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3 years ago

What’s the correct answer

Mathematics

2 answers:

alexandr402 [8]3 years ago

7 0

The answer is 20 min

victus00 [196]3 years ago

6 0

20 mins: it says the answer in the graph

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Find the inverse of 3y = 3x - 6. Write your answer in y = form with no spaces to increase the chance of auto grade working.

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Hope the shown work helps!

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3 years ago

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If someone covers 4 laps in 12 minutes what was the speed?

Alisiya [41]

If someone covers 4 laps in 12 minutes, he would be able to cover 1 lap in 3 minutes if that was the question. The question isn’t really clear.

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3 years ago

Question 5Multiple Choice Worth 1 points)

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It would be y=x+3 because you have a slope of 1 and a y-intercept at 3

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3 years ago

Nine more than the product of 22 and Gordons height

OverLord2011 [107]

Answer:

9 + 22h

Explanation:

The question is incomplete as Gordon's height is not given. To solve further, we will represent this height with h

So, we have:

nine more than the $product$ of 22 and $Gordons\ height$

More than, in this case means plus (+)

nine + the $product$ of 22 and $Gordons\ height$

Rewrite nine as 9 and substitute h for Gordons height

9 + the $product$ of 22 and h

product, in this case means multiplication (*)

9 + 22 * h

So, the expression is:

9 + 22h

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2 years ago

Based on a poll, 60% of Internet users are more careful about personal information when using a public Wi-Fi hotspot. What is

skad [1K]

Answer:

The probability that at least one of them is careful about personal information is 0.9744.

If the survey subjects volunteered to respond, then this a voluntary sampling and the estimated probability p may be biased, as only the people interested in the topic participate.

Given the subject of the survey, it is estimated that the ones who answered the survey are more careful about personal information and then the propability p is biased to a higher level than it should be if the sample was random.

Step-by-step explanation:

We can model this with a random variable, with sample size n=4 and probability of success p=0.6.

The probability that k individuals are more careful about personal information when using a public Wi-Fi hotspot in the sample is:

$P(x=k)=\dbinom{n}{k}p^k(1-p)^{n-k}=\dbinom{4}{k}\cdot0.6^k\cdot0.4^{4-k}$

We have to calculate the probability that 1 or more are more careful about personal information when using a public Wi-Fi hotspot. This can be calculated as:

$P(x\geq1)=1-P(x=0)\\\\\\P(x=0)=\dbinom{4}{0}\cdot0.6^{0}\cdot0.4^{4}=1\cdot1\cdot0.0256=0.0256\\\\\\P(x\geq1)=1-0.0256=0.9744$

The probability that 1 or more individuals in the sample are more careful about personal information when using a public Wi-Fi hotspot is 0.9744.

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4 years ago