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3 years ago

Which of the following techniques can be used to separate a homogeneous mixture into its component parts?

Mathematics

2 answers:

bonufazy [111]3 years ago

5 0

Answer:

The answer is

A. Apply pressure

Step-by-step explanation:

Just got it right on my test

Airida [17]3 years ago

4 0

The answer is A. This is because heat, pressure, or differences in density are some methods used to separate homogeneous mixtures.

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A past survey of students taking a standardized test revealed that % of the students were planning on studying engineering in c

Angelina_Jolie [31]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The 95% confidence interval is $-0.00870$

Step-by-step explanation:

From the question we are told that

The first sample size is $n_1 = 1068000$

The first proportion $\r p_1 = 0.084$

The second sample size is $n_2 = 1476000$

The second proportion is $\r p_2 = 0.092$

Given that the confidence level is 95% then the level of significance is mathematically represented as

$\alpha = (100 - 95)\%$

$\alpha = 0.05$

From the normal distribution table we obtain the critical value of $\frac{ \alpha }{2}$ the value is

$Z_{\frac{\alpha }{2} } =z_c= 1.96$

Now using the formula from the question to construct the 95% confidence interval we have

$(\r p_1 - \r p_2 )- z_c \sqrt{ \frac{\r p_1 \r q_1 }{n_1} + \frac{\r p_2 \r q_2 }{n_2} }$

Here $\r q_1 = 1 - \r p_1$

=> $\r q_1 = 1 - 0.084$

=> $\r q = 0.916$

and

$\r q_2 = 1 - \r p_2$

=> $\r q_2 = 1 - 0.092$

=> $\r q_2 = 0.908$

$(0.084 - 0.092 )- (1.96)* \sqrt{ \frac{0.092* 0.916 }{1068000} + \frac{0.084* 0.908 }{1476000} }$

$-0.00870$

3 0

2 years ago

Someone please help me.

kvasek [131]

Felipe's age is ≥ 5

Step-by-step explanation:

Difference of F's age and 4: f - 4

Twice: 2 (f -4) ≥ 2

2f - 8 ≥ 2

2f ≥ 10

f ≥ 5

Answer:

Step-by-step explanation:

6 0

3 years ago

Johnson Middle School has 400

Elenna [48]

Answer:

the answer is B. 150

6 0

2 years ago

Jennifer used 0.42 gallons of paint to completely cover a square wall with an area of 168 square feet. Which measurement is clos

Marina86 [1]

Answer:

The answer to this question is: 12.96 ft ≈ 13 ft

Step-by-step explanation:

Data

Area 168 ft²

Length = ?

Volumen = 0.42 gallons

But we do not need the volume of paint because we know that the wall is squared-shape.

Only we need to know the formula to obtain the area of an square.

Formula area = length²

So 168 = length²

Finally √168 = length

length = 12.96 ≈ 13 ft

6 0

3 years ago

Factor -2.9 out of 8.7b – 11.6.

Mama L [17]

Step-by-step explanation:

Since 8.7b = (-2.9) * (-3b),

and -11.6 = (-2.9) * (4),

8.7b - 11.6 = -2.9(4 - 3b).

6 0

2 years ago