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TEA [102]
3 years ago
15

What is the value of x PLEASE HELP

Mathematics
1 answer:
Sindrei [870]3 years ago
5 0

Answer: X= 30

Step-by-step explanation: So I must admit that is a really weird place to put that line, but if this is a complementary angle and the first angle is 30 degrees, then the other angle should be 60 degrees. 60/2 is 30, so therefore x=30

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The doubling time of a population of flies is 4 hours. By what factor does the population increase in 24 hours
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The doubling time of a population of flies is 4 hours. By what factor does the population increase in 24 hours

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During a sale price, a dress is marked is mark down from a selling price of $68 to a sale price of $44.20 what Is the percent ma
vesna_86 [32]

Answer: It was marked down by 35%

Step-by-step explanation:

1. find the difference of the two prices, 68-44.20=23.8

Take the fraction 23.8/68 (because that is how much the price changed and you need to find what percent that is.

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3 0
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
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
3 years ago
Answer plz?!?! and explanation plz?!?
jenyasd209 [6]

Answer:

d

Step-by-step explanation:

Radius = 4

area:

4x4x3.14x12=602.88

8 0
3 years ago
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