Please help

Evaluate.
(-3)³-4²=

The area in a square meter is 5$. We can equate the two expressions for the length of the edge of the square and solve for x:

$4x - 15 = 20 - 3x$

$7x = 35$

$x = 5$

The length of one edge of the square is 5 meters, so the area of the square is $5^2 = 25$ square meters. Therefore 5$ is the solution for the $4x-15$ and  20 - 3x$ equation. 15 and 3 will exchange their places to form 7$ and 35$ and 5$ is the end result of the problem that is given.

To know more about area in a square

brainly.com/question/1658516

#SPJ4

A data set has a mean of 55 and a standard deviation of 6. The value 62 falls in approximately the 12.19th percentile of the data set.

To determine the percentile that the value 62 falls in, we need to calculate its z-score and then use the z-table to find the corresponding percentile.

The z-score measures the number of standard deviations a value is from the mean. It is calculated using the formula:

z = (x - μ) / σ

Where:

z is the z-score

x is the value (62 in this case)

μ is the mean of the data set (55)

σ is the standard deviation of the data set (6)

Plugging in the values, we have:

z = (62 - 55) / 6

z = 7 / 6

z ≈ 1.1667

To find the percentile corresponding to this z-score, we can use the z-table. The z-table provides the area under the standard normal distribution curve for different z-scores.

Looking up the z-score of 1.1667 in the z-table, we find that the area to the left of this z-score is approximately 0.8781. This means that approximately 87.81% of the data falls below the value of 62.

To determine the percentile, we subtract this value from 1 (to account for the area to the right of the z-score):

Percentile = 1 - 0.8781

Percentile ≈ 0.1219

Therefore, the value 62 falls in approximately the 12.19th percentile of the data set.

To know more about standard deviation refer here:

https://brainly.com/question/33137879#

#SPJ11

Complete Question:

A data set has a mean of 55 and a standard deviation of 6. What percentile does the value 62 fall in?

$5 for 1 shirt

y = cost

x = number be shirts

10y = 2x

5y = x

The point at coordinates (4, 0) meters, directly in front of one of the speakers and perpendicular to the plane of the speakers, will experience maximum constructive interference.

In the scenario of two speakers, when a point is located directly in front of one of the speakers and perpendicular to the plane of the speakers, it is in what is known as the "forward direction". This means that the sound waves from both speakers are in phase at that point, leading to constructive interference.

Constructive interference occurs when the peaks of two sound waves align, resulting in a combined wave with a higher amplitude. Since the point is equidistant from the two speakers and directly in front of one of them, the sound waves from both speakers will reach the point in phase, reinforcing each other and producing maximum constructive interference.

As a result, at the point (4, 0) meters, there will be an increased sound intensity due to the constructive interference of the sound waves from the two speakers.

Learn more about perpendicular here

https://brainly.com/question/28063031

#SPJ11

The proof to show that ∆AEC and ∆BDC are similar in the blanks is below;

<BDC and <AEC are right angles by the definition of perpendicular lines and all right angles are congruent, So, <BDC≅AEC. Both ∆AEC and ∆BDC share <C, and <C ≅ <C by the reflexive property. Therefore, ∆AEC ~ ∆BDC by the SAS criterion for proving similar triangles.

A triangle is a three sided polygon. The type of triangles includes:

Read more on triangles:

https://brainly.com/question/17335144

#SPJ1

The number of measurements, and the mode being the most frequently occurring value among the snowfall measurements.

The mean, median, and mode are all useful measures of central tendency when researching the amount of snowfall in Cleveland from December to February. The mean is calculated by adding up all of the snowfall measurements and dividing that by the number of measurements. For example, if there were 4 snowfall measurements of 10, 20, 30 and 40 inches, the mean would be 25 inches (10+20+30+40 / 4). The median is the middle value of the snowfall measurements when they are arranged from least to greatest. In this example, the median would be 25 inches as well. The mode is the most frequently occurring value among the snowfall measurements. In this example, the mode is also 25 inches.

The mean, median and mode are all useful measures of central tendency when researching the amount of snowfall in Cleveland from December to February, with the mean and median being calculated by adding up all of the snowfall measurements and dividing that by the number of measurements, and the mode being the most frequently occurring value among the snowfall measurements.

Learn more about mean, median, and mode here:

https://brainly.com/question/29836513

#SPJ4

The proper rounding of 190.4592785 to the nearest tenth gives 190.4.

Look at the next place value to the right to round a number to the closest tenth (the hundredths). Simply eliminate all the numbers to the right if the number is 4 or fewer.

Add one to the digit in the tenth place if the number is five or above, and then eliminate all the digits to the right.

To round digits to the tenth means after the decimal there is only one number. It is tenth place.

190.4592785 = 190.4

Therefore, the nearest round to the tenth is 190.4.

To learn more about round to the tenth, refer to the below link:

https://brainly.com/question/2021190

#SPJ1

Answer:

1/2 assuming you would start at (0,0)

Step-by-step explanation:

Hope this helps

The total number of red marbles in the vase are 10.

A ratio is described as a comparison between two amounts with the same unit to determine the amount of 1 quantity is contained in the other. Ratios are divided into two sorts.

The first is a part-to-part ratio, and the second is a part-to-whole ratio. The part-to-part ratio expresses the relationship between 2 separate entities or groupings.

Now, according to the question;

Let 'x' be the red marbles in the vase.

Let 'y' be the orange marbles in the vase.

The total number of marbles in the vase are 60

x  + y = 60 (equation 1)

The ratio of red marbles to orange ones is 1:5.

Thus, x/y = 1/5

cross multiplying;

5x = y

or y = 5x

substitute the value of y in equation 1;

x  + y = 60 (equation 1)

x  + 5x = 60

6x = 60

x = 10  (red marbles)

Thus, the number of red marbles in the vase are 10.

To know more about the ratio, here

https://brainly.com/question/25927869

#SPJ4

Answer:

30=2(10 x w)

Step-by-step explanation:

P=2(l x w)

Perimeter(P) equals two times length(l) times width(w)

Hope this helps

No. It is not true that if B is produced by interchanging two rows of A, then detB = detA.

det(B) = -det(A) is the correct formula for calculating the determinant of a matrix obtained by interchanging two rows of another matrix.

Two rows of a matrix are interchanged, the determinant of the resulting matrix is equal to the determinant of the original matrix multiplied by -1.

Therefore, we have det(B) = -det(A).

This can be seen from the formula for calculating the determinant of a matrix.

When two rows are interchanged, the determinant of the resulting matrix is equal to the determinant of the original matrix multiplied by -1 raised to the power of the number of row interchanges.

Since we have interchanged two rows, the power is 2, so the determinant of the resulting matrix is equal to the determinant of the original matrix multiplied by (-1)² = 1.

det(B) = -det(A) is the correct formula for calculating the determinant of a matrix obtained by interchanging two rows of another matrix.

For similar questions on interchanging

https://brainly.com/question/17684395

#SPJ11

Answer and Step-by-step explanation:

12.[p4-7p2-32p-15]/[p-4]

p*p*p*p-7*p*p-32p-15/p-4

4p-7*2p-32p-15/p-4

4p*2p-32p/p-7-15-4

8p-32p/p-7-15-4

8p-32p-26

-24p-26

11.[x4-2x3-29x2-43x+8/[x-7]

x*x*x*x-2*x*x*x-29*x*x-43x+8/x-7

4x-2*3x*-29*2x-43x+8/x-7

4x*3x*2x-43x/x-2-29+8-7

24x-43x/x-32

-19x-32

10.[2x3-14x+10/x/3]

2*x*x*x-14x+10/x/3

2*3x-14x+10/x/3

2*10/3*3x-14x/x

20/3*3x-14x

20/3*[-11x]

9.[m3-12m2+33m]/[m-5]

3m-12*m*m+33m]/[m-5]

3m*2m+33m/m-12-5

6m+33m-17

39m-17

Just use the same principle to get the rest of the two questions[I can't see them clearly]

The apothem is 15 inches, the perimeter is calculated to be 99.41 while the area is given as 745.59

The side of the octagon is given by x inches

the interior side of the angles can be gotten by:

8-2 * 180 / 8 sides

= 135

We have to find the value of the angles

<abc = 180 - 135 = 45 degree

<acb = 180 - 135 = 45 degrees

x² = 2AB²

AB = x/√2

30 =  x/√2 + x +  x/√2

x = 30 / 1 + √2

The apothem = 30 / 2

= 15

perimeter = 8x

= 8(30 / 1 + √2)

= 99.4 inches

area = 0.5 x 15 x 99.4

= 745.59

Read more on an octagon here:

https://brainly.com/question/358118

#SPJ1

Answer:

1.4

Step-by-step explanation:

0.5f-2.3g where f=12 and g=2

substitute 12 in for f and 2 in for g and solve

0.5(12)-2.3(2)

6-4.6=1.4

Answer:

-4.6g + 6

Step-by-step explanation:

(0.5)(12)−2.3g(2)

=6+−4.6g

Answer:

=−4.6g+6

To formulate a linear programming model, let N represent the amount spent on newspaper advertising and R represent the amount spent on radio advertising.

The objective is to maximize the value of total audience exposure, which can be measured using the exposure index. Let's denote this as Z.
The constraints are as follows:
1. The budget constraint: N + R ≤ $5,000.
2. At least 25% of the budget must be spent on each type of media: N ≥ $1,250 and R ≥ $1,250.
3. The amount spent on local newspaper advertising must be at least twice the amount spent on radio advertising: N ≥ 2R.
Therefore, the linear programming model can be written as follows:
Maximize Z = 40N + 70R
Subject to:
N + R ≤ 5000
N ≥ 1250
R ≥ 1250
N ≥ 2R
(b) To solve this problem using Excel Solver, you can set up a spreadsheet model with the following columns: Newspaper Dollars Allocated, Radio Dollars Allocated, Total Exposure Index.
In the Newspaper Dollars Allocated column, input the formula "=N" to represent the amount spent on newspaper advertising. In the Radio Dollars Allocated column, input the formula "=R" to represent the amount spent on radio advertising.
In the Total Exposure Index column, input the formula "=40*N+70*R" to calculate the total exposure index based on the allocated budget.
Use Excel Solver to set up the optimization problem. Set the objective cell as the Total Exposure Index column and set the constraints for the budget, minimum spending, and newspaper-radio ratio.
After running the Solver, it will provide the optimal values for N and R (the amount spent on newspaper and radio advertising, respectively), as well as the maximum value of total audience exposure (rounded to the nearest integer).

To know more about linear programming visit:

https://brainly.com/question/30763902

#SPJ11

Answer:

$143

You multiply 15 by 4 = 60

add 70 = 130

divide 30 and 15 = .50

multiply 26 by .50 = 13

add 130 and 13 = 143

Answer: 63

Step-by-step explanation:

The standard deviation is a statistic that expresses how much variance or dispersion there is in a group of numbers. While a high standard deviation suggests that the values are dispersed throughout a wider range, a low standard deviation suggests that the values tend to be close to the established mean.

How to calculate the probability distribution's mean: Steps

A specific genetic mutation affects 4% of the population. 300 persons are chosen at random. Find the standard deviation for the proportion of the 300 groups who have the genetic mutation.

Standard deviation is calculated as follows: 0.04 * 0.93/300 * sqrt(p*(1-p)/n) (0.000124).

To learn more about Standard deviation refer to:

https://brainly.com/question/475676

#SPJ4

If a randomly chosen parachute fails to open, then the probability that it is from company c1 is 45.5%.

In the given question, the air force receives 40 percent of its parachutes from company c1 and the rest from company c2.

The probability that a parachute will fail to open is 0.0025 or 0.002, depending on whether it is from company c1 or c2, respectively.

If a randomly chosen parachute fails to open, then we have to find the probability that it is from company c1.

The parachute receive from P(c1) = 40% = 0.40

The parachute receive from P(c2) = 60% = 0.60

The probability of fail to open from company P(F/c1) = 0.0025

The probability of fail to open from company P(F/c2) = 0.002

The probability of random chosen parachute fails to open that it is from company c1 is

P(c1/F) = P(c1∩F)/P(F)

P(c1/F) = P(F/c1)P(c1)/P(F/c1)P(c1)+P(F/c2)P(c2)

P(c1/F) = 0.0025*0.40/0.0025*0.40+0.002*0.60

P(c1/F) = 0.001/0.001+0.0012

P(c1/F) = 0.001/0.0022

P(c1/F) = 0.455

P(c1/F) = 45.5%

To learn more about probability link is here

brainly.com/question/11034287

#SPJ4

In the inpatient setting, a CPT code (Current Procedural Terminology) would typically be assigned by the hospital for a procedure code to accurately bill for the services provided during the patient's stay.

This code is used to describe the specific medical service or procedure performed, such as a surgery or diagnostic test. It is important for hospitals to accurately assign CPT codes to ensure proper billing and reimbursement for the services provided. Additionally, the use of standardized CPT codes helps to facilitate communication and record-keeping across different healthcare providers and facilities.

Visit here to learn more about Current Procedural Terminology brainly.com/question/28296339

#SPJ11

(a) The expected value of the sample mean is 65 for both n = 16 and n = 32. (b) The conclusion about the normality of the sampling distribution cannot be determined based on the given information. (c) The probability that the sample mean falls between 65 and 68 cannot be calculated without additional information.

The sampling distribution of the sample mean with n = 16 and n = 32 can be approximated as normally distributed if certain conditions are met (e.g., if the population is normally distributed or the sample size is sufficiently large).

(a) The expected value (mean) of the sample mean for both n = 16 and n = 32 is 65.

(b) To determine whether the sampling distribution of the sample mean is normally distributed, we need to consider the sample size and assess if it meets the conditions for normality. In this case, the answer cannot be determined solely based on the information provided. Additional information, such as the population distribution or the central limit theorem, is needed to make a conclusive statement.

(c) Since the normality assumption is made for n = 16, we can calculate the probability that the sample mean falls between 65 and 68. However, the necessary information to calculate this probability is not provided, such as the population standard deviation or any relevant sample statistics. Therefore, the probability cannot be determined.

To know more about sampling distribution,

https://brainly.com/question/29168344

#SPJ11

The values of w typically vary, on average, from the mean of the distribution about 3.46.

The degree of data dispersion from the mean is indicated by the standard deviation. A low standard deviation indicates that the data are grouped around the mean, whereas a high standard deviation shows that the data are more dispersed.

For a geometric(p = 0.25) distribution, the variance is computed here as:

Var(X) = (1 - p)/ p2 = (1 - 0.25) / 0.252 = 12

Therefore, the standard deviation is computed as:

= ✓(12) = 3.46 observations.

This is the standard deviation of the given distribution here.

Learn more about standard deviation on:

https://brainly.com/question/24298037

#SPJ1

The value of SSE (sum squared error) is 40 in the given analysis of the variance problem if SST = 120 and SSR = 80. Option b is correct.

Here the words SSE means Sum Squared Error, SST means Sum of Squares Total and SSR means Sum of Square Regression.

In the SSE accuracy measure, errors are squared and then added. It is used when the data points are similar in magnitude.

The formula is SST = SSR + SSE ⇒ SSE = SST - SSR

The given values of the analysis of the variance problem are

SST = 120; SSR = 80

Then, the value of SSE = SST - SSR = 120 - 80 = 40

So, option b is correct.

Learn more about the sum squared error here:

https://brainly.com/question/28046641

#SPJ1

Answer:

The car price decreased by $2,268.

The price of the car now is $33,732.

Step-by-step explanation:

Multiply 0.063 (6.3% in decimal form) by $36,000 to get $2,268, which is how much the price decreased.

Then subtract 2,268 from 36,000 to get $33,73, which is the price of the car after the decrease.

Answer:

Step-by-step explanation:

6.3 : 100 = x : 36000

x = (36000 * 6.3)/100 = $2268 (decrease in price)

Price of new model: 36000 - 2268 = $33732

Answer:

CP = 4500

SP = 5175

As the SP is greater than the CP, it is a profit

Profit = 675

Profit percent = (Profit / CP) * 100

=> (675/4500) * 100

=> 675/45 (As the 2 zeros of hundred in the numerator is cancelled by the 2 zeros of the 4500 in the denominator)

=> 15 (Once you divide 675 by 45)

=> 15 % profit

Therefore, Profit = 15 %

If my answer helped, kindly mark me as the brainliest!!

Thank You!!

Answer:

B

Step-by-step explanation:

You can not take a square root of a negative number, because than it will become imaginary. So X has to be equal to or greater than 10.

Answer:

26.a

27 c

28.a

Step-by-step explanation: