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4 years ago

You run 1 3/4 miles each day. Your friends runs 4 times as far as you do. How far does your friends run each eah day?

1 answer:

8 0

⓵ You run 1 ¾ miles. You can decide to work with fractions, but I find it easier to work with decimals :

¾ = 3 ÷ 4 = 0,75

1 mile + 0,75 mile = 1,75 miles

⓶ Your friend runs 4 times as far as you do, wich means that he runs 1,75 miles times four :

1,75 x 4 = 7 miles

So your final answer is : Your friend runs 7 miles each day.

I hope this helped, if there’s anything just let me know! ☻

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Monica [59]

Step-by-step explanation:

This figure has 1 line of symmetry

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3 years ago

(x + 2)2 + (y - 3)2 = 4

Lostsunrise [7]

Answer: x=3

Step by Step:
(x+2)2+(y-3)2=4
2x+4+(0-3)x2=4
2x+4-3x2=4
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4 years ago

A type of long-range radio transmits data across the Atlantic Ocean. The number of errors in the transmission during any given a

Marianna [84]

Answer:

32.33% probability of having at least 3 erros in an hour.

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

In which

x is the number of sucesses

e = 2.71828 is the Euler number

$\mu$ is the mean in the given time interval.

The mean number of errors is 2 per hour.

This means that $\mu = 2$

(a) What is the probability of having at least 3 errors in an hour?

Either you have 2 or less errors in an hour, or we have at least 3 errors. The sum of the probabilities of these events is decimal 1. So

$P(X \leq 2) + P(X \geq 3) = 1$

We want $P(X \geq 3)$

$P(X \geq 3) = 1 - P(X \leq 2)$

In which

$P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2)$

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

$P(X = 0) = \frac{e^{-2}*(2)^{0}}{(0)!} = 0.1353$

$P(X = 1) = \frac{e^{-2}*(2)^{1}}{(1)!} = 0.2707$

$P(X = 2) = \frac{e^{-2}*(2)^{2}}{(2)!} = 0.2707$

$P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2) = 0.1353 + 0.2707 + 0.2707 = 0.6767$

$P(X \geq 3) = 1 - P(X \leq 2) = 1 - 0.6767 = 0.3233$

32.33% probability of having at least 3 erros in an hour.

6 0

3 years ago

You have used the significant level of 0.01 to estimate the average hours of television viewing for the NJ students. What is the

Lorico [155]

Answer:

Step-by-step explanation:

Given : You have used the significant level of 0.01 to estimate the average hours of television viewing for the NJ students.

To Find :What is the chance that our interval estimate does not contain the true population mean?

Solution:

We are given that You have used the significant level of 0.01 to estimate the average hours of television viewing for the NJ students.

So, α=0.01

Significance level indicates a risk of concluding that a difference exists when there is no actual difference.

So, The chance that our interval estimate does not contain the true population mean is 0.01

So, The chance that our interval estimate does not contain the true population mean is $0.01 \times 100 = 1\%$

Hence Option D is true

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3 years ago

How do I write 4 times the sum of a number and 8.

Pavlova-9 [17]

Answer:

This would be written as 4(x+8)

Step-by-step explanation:

We don't know the number it is referring to, so let's call that x. It also says it has to show the sum of x and 8 would be adding them and then multiplying the sum of those numbers by 4.

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3 years ago