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3 years ago

Help.........................

Mathematics

2 answers:

Ber [7]3 years ago

6 0

Answer:

Step-by-step explanation:

Hiked amount = 72000 - 48000 = $24000

Percentage raise =

$=\frac{24000}{48000}*100\\\\=\frac{24}{48}*100\\\\=\frac{1}{2}*100\\$

= 50%

Pani-rosa [81]3 years ago

3 0

Answer:

50%

Step-by-step explanation:

72000-48000=24000

24000 is 50% of 48000

48000+24000=72000

It's 50%, im sorry if it's confusing

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Determine what type of statistical test should be used to answer each of the questions below. (You will only use each response o

Svet_ta [14]

Answer:

1.One proportion

2. Proportions from Dependent Samples

3. Two Independent Proportions

4. One Mean

5. Means from Dependent Samples

6. Two Independent Means

Step-by-step explanation:

What proportion of Americans believe in climate change? - One proportion

From the above information, there is only one sample and the question is about proportion. So, we must use "One proportion".

Do college students change their view on climate change as they go through college? One hundred freshman are asked if they believe in climate change. The same students are asked four years later if they also believe in climate change. - Proportions from Dependent Samples

From the information given, there are two samples and samples are dependent ( that is same students are asked four years later). Furthermore, the question is about proportion, we must use " Proportions from dependent samples ".

Is there a difference in the proportion of men and women who believe in climate change? - Two Independent Proportions

From the information given, there are two independent samples and they are asking about proportion, we must use "Two independent proportions".

What is the average amount of time that Americans spend watching or reading the news a day? - One Mean

From the information, there is only one sample and they are asking about mean. Therefore, we must use ". One mean".

Is there a difference in the amount of time that college students spend reading or watching the news as they go through college? One hundred students were asked as freshmen and as senior how many minutes a day they spent reading or watching the news? - Means from Dependent Samples

There are two samples and samples are dependent ( the same students are asked four years later). Also, they are asking about mean, we must use "Means from dependent samples ".

Is there is a difference in the amount of time that Republicans and Democrats spend watching or reading the news? - Two Independent Means

From the information given, there are two independent samples and they are asking about mean, we must use "Two independent means".

8 0

3 years ago

Uh, no rush ill give brainliest to the best answer..

Liula [17]

Hey there! :)

Answer:

The 2nd choice.

Step-by-step explanation:

Looking at the tables, we can eliminate those that do not show an increase, then a decrease in speed.

Table 1:

The speed goes from 45, 43, 41, 42, to 43. This shows a decrease, then an increase. This choice is incorrect.

Table 2:

The speed goes from 45, 47, 49, 48 to 47. This shows an increase, then a decrease. This choice is correct.

Table 3:

The speed goes from 45, 45, 45, 43, to 41. This shows a constant speed, until a final decrease. This choice is incorrect.

Table 4:

In this table, the speed goes from 45, 43, 41, 41 and ends at 41. This shows an initial decrease, then a constant speed. This is incorrect.

Therefore, only table 2 shows an increasing, then decreasing speed.

6 0

3 years ago

(1 point) The intensity of light at a depth of x meters below the surface of a lake satisfies the differential equation dIdx=(−1

snow_tiger [21]

Answer:

0.573 m

Step-by-step explanation:

a. To find the depth, x, we first solve the differential equation to find the expression for I

dI/dx = (-1.21)I

dI = (-1.21)Idx

dI/I = -1.21dx

Integrating both sides, we have

∫dI/I = ∫-1.21dx

㏑I = -1.21x + C

I = exp(-1.21x + C)

I = exp(-1.21x)exp(C) Let exp(C) = A

I =Aexp(-1.21x)

when x = 0, I = L. Substituting these into the equation, we have

L = Aexp(-1.21 × 0)

L = Aexp(0)

L = A

So, I = Lexp(-1.21x)

we want to find x when I = L/2.

So, L/2 = Lexp(-1.21x)

1/2 = exp(-1.21x)

-1.21x= ㏑(1/2)

-1.21x= -㏑2

x = -㏑2/-1.21

x = 0.693/1.21

x = 0.573 m

6 0

3 years ago

How would i number the graph

tiny-mole [99]

Put numbers up and down the X and Y axis showing what the graph values are. (Ex: see picture ) make sure you do it accurately based on what the slope will look like.

8 0

4 years ago

The supplement of an angle is 60 degrees less than twice the supplement of the complement of the angle. Find the measure of the

xxMikexx [17]

Answer:

70 degrees.

Step-by-step explanation:

Let the angle be x then:

Its supplement is 180-x.

Its complement = 90 - x.

The supplement of the complement = (180 - (90 - x) = 90 + x.

So we have the equation:

180 - x = 2(90 + x) - 60.

180 - x = 180 + 2x - 60

- x - 2x = 180 - 180 - 60

-3x = -60

x = 20 degrees

So the measure of the complement = 90 - 20 = 70 degrees.

3 0

3 years ago