2 years ago

Jessie bought f bags of potting soil for $2.00 each. Write an expression to show how much Jessie paid.

Mathematics

1 answer:

pav-90 [236]2 years ago

8 0

I believe it is x = 2f

Happy studying

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Use the normal approximation to the binomial distribution to answer this question. Fifteen percent of all students at a large un

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Answer: 0.1289

Step-by-step explanation:

Given : The proportion of all students at a large university are absent on Mondays. : $p=0.15$

Sample size : $n=12$

Mean : $\mu=np=12\times0.15=1.8$

Standard deviation = $\sigma=\sqrt{np(1-p)}$

$\Rightarrow\ \sigma=\sqrt{12(0.15)(1-0.15)}=1.23693168769\approx1.2369$

Let x be a binomial variable.

Using the standard normal distribution table ,

$P(x=4)=P(x\leq4)-P(x\leq3)$ (1)

Z score fro normal distribution:-

$z=\dfrac{x-\mu}{\sigma}$

For x=4

$z=\dfrac{4-1.8}{1.2369}\approx1.78$

For x=3

$z=\dfrac{3-1.8}{1.2369}\approx0.97$

Then , from (1)

$P(x=4)=P(z\leq1.78)-P(z\leq0.97)\\\\=0.962462-0.8339768\approx0.1289$

Hence, the probability that four students are absent = $0.1289$

3 0

2 years ago

Devon wants to write an equation for a line that passes through 2 of the data points he has collected. The points are (8, 5) and

nevsk [136]

Step-by-step explanation:

Points are (8,5) and (-12,-9)

The equation of a line passing through two points is given by :

$y-y_1=m(x-x_1)\ \text{m is slope}\\\\y-5=\dfrac{y_2-y_1}{x_2-x_1}(x-8)\\\\y-5=\dfrac{-9-5}{-12-8}\times (x-8)\\\\y-5=\dfrac{7}{10}\times (x-8)\\\\10y-50=7x-56$

$-50+56=7x-10y\\\\7x-10y=6$

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2 years ago

The term "elevation" is often used to describe the height of a place (such as a city, a mountain, or a valley) compared to sea l

Alecsey [184]

Answer:

obviously they will produce same output because the elevation of object and image will be same

7 0

2 years ago

Please help me with these questions and show how u got them, i will mark you brainliest !

Aneli [31]

A+7
4+7
4+7=11

b-3
5-3
5-3=2

9c
9(10)
9(10)=90

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2 years ago

Sam kept track of the number of problems he was assigned for his math homework on the box plot. A number line goes from 0 to 28.

Vanyuwa [196]

Answer:

I think its A

The data is symmetric and shows that half of the assignments contained 15 problems or fewer.

Step-by-step explanation:

6 0

2 years ago

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