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2 years ago

Two students used different methods to measure the length of their model bridge

Mathematics

1 answer:

Oduvanchick [21]2 years ago

3 0

Answer:

Two students used different methods to measure the length of their model bridge

project. One student measured the bridge length in feet using 11n−2.9. The second

student measured the bridge length in feet using 5n + 6.4 What is the value of n if

the two measurements are equal?

Step-by-step explanation:

Two students used different methods to measure the length of their model bridge

project. One student measured the bridge length in feet using 11n−2.9. The second

student measured the bridge length in feet using 5n + 6.4 What is the value of n if

the two measurements are equal?

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2 years ago

A manufacturer knows that 14% of the products it produces are defective. Find the probability that among 7 randomly selected pro

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Step-by-step explanation:

According to the Binomial distribution , the provability of getting x successes in n trials is given by :-

$P(x)=^nC_xp^x(1-p)^{n-x}$ , where p=probability of getting success in each trial.

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Then, the probability that among 7 randomly selected products, at least one of them is defective= P(X ≥ 1) =1- P(X<1)

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$=1-^7C_0(0.14)^0(1-0.14)^7$

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