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3 years ago

Solve the following equation:

Mathematics

2 answers:

kirza4 [7]3 years ago

8 0

Answer:

The answer is A

Step-by-step explanation:

4(x-3=)=48-8x

4(5-3)=48-8*5

20-12=8 48-40=8

8=8

Hope this answers your question

ASHA 777 [7]3 years ago

4 0

Answer: x =5 4x-12=48-8x add 12 to both sides 4x-12+12=48-8x+12 Simplify 4x=-8x+60 add 8× to both sides 4x+8x=-8x+60+8x Simplify 12x=60 Divide both sides by 12 f{12x}{12}={60}{12} x=5

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Answer: B. 12 girls

Step-by-step explanation:

Since the ratio is 4:3 we can multiply both sides by 4 to get 16 boys and the equivalent number of girls for this problem, 16:12

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In order to sole the problem you need to create an equation to model what you are trying to do.
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4 years ago

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A sequence of Bernoulli trials consists of choosing components at random from a batch of components. A selected component is eit

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Answer:

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b) 0.0336 = 3.36% probability that 8 non-defective components are drawn before the first defective component is chosen.

Step-by-step explanation:

A sequence of Bernoulli trials composes the binomial distribution.

Binomial probability distribution

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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.

The probability that a selected component is non-defective is 0.8

This means that $p = 0.8$

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This is P(X = 3) when n = 7. So

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

$P(X = 3) = C_{7,3}.(0.8)^{3}.(0.2)^{4} = 0.0287$

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Now the order is important, so the we just multiply the probabilities.

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