Help Please! Easy Question I will mark brainest :)

Answer:

4

Step-by-step explanation:

The median is the value that separates a dataset into two halves. To find the median, you need to put all the values in order from smallest to largest. If there is an odd number of values, the median is the middle value. If there is an even number of values, the median is the average of the two middle values.

To solve the dataset:

3 8 1 0 10 4 8

We need to first put the values in order:

0 1 3 4 8 8 10

Because there are seven values (an odd number), the median is the middle value, which is 4.

when developing the formula for s(M1-M2), we consider the amount of error for each sample mean, the estimated standard error of M as a statistic, and use an average estimate when dealing with different sample sizes. This helps us determine the total amount of error when using two sample means to approximate two population means.

The independent-measures t statistic is used to determine the total amount of error when using two sample means to approximate two population means. To develop the formula for s(M1-M2), we consider the following points:

1. Each of the two sample means represents its own population mean, but there is some error involved in each case. This error is referred to as the "amount of error."

2. The "amount of error" associated with each sample mean is measured by the estimated standard error of M (sM). This statistic helps us understand how much the sample means may deviate from their respective population means.

3. To find the total amount of error involved in using two sample means to approximate two population means, we consider the size of each sample. If the samples are the same size, we can find the error from each sample separately and add the two errors together.

4. When the samples are of different sizes, a "pooled" or "average estimate" is used to account for the different sample sizes. This approach allows the larger sample to carry more weight in determining the final value of the t statistic.

In summary, when developing the formula for s(M1-M2), we consider the amount of error for each sample mean, the estimated standard error of M as a statistic, and use an average estimate when dealing with different sample sizes. This helps us determine the total amount of error when using two sample means to approximate two population means.

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Answer:

\(100000\)

Step-by-step explanation:

\(10^{5}\)  means \(10\) multiplied by itself by \(5\) times.

\(10^5 = 100000\)

Hope this helps :)

Answer:

1/2 > 3/8

Step-by-step explanation:

To compare the answers, we need to change them to the same denominator.

2x4=8

So we can create an equivent fraction of 1/2 by dividing both numbers by 4:

1x4=4

2x4=8

1/4=4/8

Now we are comparing 4/8 and 3/8, and we can see clearly that 4/8 is greater than 3/8 because 4 is greater than 3.

Hope this helped!

Answer:

x=38 degree

Step-by-step explanation:

x+43+2x-15+x=180

4x+28=180

4x=180-28

4x=152

x=38

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Answer:

The t-shirt is 60% off.

Step-by-step explanation:

If the t-shirt cost ten and is on sale for $4, then the t-shirt is sold for 6/10 less. 6/10=60%. The t-shirt is 60% off.

The simplified version of (sec a - cosec a) / (sec a + cosec a)  is cosec 2a(cosec 2a - 2) / (sec²a - cosec²a).

The study of correlations between triangles' side lengths and angles is known as trigonometry. The field was created in the Hellenistic era in the third century BC as a result of the use of geometry in astronomical research.

Given:

(sec a - cosec a) / (sec a + cosec a)

Multiply the numerator and denominator by (sec a - cosec a)

(sec a - cosec a) / (sec a + cosec a)  × (sec a - cosec a)

(sec²a + cosec²a -2sec a cosec a) / (sec²a - cosec²a)

As we know,

\(sec^2a + cosec^2a = sec^2a \ cosec^2a\)

sec² a cosec² a - 2sec a cosec a /  (sec²a - cosec²a)

sec a cosec a (sec a cosec a - 2) / (sec²a - cosec²a)

cosec 2a(cosec 2a - 2) / (sec²a - cosec²a)

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Answer:

5/2

Step-by-step explanation:

(18/15)*(25/12)=(18*25)/(15*12)=450/180=5/2

Answer:

k = - 8

Step-by-step explanation:

given that (x - a) is a factor of f(x) , then f(a) = 0

given

(x - 1) is a factor of f(x) then f(1) = 0 , that is

3(1)³ + 5(1) + k = 0

3(1) + 5 + k = 0

3 + 5 + k = 0

8 + k = 0 ( subtract 8 from both sides )

k = - 8

Answer: 11/7 tons

Step-by-step explanation:

To determine how much sugar one container can hold, you need to divide the total amount of sugar (6 2/7 tons) by the number of containers (4).

First, convert the mixed number 6 2/7 to an improper fraction:

(7 * 6) + 2 = 44/7

Now, divide 44/7 tons by 4 containers:

(44/7) / 4 = (44/7) * (1/4) = 44/28

Simplify the fraction:

44/28 = 11/7

So, each container can hold 11/7 tons of sugar.

Answer:

Yes

Step-by-step explanation:

If you observe you can see that 1x=2y

For example 2(x)=4(y)

If you insert this in the others it makes sense making it proportional.

Hope this helps

:)

Using the distance formula, the distance around the park = 190.6 units.

Distance formula is given as, \(\sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}\).

To find the distance around the park, find the length of PQ, QR, and PR:

Use the distance formula to find the distance between points P and R:

P(10, 50)

R(80, 10)

PR = √[(80−10)² + (10−50)²]

PR = √[(70)² + (−40)²]

PR = √(4900 + 1600)

PR = √6500

PR ≈ 80.6 units

PQ = |50 - 10| = 40 units

QR = |80 - 10| = 70 units

Thus, the distance around the park = PQ + QR + PR = 40 + 70 + 80.6

Thus, the distance around the park = 190.6 units.

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Answer:

$187.5

Step-by-step explanation:

25% of $750 = $187.5!

All I had to do was divide 750 by 4 and got my answer. You can also double check by multiplying 187.5 by 4 and you'll get the same answer.

Answer: 0.06

Also could you mark my answer as brainliest? It helps and doesnt hurt

Answer: 0.06

Step-by-step explanation:

Answer:

You didn't specified that it was a right angled triangle or an Equilateral triangle,That's why I have created one as per an Equilateral triangle..........

Step-by-step explanation:

In this triangle QR=6.5 and PR=7.8..

So It's the right triangle if this is an  Equilateral triangle and which doesn't have the specified value of PQ..That's why I have taken a random value of PQ..

Step-by-step explanation:

Step1

Make y the subject of the formula from equation 2

-15y/-15=-15-15x/-15

Y=15+15/15..............3

Substitute equ..... 3 to equ.... 1

5x-5(15+15/15)=1

5x-1(15+15/3)=1

3*5x-1*3(15+15/3)=1*3

15x-1(15+15)=3

15x-15-15pp=3

15x-30=3

15x=3+30

15x/15=33/15

x=2.2

From equation.....

5x-5y=1

5(2.2)-5y=1

11-5y=1

-5y=1-11

-5y/-5=10/-5

Y=-2

PROVE

FROM EQUATION ONE

5X-5Y=1

5(2.2)-5(-2)=1

11-10=1

1=1

SO Y=-2 AND X=2.2

The median splits the data in the box and whisker plot into two equal halves, with 50% of the data falling below the median and 50% above the median.

In a box and whisker plot, the median is represented by a vertical line or box within the plot. The box represents the interquartile range (IQR), which contains the middle 50% of the data. The lower edge of the box corresponds to the first quartile (Q1), where 25% of the data falls below, and the upper edge of the box corresponds to the third quartile (Q3), where 75% of the data falls below.

The whiskers extend from the box and represent the minimum and maximum values in the dataset, excluding any outliers. The length of the whiskers may vary depending on the range of the data and the presence of outliers.

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The experimental values are 1.099 x 10^7 m^-1 and 1.096 x 10^7 m^-1, respectively. The averaglevalue is 1.0975 × 10^7 m⁻¹. The literature value of the Rydberg constant is 1.0974 x 10^7 m^-1. The percent error is approximately 0.0091%.

The Rydberg equation for hydrogen is given by:

1/λ = R (1/n1² - 1/n2²)

where λ is the observed wavelength, R is the Rydberg constant, and n1 and n2 are the initial and final energy levels, respectively.

For the first observed wavelength of 474.5 nm:

1/474.5 = R (1/1² - 1/n2²)

Solving for n2, we get:

n2 = 4.02

Rounding to the nearest integer, n2 = 4.

For the second observed wavelength of 657.0 nm:

1/657.0 = R (1/1² - 1/n2²)

Solving for n2, we get:

n2 = 3.03

Rounding to the nearest integer, n2 = 3.

To calculate the experimental value of the Rydberg constant for each wavelength, we can rearrange the Rydberg equation:

R = (1/λ) / (1/n1² - 1/n2²)

Using the values of n2 calculated above, we can solve for R for each wavelength:

For the first wavelength:

R = (1/474.5) / (1/1² - 1/4²) = 1.099 × 10^7 m⁻¹

For the second wavelength:

R = (1/657.0) / (1/1² - 1/3²) = 1.096 × 10^7 m⁻¹

Taking the average of these two values, we get:

Ravg = (1.099 × 10^7 + 1.096 × 10^7) / 2 = 1.0975 × 10^7 m⁻¹

The literature value of the Rydberg constant is 1.0974 × 10^7 m⁻¹, so the % error in our experimental value is:

% error = [(Rlit - Ravg) / Rlit] × 100% = [(1.0974 × 10^7 - 1.0975 × 10^7) / 1.0974 × 10^7] × 100% = 0.0091%

Therefore, our experimental value is very close to the literature value with a very small % error.

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Answer: Please upload the image or PDF.

Answer:

Step-by-step explanation:

(-1 - 1)/(4 - 3)= -2/1= -2

y - 1 = -2(x - 3)

y - 1 = -2x + 6

y = -2x + 7

Answer:

-2

Step-by-step explanation:

-1 -1

4-3  

-2/1= -2

Answer:

28%

Step-by-step explanation:

Answer:

4x3+6x6=48

Step-by-step explanation:

PEMDAS

4x3=12

6x6=36

12+36=48

therefore, the answer is 48

For:

Use distributive property:

----------------------------------------------------

Let:

x = Unknown number

When the number x is increasesd by 35 the result is 38, so:

When we simplify an equatiοn and end up with a cοntradictiοn like this, it means that the equatiοn has nο sοlutiοn.

The intersectiοns οr meetings οf the lines οr planes that represent the linear equatiοns are knοwn as the sοlutiοns οf linear equatiοns. The set οf values fοr the variables in every feasible sοlutiοn is knοwn as a sοlutiοn set fοr a system οf linear equatiοns.

Nοt a Sοlutiοn

If there is nο intersectiοn οf any lines, οr if the graphs οf the linear equatiοns are parallel, then the system οf linear equatiοns cannοt be sοlved.

The equatiοn 5 + 9z = 9z can be simplified as fοllοws:

5 + 9z = 9z

5 = 0

This is a cοntradictiοn since 5 cannοt be equal tο 0. Therefοre, there is nο sοlutiοn fοr this equatiοn.

In general, when we simplify an equatiοn and end up with a cοntradictiοn like this, it means that the equatiοn has nο sοlutiοn.

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Answer:

2.44 miles

Step-by-step explanation:

Give the following :

Average miles to school = 12 miles per hour

Average Miles from school = 15 miles per hour

Total ride time : ( time to school + time from school) = 22 minutes = (22/60) = 0.3667

Recall:

Speed = distance / Time

Time = distance / speed

Let distance = d

For the scenario described :

d/12 + d/15 = 0.3667

(5d + 4d) / 60 = 0.3667

5d + 4d = 22

9d = 22

d = 22/9

d = 2.44 miles

Answer:

Step-by-step explanation:

The given quadratic must be rewritten in standard form before anything else is done:  -2x^2 + 8x - 8 = 0.  The coefficients of the x terms are {-2, 8, -8}.

The discriminant b^2 - 4ac is therefore (8)^2 - 4(-2)(-8), or  64 -  64, or 0.

A zero discriminant points to two real, equal solutions.

1/4

To learn more about function,Given function is (sqrt(x + 1) - 2) / (x - 3).

To find the value of lim as x approaches 3, let's first calculate the value of the function at x = 3.

Plug x = 3 in the given function:

= (sqrt(3+1)-2)/(3-3) = 0/0

As we can see, we get 0/0 which is an indeterminate form. Let's find the derivative of the function f(x) using the formula:

f(x) = (sqrt(x + 1) - 2) / (x - 3)

f'(x) = [(1/2) * (x + 1)^-0.5 * 1] * (x - 3) - [(sqrt(x + 1) - 2) * 1] / (x - 3)^2

We can simplify the above equation as:

f'(x) = (2 - sqrt(x + 1)) / (2 * (x - 3)^2)

Let's now calculate the value of the derivative at x = 3:

f'(3) = (2 - sqrt(3+1)) / (2 * (3 - 3)^2) = (2 - 2) / (2 * 0) = undefined

Since f'(3) is undefined, let's now use L'Hopital's rule to find the value of the limit of the function as x approaches 3.

Taking the derivative of the numerator and denominator separately and then solving the limit, we get:

lim as x approaches 3 [(sqrt(x + 1) - 2) / (x - 3)] = lim as x approaches 3 [((1/2) * (x + 1)^-0.5 * 1) / 1] / [-1] = - 1 / 4

Hence, the value of the limit of the function as x approaches 3 is 1/4.

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Answer:

C

Step-by-step explanation:

Linear Function- points on a graph that make up a straight line negative or positive

I used a graphing calculator and tried every possible one and C is the only one that made a  perfect straight line.

hope this helps ya! <3 me if it does

Answer:

40

Step-by-step explanation: