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2 years ago

Help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

Mathematics

2 answers:

amid [387]2 years ago

3 0

Anwser is B I got it right on the test

vfiekz [6]2 years ago

3 0

The answer is B because it’s right

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jek_recluse [69]

2a + 3b, 6ab, And 2b + 3a

5 0

3 years ago

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The probability that a lab specimen contains high levels of contamination is 0.10. A group of 4 independent samples are checked.

galben [10]

Answer:

a) 0.6561

b) 0.2916

c) 0.3439

Step-by-step explanation:

We are given the following information:

Let us treat high level of contamination as our success.

p = P(High level of contamination) = P(success) = 0.10

n = 4

The, by binomial distribution:

$P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}\\\text{where x is the number of success}$

a) P(No high level of contamination)

We put x = 0, in the formula.

$P(X=0) = \binom{4}{0}.(0.10)^0.(1-0.10)^{4} =0.6561$

Probability that no lab specimen contain high level of contamination is 0.6561

b) P(Exactly one high level of contamination)

We put x = 1, in the formula.

$P(X=1) = \binom{4}{1}.(0.10)^1.(1-0.10)^{3} =0.2916$

Probability that no lab specimen contain high level of contamination is 0.6561

c) P(At least one contains high level of contamination)

$p(x \geq 1) = 1 - p( x = 0) = 1 - 0.6561 = 0.3439$

Probability that at least 1 lab specimen contain high level of contamination is 0.3439

8 0

3 years ago

Sarah has a 6 cup bag of rice. If a serving is ¾ of a cup, how many servings does Sarah have?

kondaur [170]

Answer:

There are 8 servings

Step-by-step explanation:

6÷3/4= 8

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3 years ago

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Akira divided her 55 dimes evenly into 5 piles. How many dimes did she put in each pile?

Jet001 [13]

She would've put 11 dimes in each pile. 55/5=11

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3 years ago

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What value of x makes this inequality true? <br> x + 16 < 43

lianna [129]

Answer:

x < 27

Step-by-step explanation:

x + 16 < 43

move the constant to the right-hand side and change its sign

x < 43 - 16

subtract the numbers

x < 27

~~~~~~~~~~~~~~~~~~

X < 27

alternative form

X ∈ ( - ∞ , 27 ) , { x | x < 27 }

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2 years ago