PLEASE ANSWER !

Simplify (3x - 5) + (5x + 1)

A)8x - 6
B)8x +4
C)8x - 4
D)2x - 4

Answer:

A and C

Step-by-step explanation:

42/200 = .21

76/200 = .38

Answer:

Apples and Pears

Step-by-step explanation:

21 % = Apples

41 % = Oranges

38 % = Pears

Probablity of less than 40% = pears and apples

HOPE THIS HELPS

PLZZ MARK BRAINLIEST

An appropriate statement of the null hypothesis, H₀ is that: A. The proportion of contaminated wrist-watches from medical personnel is the same as the proportion of contaminated wrist-watches from security guards, i.e., H0: p = 46.6%.

In Mathematics, a null hypothesis (H₀) can be defined the opposite of an alternate hypothesis (Ha) and it asserts that two (2) possibilities are the same.

For an experiment to test the contamination of medical personnel wrist-watches at a New York hospital, the appropriate null hypothesis and alternative hypothesis would be given by this mathematical expression:

H₀: p = 10.

Ha: p < 10.

In this context, we can logically that the proportion of contaminated wrist-watches would be the same for both sample proportion i.e., H₀: p = 46.6%.

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Answer:

yes

Step-by-step explanation:

To determine if (- 8, - 7 ) is a solution to the equation

Substitute the values of x and y into the equation and if both sides are equal then it is a solution.

left side : 3(- 8) + 10 = - 24 + 10 = - 14

right side : 2y = 2(- 7) = - 14

Since both sides are - 14 then (- 8, - 7 ) is a solution to the equation.

Answer:

87

Step-by-step explanation:

1x0=97x1x0xratio=87

To ensure the best test results, Anita should be provided with the following information before her spirometry:

1. Instructions for taking the test: Anita should be thoroughly explained about how the spirometry test works and what steps she needs to follow. This includes taking a deep breath and blowing as hard as she can into the spirometer mouthpiece. It is important to emphasize that she needs to repeat this procedure a few times and take deep breaths between each exhale.

2. Emphasize the importance of taking medication as prescribed: Anita should be reminded of the importance of taking her medications as prescribed, including on the day of the test. It is crucial for her to bring her medications to the test appointment.

3. Avoid certain foods and drinks: Anita should be informed to avoid consuming certain substances before the spirometry test, such as caffeine, alcohol, and heavy meals. These can potentially affect the accuracy of the test results.

4. Arrive early for the test: Anita should be advised to arrive early for the test to allow herself sufficient time to relax and calm down before the procedure. This can help ensure more accurate results.

The rationale behind providing these instructions and information is that spirometry is a lung function test that measures the amount and speed of air being breathed in and out. By following the instructions and guidelines, Anita can achieve optimal results, aiding in the diagnosis and assessment of lung conditions.

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Answer:

\(2^{2}\)+\(3^{2}\)+5

4+9+5

 18

Answer:[6/36]

Step-by-step explanation:

Answer:

Brendands dogs mass is kilograms is 25.7.

Answer:

I think the answer would be (-1,-4)

Step-by-step explanation:

Just count from where the J is 7 left and then 4 down and it would get you (-1,-4).

I hope this helps! :) Sry if I get it wrong.

Answer:

Annalise is correct because the outputs are closest when x = 1.35

Step-by-step explanation:

The solution to the equation 1/(x-1) = x² + 1 means the one x value that will make both sides equal. If we look at the table, notice how when x = 1.35, f(x) values are closest to each other for both equations, signifying that x = 1.35 is approximately the solution. Thus, Annalise is correct.

High-def television sets would probably be distributed using an intensive strategy. Therefore, option B. is correct.

Intensive distribution refers to a strategy where a product is made widely available through as many outlets as possible. This strategy is typically employed for products that have high demand, are low-cost, and require extensive market coverage. In the case of high-definition television sets, they are popular consumer electronics with a significant market demand.

To determine whether intensive distribution is suitable for high-def television sets, we consider the characteristics of the product. High-definition television sets are relatively low-cost compared to other options in the market, and they are in demand by a broad range of consumers. These factors suggest that an intensive distribution strategy would be appropriate for this product.

Based on the analysis, high-def television sets would most likely be distributed using an intensive strategy. This approach would ensure broad availability and accessibility for consumers, leveraging the product's popularity and fulfilling market demand. By making these television sets widely accessible through multiple outlets, manufacturers can reach a larger customer base, maximize sales potential, and effectively compete in the consumer electronics market.

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Answer:

(323)(2)=7 1/3

(Decimal: 7.333333)

Step-by-step explanation:

Answer:

7 \(\frac{1}{3}\)

Step-by-step explanation:

\(3 \frac{2}{3}\)  × 2

\(\frac{11}{3}\)  × 2

\(\frac{11}{3}\) × \(\frac{2}{1}\) = \(\frac{22}{3}\)

\(\frac{22}{3} = 7 \frac{1}{3}\)

Henry could only see one line since both lines had the same slope, which means that the graphs of both equations will be identical and hence overlap.

Linear equations in a system 3x + 2y = 4, and 9x + 6y = 12

We must demonstrate why Henry could only make out one line when he plotted the equations 3x-2y=4 and 9x-6y=12 on a graph.

Take the provided linear equation system into consideration.

3x - 2y = 4 ................(1)

9x - 6y = 12 ..................(2)

Due to the fact that equation (2) is a multiple of equation (1), 3 (3x - 2y = 4) = 9x - 6y = 12

The slopes of the provided equations are also same.

Difference with regard to x for equation (1) yields,

additional to equation (2),

With regard to x, we can differentiate to get,

The graphs of both equations will overlap since both lines have the same slope and hence have the same appearance on the graph.

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Answer:

$1.68

Step-by-step explanation:

1 dozen is 12.

18 is the same as 12 + 6

6 eggs is half of 12 eggs.

Since 12 eggs cost $1.12, then 6 eggs cost half of $1.12, or $1.12/2 = $0.56.

18 = 12 + 6, so

the price of 18 eggs = the price of 12 eggs + the price of 6 eggs.

price of 18 eggs = $1.12 + $0.56 = $1.68

♥ The given parameters are:

x = -2, y = 3 and z = -1/5

The expression is given as xyz

To evaluate the expression when x = -2, y = 3 and z = -1/5, we substitute x = -2, y = 3 and z = -1/5 in expression xyz

This is represented as xyz = -2 * 3 * -1/5

Evaluate the product in the above expression

So, we have xyz = 6/5

Hence, the value of the expression when x = -2, y = 3 and z = -1/5  is 6/5  ♥

The number of cookies in the jar initially was 42

To find out how many cookies were in the jar initially, we can use algebra to represent the problem. Let x be the number of cookies in the jar initially. After Latoya took half of the cookies, Mark took 1/3 of the remaining cookies, Kandi took 1/4 of the remaining cookies, and Shannon took 1 cookie, there are 2 cookies left in the jar.

We can use this information to set up the equation:

x/2 - (x/2)/3 - (x/2)/4 - 1 - 2 = 0.

By solving this equation, we get x = 42. This means there were 42 cookies in the jar initially. To find out how many cookies were there before Latoya came, we just add the 2/3 of a cookie that was left over to the 2 whole cookies we know of.

So, 42+2/3 = 42.67 which means 42 cookies were there before Latoya came.

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The principal investment required to get a total amount of $3,700.00 from compound interest at a rate of 3.5% per year compounded 365 times per year over 15 years is $2,287.26.

Compound interest is a method of calculating the interest charge. In other words, it is the addition of interest on interest.

Given Data

Rate = 3.5%

Final Amount = $3,700

Time = 15 Years

First, convert R as a percent to r as a decimal

r = R/100

r = 3.5/100

r = 0.035 per year,

Then, solve the equation for P

P = A / (1 + r/n)^nt

P = 3,700.00 / (1 + 0.035/365)(365)^(15)

P = 3,700.00 / (1 + 0.00010137)^(4745)

P = $2,287.26

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Given statement solution is :- a) Power set for two sets A and B with any 2 elements:

Set A: {1, 2}, Set B: {3, 4}

Power set of A: {{}, {1}, {2}, {1, 2}}

Power set of B: {{}, {3}, {4}, {3, 4}}

b) Power set for two sets A and B with any 3 elements:

Set A: {1, 2, 3}, Set B: {4, 5, 6}

Power set of A: {{}, {1}, {2}, {3}, {1, 2}, {1, 3}, {2, 3}, {1, 2, 3}}

Power set of B: {{}, {4}, {5}, {6}, {4, 5}, {4, 6}, {5, 6}, {4, 5, 6}}

c) Power set for two sets A and B with any 4 elements:

Set A: {1, 2, 3, 4}, Set B: {5, 6, 7, 8}

Power set of A: {{}, {1}, {2}, {3}, {4}, {1, 2}, {1, 3}, {1, 4}, {2, 3}, {2, 4}, {3, 4}, {1, 2, 3}, {1, 2, 4}, {1, 3, 4}, {2, 3, 4}, {1, 2, 3, 4}}

Power set of B: {{}, {5}, {6}, {7}, {8}, {5, 6}, {5, 7}, {5, 8}, {6, 7}, {6, 8}, {7, 8}, {5, 6, 7}, {5, 6, 8}, {5, 7, 8}, {6, 7, 8},

a) Power set for two sets A and B with any 2 elements:

Set A: {1, 2}, Set B: {3, 4}

Power set of A: {{}, {1}, {2}, {1, 2}}

Power set of B: {{}, {3}, {4}, {3, 4}}

Set A: {apple, banana}, Set B: {cat, dog}

Power set of A: {{}, {apple}, {banana}, {apple, banana}}

Power set of B: {{}, {cat}, {dog}, {cat, dog}}

Set A: {red, blue}, Set B: {circle, square}

Power set of A: {{}, {red}, {blue}, {red, blue}}

Power set of B: {{}, {circle}, {square}, {circle, square}}

b) Power set for two sets A and B with any 3 elements:

Set A: {1, 2, 3}, Set B: {4, 5, 6}

Power set of A: {{}, {1}, {2}, {3}, {1, 2}, {1, 3}, {2, 3}, {1, 2, 3}}

Power set of B: {{}, {4}, {5}, {6}, {4, 5}, {4, 6}, {5, 6}, {4, 5, 6}}

Set A: {apple, banana, orange}, Set B: {cat, dog, elephant}

Power set of A: {{}, {apple}, {banana}, {orange}, {apple, banana}, {apple, orange}, {banana, orange}, {apple, banana, orange}}

Power set of B: {{}, {cat}, {dog}, {elephant}, {cat, dog}, {cat, elephant}, {dog, elephant}, {cat, dog, elephant}}

Set A: {red, blue, green}, Set B: {circle, square, triangle}

Power set of A: {{}, {red}, {blue}, {green}, {red, blue}, {red, green}, {blue, green}, {red, blue, green}}

Power set of B: {{}, {circle}, {square}, {triangle}, {circle, square}, {circle, triangle}, {square, triangle}, {circle, square, triangle}}

c) Power set for two sets A and B with any 4 elements:

Set A: {1, 2, 3, 4}, Set B: {5, 6, 7, 8}

Power set of A: {{}, {1}, {2}, {3}, {4}, {1, 2}, {1, 3}, {1, 4}, {2, 3}, {2, 4}, {3, 4}, {1, 2, 3}, {1, 2, 4}, {1, 3, 4}, {2, 3, 4}, {1, 2, 3, 4}}

Power set of B: {{}, {5}, {6}, {7}, {8}, {5, 6}, {5, 7}, {5, 8}, {6, 7}, {6, 8}, {7, 8}, {5, 6, 7}, {5, 6, 8}, {5, 7, 8}, {6, 7, 8},

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Answer:

OK so...

Step-by-step explanation:

The answer is -2x - 1

Combine 3x and -5x and -6 + 5, hope that helps.

Answer:

-2x-1

Step-by-step explanation:

combining like terms:

(3x-5x)+(-6+5)

= -2x+(-1)

=-2x-1

det(A) = -5 and det(B) = 9, the determinants of various matrix expressions are as follows: det(AB) = -45, det(3A) = -125, det(A^T) = -5, det(B^-1) = 1/9, and det(B^4) = 6561.

The determinant of a matrix represents a scalar value that provides information about the matrix's properties. Here are the explanations for each determinant calculation:

det(AB): The determinant of the product of two matrices is equal to the product of their determinants. Hence, det(AB) = det(A) * det(B) = (-5) * (9) = -45.

det(3A): The determinant of a scalar multiple of a matrix is equal to the determinant of the original matrix raised to the power of the scalar. Therefore, det(3A) = (3^3) * det(A) = 27 * (-5) = -125.

det(A^T): The determinant of a matrix remains the same when taking its transpose. Hence, det(A^T) = det(A) = -5.

det(B^-1): The determinant of the inverse of a matrix is the reciprocal of the determinant of the original matrix. Thus, det(B^-1) = 1/det(B) = 1/9.

det(B^4): The determinant of a matrix raised to a power is equal to the determinant of the original matrix raised to the same power. Therefore, det(B^4) = (det(B))^4 = (9)^4 = 6561.

These determinants can be useful in understanding the properties and transformations of matrices in various mathematical and scientific applications.

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If the null hypothesis is true, we would expect approximately 156 of the 5200 test results to be statistically significant by chance alone.

If the null hypothesis is true, and we perform 5200 significance tests at a significance level of 3%, we can expect that 3% of these tests would result in statistically significant results by chance alone.

To calculate the expected number of statistically significant results, we can multiply the total number of tests (5200) by the significance level (3%).

Expected number of statistically significant results = 5200 * 0.03

Calculating this, we have:

Expected number of statistically significant results = 156

Therefore, if the null hypothesis is true, we would expect approximately 156 of the 5200 test results to be statistically significant by chance alone.

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Answer:

Correct answer is option D

The probability of the independent events described, which involves randomly selecting a blue marble and then randomly selecting another blue marble from a bag containing 3 blue marbles and 2 yellow marbles, can be calculated using the multiplication rule of probability.

The probability of an event is calculated by dividing the number of favorable outcomes by the total number of possible outcomes. In this case, the first event involves randomly selecting a blue marble. Since there are 3 blue marbles out of a total of 5 marbles, the probability of selecting a blue marble in the first event is 3/5.

For the second event, after the first blue marble has been selected, there are now 4 marbles remaining in the bag, with 2 blue marbles and 2 yellow marbles. Therefore, the probability of selecting another blue marble in the second event is 2/4.

According to the multiplication rule of probability, the probability of two independent events occurring is found by multiplying the probabilities of each individual event. Hence, the probability of randomly selecting a blue marble and then randomly selecting another blue marble is (3/5) * (2/4) = 6/20 = 0.3.

Therefore, the probability of the independent events described is 0.3.

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Answer:

i think -0.02

Step-by-step explanation:

Answer:

-2.0

Step-by-step explanation:

The number of adult tickets that were sold would be = 435 tickets.

A ticket is an official document that gives an individual access to an event.

The cost of adult tickets = $8

The cost for student tickets = $4

The number of students tickets sold = X

The number of adults tickets sold = X +30

The told number of tickets sold = 840

To find X;

X + X + 30 = 840

2x + 30 = 840

2x = 840-30

2x = 810

X = 810/2

X = 405

Therefore, the number of tickets sold for adults = 405 +30 = 435 tickets.

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The standard deviation of Sampling distribution #1 is approximately 1.414. The standard deviation of Sampling distribution #2 is 0.5.

A) For Sampling distribution #1, which is created from the sample means of all possible random samples of size N = 8 from a population distribution with a mean (µ) = 50 and standard deviation (sigma) = 4, we can find the standard deviation of the sampling distribution using the formula:

Standard deviation of sampling distribution = sigma / sqrt(N)
= 4 / sqrt(8)
= 4 / 2.828
≈ 1.414

So, the standard deviation of Sampling distribution #1 is approximately 1.414.

B) For Sampling distribution #2, which is created from the sample means of all possible random samples of size N = 64 from the same population distribution, we can use the same formula:

Standard deviation of sampling distribution = sigma / sqrt(N)
= 4 / sqrt(64)
= 4 / 8
= 0.5

The standard deviation of Sampling distribution #2 is 0.5.

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A) The standard deviation of sampling distribution #1 is 1.41.

B) The standard deviation of sampling distribution #2 is 0.5.

To calculate the standard deviation of a sampling distribution, we use the formula σ/√N, where σ is the standard deviation of the population and N is the sample size. In this case, the population has a normal distribution with mean µ = 50 and standard deviation σ = 4. Therefore, we can calculate the standard deviation of the two sampling distributions by plugging in the appropriate values for N.

1) σ/√N = 4/√8

≈ 1.41.

2) σ/√N = 4/√64

= 0.5.

The standard deviation of sampling distribution #1 is the square root of the population variance divided by the sample size, while the standard deviation of sampling distribution #2 is also the square root of the population variance divided by the sample size. As expected, the standard deviation of sampling distribution #2 is smaller than that of sampling distribution #1, due to the larger sample size.

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