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Archy [21]
3 years ago
8

0.6x- 1.1 = 0.4x + 7.1​

Mathematics
1 answer:
Papessa [141]3 years ago
5 0

Answer: x = 41

Step-by-step explanation:

You didn't really say what you want to solve but I think you want to solve for x.

0.6x- 1.1 = 0.4x + 7.1​

From this question, we can collect like terms. This will be:

0.6x - 0.4x = 7.1 + 1.1

0.2x = 8.2

Then, we divide both side by 0.2

0.2x/0.2 = 8.2/0.2

x = 41

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2 years ago
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3 years ago
g In R simulate a sample of size 20 from a normal distribution with mean µ = 50 and standard deviation σ = 6. Hint: Use rnorm(20
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Answer:

> a<-rnorm(20,50,6)

> a

[1] 51.72213 53.09989 59.89221 32.44023 47.59386 33.59892 47.26718 55.61510 47.95505 48.19296 54.46905

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Then we can find the mean and the standard deviation with the following formulas:

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> sqrt(var(a))

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Step-by-step explanation:

For this case first we need to create the sample of size 20 for the following distribution:

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And we can use the following code: rnorm(20,50,6) and we got this output:

> a<-rnorm(20,50,6)

> a

[1] 51.72213 53.09989 59.89221 32.44023 47.59386 33.59892 47.26718 55.61510 47.95505 48.19296 54.46905

[12] 45.78072 57.30045 57.91624 50.83297 52.61790 62.07713 53.75661 49.34651 53.01501

Then we can find the mean and the standard deviation with the following formulas:

> mean(a)

[1] 50.72451

> sqrt(var(a))

[1] 7.470221

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3 years ago
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2 years ago
Jerome usually uses 8 cups of water and 3 cups of drink mix. Tomorrow, there is a road race in town, however, and Jerome thinks
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Answer:

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He uses 8 cups of water and 3 cups of drink mix, so therefore, the ratio is 8:3

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3 years ago
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