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Yuki888 [10]
3 years ago
13

Is 12/5 a rational or irrational

Mathematics
1 answer:
strojnjashka [21]3 years ago
5 0
Rational since 12/5=2.4
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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
Illusion [34]

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

[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

Step-by-step explanation:

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

X\sim N(\mu = 50, \sigma =6)

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

5 0
2 years ago
Solve the system of equations. 2y-y=5 and 3x+2y=4
rewona [7]

Answer:

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Could I please have help I’m being timed
galina1969 [7]

Answer:

x = 8

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
**I'LL MARK YA BRAINLIEST IF CORRECT!!**
inn [45]

Answer:

76

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the surface area of the prism
navik [9.2K]
There are 6 faces to the prism:
2 each of (Length x Width): 2(4 x 4) = 2(16) = 32 m²
2 each of (Length x Heighth): 2(4 x 8) = 2(32) = 64 m²
2 each of (Width x Heighth): 2(4 x 8) = 2(32) = 64 m²

The sum of the faces is the Surface Area (S.A.)
32 m² + 64 m² + 64 m² = S.A.
160 m² = S.A.
7 0
3 years ago
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