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2 years ago

Which method of separation can be used for a homogeneous mixture ?

2 answers:

8 0

One method of separation of homegeneous mixtures is called distillation and its based on the various boiling points of the component of mixture.
In other words the answer is letter D

ruslelena [56]2 years ago

8 0

I think it is d because there is this another word for that

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Jane wants to estimate the proportion of students on her campus who eat cauliflower. after surveying 39 students, she finds 4 w

stellarik [79]

Let $x$ be the number of students who eat cauliflower.

Therefore, $x=4$ .

Let $n$ be the total number of students surveyed.

Therefore, $n=39$

Thus, $\hat p$ $=\frac{4}{39} =0.10256$

Now, for 90% confidence level, from the table we know that $Z=1.645$ .

The formula for the interval range of proportion of students is :

$p= \hat p\pm Z\sqrt{\frac{\hat p(1-\hat p)}{n}}$

Plugging in the values we get:

$p=0.10256\pm 1.645\sqrt{\frac{0.10256(1-0.10256)}{39}}=0.10256\pm 0.04858=0.15114, 0.05398$

Thus, Jane is 90% confident that the population proportion p, for students who eat cauliflower in her campus is between 5.398% and 15.114% (after converting the answer we got to percentage).

7 0

3 years ago

Find the percent of the number. 20% of 60

Svetradugi [14.3K]

Answer:

12 is 20% of 60

7 0

3 years ago

I need 1 more credit to pass my class! Please Help! <br> I will give brainliest If your right.

Ganezh [65]

Answer:

It’s 135

or 67.5

Step-by-step explanation:

7 0

3 years ago

Half of a number decreased by 27

bija089 [108]

"Half of a number decreased by 27" can be displayed as:

<u>1/2x - 27</u>

3 0

3 years ago

Write 19/25 as a decimal and a percent

bixtya [17]

Answer:

19/25

Decimal: 0.76

Percent: 76%

Step-by-step explanation:

5 0

3 years ago