:

c= 1.16n

Step-by-step explanation:

j

6 0

3 years ago

Alina [70]

Answer:

30 dollars

Step-by-step explanation:

packages-$12.36 x 2=24.72

broccoli-$1.98/2=.99

milk-$3.49

$24.72+.99=25.71

$25.71+$3.49=29.20

$29.20+.80=30.00

she payed with $30.00

6 0

3 years ago