what is the value of x?
A. 20
B. 24
C. 25
D. 30
E. 40​

Answer:

Using it's concept, it is found that there is a 8.3% probability of flipping a head AND rolling a 3.

Answer: 82

Step-by-step explanation:

               82

            35   47

       15     20     27

   7      8        12    15

2     5      3        9        6

puzzle two numbers add up to one above

2 numbers under a number add up to make that number

2+5=7

5+3=8 etc

Answer:

165!

Step-by-step explanation:

Answer:

The supplementary angle is 165°.

Step-by-step explanation:

A supplementary angle is such that when added to the original angle, the sum is 180°.So angle a + angle b = 180°So 15° + X = 180° Subtract 15° from both sides to get your answer.

The correct expression which can be used to find AC is,

⇒ 7.8 (cos 23°)

We have to given that;

A triangle ABC shown in figure.

Now, We can formulate;

cos 23° = AC / AB

cos 23° = AC / 7.8

AC = 7.8 (cos 23°)

Thus, The correct expression which can be used to find AC is,

⇒ 7.8 (cos 23°)

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If the sample is not truly representative, the conclusion may not accurately reflect the actual average age of all the students at the college.

Based on the given information, it can be concluded that the average age of all the students at City College is likely around 20. However, it's important to note that this conclusion is only valid if the sample of 90 students is representative of the entire student population at City College. If the sample is not truly representative, the conclusion may not accurately reflect the actual average age of all the students at the college.

The average age in a sample of 90 students at City College is 20. However, based on this sample alone, it cannot be conclusively determined that the average age of all the students at City College is also 20. This is because the sample may not be fully representative of the entire student population. More information or a larger sample would be needed to make a more accurate conclusion about the average age of all students at City College.

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If the sample of 90 students is representative of the entire student population at City College, then we can conclude that the average age of all students is approximately 20 years old.

Based on the given information, the average age in a sample of 90 students at City College is 20.

To determine if this sample can be used to conclude the average age of all students at City College, we need to consider these terms:
Sample:

A subset of a population, which in this case is the group of 90 students at City College.
Population:

The entire group of students at City College that we want to make a conclusion about.
Average (Mean) Age:

The sum of ages divided by the total number of students, in this case, 20 years.
Representativeness:

How well the sample reflects the characteristics of the entire population.
If the sample of 90 students is representative of the entire student population at City College, then we can conclude that the average age of all students is approximately 20 years old.

However, if the sample is not representative, the conclusion may not be accurate.

To make a more accurate conclusion, it is important to ensure that the sample is representative by using a larger sample size or random sampling methods.

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Answer: 102,400,000,000,000,000,000

Step-by-step explanation:

First do 20^10 = 10,240,000,000,000.  

Then, multiply 10,240,000,000,000 * 10,000,000 to get 102,400,000,000,000,000,000.

Hope it helps <3

Answer:

ur screwed but the answer is 110.88

Step-by-step explanation:

:)

Assuming the person's weight and magnitude, we can estimate their weight to be 491N.

A mathematical object's magnitude or size defines whether it is greater or smaller than other items of its kind.

In formal terms, an object's size can be thought of as the outward manifestation of an ordering—of the class of objects to which it belongs.

So, the person's weight will be:

The scale calculates the floor's usual upward force on the passenger.

The most force is produced when going up (when starting an upward trip or ending a downward trip).

The normal force is lowest when there is a downward acceleration.

Regarding any such situation

∑F y​ =ma y changes to +391Nmg = ma for halting and +591Nmg=+ma for starting. (Where a represents the size of the acceleration.)

Add these two simultaneous equations to eliminate a and determine mg:

+591N−mg+391N−mg=0

OR

982N–2mg=0

Fg​ = mg = 982N/2​ = 491N

Therefore, assuming the person's weight and magnitude, we can estimate their weight to be 491N.

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Complete question:

A person stands on a scale in an elevator. As the elevator starts, the scale has a constant reading of 591N. As the elevator later stops, the scale reading is 391N. Assuming the magnitude of the acceleration is the same during starting and stopping, determine the weight of the person.

False. One liter is not about an ounce, a pint, a quart, or a gallon. It is a metric unit of volume that is equivalent to approximately 33.8 fluid ounces, 2.1 pints, 1.06 quarts, or 0.26 gallons.

One liter is not about an ounce, a pint, a quart, or a gallon. It is a metric unit of volume that is equivalent to approximately 33.8 fluid ounces, 2.1 pints, 1.06 quarts, or 0.26 gallons.

The liter is a unit of measurement for volume that is part of the metric system. It is used in many countries around the world, including the United States, where it is often used in scientific and medical fields. One liter is defined as the volume of a cube that is 10 centimeters on each side.  In comparison to other common units of volume measurement, one liter is equivalent to approximately 33.8 fluid ounces. This means that if you have a container that holds one liter of liquid, it would also hold approximately 33.8 fluid ounces of liquid.  One liter is also equivalent to approximately 2.1 pints. This means that if you have a container that holds one liter of liquid, it would also hold approximately 2.1 pints of liquid.

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The alternative hypothesis will be 200β₂> -0.03.

The null hypothesis of the given statement will state that decreasing the total size by 200 square feet will not decrease the price by more than three percent. On the other hand, the alternative hypothesis lines up with the research prediction, which states that decreasing the total size by 200 square feet, will decrease the price by more than three percent. Here, the negative sign indicates a decrease in price.

Therefore, the correct answer is 200β₂> -0.03.

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Answer:

7) Right triangle

8) Acute

9) Right triangle

10) obtuse

Step-by-step explanation:

Answer:4, 0p0 to tons

Step-by-step explanation:because

Minimum cost in terms of material used:\(C = 4cπ(r^2 + rh) = 4c.\)

We can solve this problem using the method of optimization. Let's first identify the variables and constraints:

Variables:

r: the radius of the barrel

h: the height of the barrel

Constraints:

Volume constraint: \(πr^2h = 32π\)

Non-negative constraints: r ≥ 0, h ≥ 0

We want to minimize the cost of the material used, which consists of the cost for the side of the barrel and the cost for the top and bottom of the barrel. Let's denote these costs by Cs and Ctb, respectively.

To express Cs and Ctb in terms of r and h, we need to find the surface area of the side of the barrel and the surface area of the top and bottom of the barrel, respectively.

Surface area of the side of the barrel:

lateral area = 2πrh

Surface area of the top and bottom of the barrel:

top area = bottom area =\(πr^2\)

Therefore, the total surface area of the barrel is:

A = lateral area + 2(top area) =\(2πrh + 4πr^2\)

The cost of the material for the side of the barrel is half that of the cost for the top and bottom. Let's denote the cost per square foot of the top and bottom as Ct, then the cost per square foot of the side is Cs = 0.5Ct.

The total cost of the material used can now be expressed in terms of r and h as follows:

C = Cs(lateral area) + Ct(2 top area) = \(0.5Ct(2πrh) + Ct(4πr^2) = Ct(2πrh + 4πr^2)\)

Now, we need to express Ct in terms of Cs. Let's assume that the cost per square foot of the side is Cs = c, then the cost per square foot of the top and bottom is Ct = 2c.

Therefore, the total cost of the material used can be expressed as:

\(C(r, h) = 2c(2πrh + 4πr^2) = 4cπ(r^2 + rh)\)

Now, we can formulate the optimization problem as follows:

minimize \(C(r, h) = 4cπ(r^2 + rh)\)

subject to πr^2h = 32π

r ≥ 0, h ≥ 0

To solve this problem, we can use the method of Lagrange multipliers. The Lagrangian function is:

\(L(r, h, λ) = 4cπ(r^2 + rh) - λ(πr^2h - 32π)\)

Taking partial derivatives with respect to r, h, and λ, we get:

\(dL/dr = 8cπr + λπh = 0\)

\(dL/dh = 4cπr + λπr^2 = 0\)

\(dL/dλ = πr^2h - 32π = 0\)

Solving these equations simultaneously, we get:

\(r = (4/π)^(1/3)\)

h = 4r

\(λ = (2/π)^(2/3)/2\)

Therefore, the dimensions of the barrel that can be constructed at a minimum cost in terms of material used are:

\(r = (4/π)^(1/3)\)

\(h = 4r = 4(4/π)^(1/3)\)

To find the minimum cost, we need to substitute these values of r and h into the cost function:

\(C = 4cπ(r^2 + rh) = 4c\)

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Answer:

maybe the answer ris 36×4 and then 30×4 and subtract the result?!?!

Answer:

Step 1: Find the prime factorization of the number inside the radical.

Step 2: Determine the index of the radical. In this case, the index is two because it is a square root, which means we need two of a kind.

Step 3: Move each group of numbers or variables from inside the radical to outside the radical. In this case, the pair of 2’s and 3’s moved outside the radical.

Step 4: Simplify the expressions both inside and outside the radical by multiplying.

Step-by-step explanation:

The approximate amount of gallons used per person with the population of  2.34 x 10¹⁵ people is 2283 gallons.

We were given the  total amount of water used in a the town as 5.342 x 10¹⁸

We were also told that the total number of the people in that town is 2.34 x 10¹⁵ people.

Then we can determine the amount of gallons used per person by making the division of the total amount of the water used by the total number of the people in the town as :

( 5.342 x 10¹⁸)/(2.34 x 10¹⁵ )

= 2283 gallons.

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Answer:

75.35

Step-by-step explanation:

55 (1.37) = 75.35

Hi there!

The answer is →\(15 \sqrt{3}\)←

(Check the attached image for the explanation)

∑ Hey, sydneythresher ⊃

Answer:

 [E] The expression is simplified

Step-by-step explanation:

Given:

Choose the simplified form of the expression \(\mathrm{5x^4 + 6x^2 - 2x + x^3}\)

Missing Answer Choices:

Solve:

According to the question it given; \(\mathrm{5x^4 + 6x^2 - 2x + x^3}\)

From the given we can see that it is already simplified.

Therefore, the answer is [E] The expression is simplified.

xcookiex12

8/16/2022

The observed proportion of correct diagnoses in a random sample of mechanics is not necessarily the same as the MLE, as the MLE involves a more formal estimation procedure that considers the underlying probability distribution and maximizes the likelihood function based on the observed data.

The Maximum Likelihood Estimation (MLE) and the observed proportion of correct diagnoses in a random sample of mechanics are related concepts but not the same.

The MLE is a statistical method used to estimate the parameters of a probability distribution based on observed data. It seeks to find the parameter values that maximize the likelihood of observing the given data. In the case of a binomial distribution, which could be used to model the number of correct diagnoses, the parameter of interest is the probability of success (correct diagnosis) for each trial (mechanic).

In this context, if we have a random sample of 20 mechanics and observe that 15 of them made correct diagnoses, we can calculate the observed proportion of correct diagnoses as 15/20 = 0.75.

While the observed proportion can be considered an estimate of the underlying probability of success, it is not necessarily the same as the MLE. The MLE would involve maximizing the likelihood function, taking into account the specific assumptions and model chosen to represent the data. The MLE estimate may or may not coincide with the observed proportion, depending on the distributional assumptions and the specific form of the likelihood function.

In summary, the observed proportion of correct diagnoses in a random sample of mechanics is not necessarily the same as the MLE, as the MLE involves a more formal estimation procedure that considers the underlying probability distribution and maximizes the likelihood function based on the observed data.

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Answer: y+7 = 3(x-5) A

Step-by-step explanation: Plug in the points into y-y1= m(x-b)

Answer:

B. 4(2+5)

Step-by-step explanation:

4 * 2 = 8

4 * 5 = 20

Add the equation in and you get 8+20

Answer:

B

Step-by-step explanation:

4(5+2)

add the brackets.

4(7)

multiply

=28

(8+ 20 also equals 28)

The lowest test score that still qualifies for a scholarship is 632.

To discover the lowest test score that still qualifies for a scholarship, we will use the NORM.INV feature in Excel. This feature returns the inverse of the usual everyday cumulative distribution feature, which can be used to discover the score that corresponds to a given percentile.

The percentile we are interested by is the top 5%, which corresponds to a cumulative possibility of 0.95. we are able to use the formula:

NORM.INV(0.95, 600, 85)

Wherein 0.95 is the probability, 600 is the mean, and 85 is the standard deviation.

Evaluating these component in Excel offers us:

632.39

Rounding to the closest integer, we get:

632

Consequently, the test score which is lowest but still qualifies for a scholarship is 632.

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The number of trees more than 10m tall but not more than 20m tall is 18 trees.

0 < h ≤ 5 = 5

height greater than 0m less than or equal to 5m

5 < h ≤ 10 = 9

height greater than 5m less than or equal to 10m

10 < h ≤ 15 = 13

height greater than 10m less than or equal to 15m

15 < h ≤ 20 = 5

height greater than 15m less than or equal to 20m

20 < h ≤ 25 = 1

height greater than 20m less than or equal to 25m

The number of trees that are more than 10m tall but not more than 20m tall are;

10 < h ≤ 15 = 13

15 < h ≤ 20 = 5

So,

13 + 5 = 18 trees

Therefore, the total number of trees which are 10m tall but not more than 20m tall is 18 trees.

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a) Contribution (objective value) = $132.14

b) The firm earns $132.14 at the optimal solution.

c) An additional hour of time available for the third machine is worth $0.14 to the firm.

d) An additional 5 hours of time available for the second machine will increase the objective value by $3.69.

The best result obtained from using computer software to solve the LP problem is: X1 = 11.43, X2 = 12.86, X3 = 5.71

b) The number of unused hours at the ideal solution is:

Machine 1 still has 8.57 hours of time left.

There are no hours left on Machine 2 at the moment.

There are still 94.29 hours left on Machine 3.

c) The shadow price of the third limitation is worth an extra hour of time available for the third machine. With the exception of increasing the right-hand side of the third constraint by one unit, we can solve the LP problem using the same constraints to determine the shadow price. Using LP to solve this issue, we discover that the shadow price for the third constraint is

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Answer:

26miles

Step-by-step explanation:

Let Nina's husband's (Ed) mileage = x miles

Nina = (x + 6) miles

Combined mileage = 46

Nina's miles + Ed's miles = 46

x + (x+6) = 46

x+x+6 = 46

2x +6 = 46

2x = 46-6

2x = 40

x = 40/2 = 20miles

Nina's husband covered 20miles

Nina covered = x+6 = 20+6 = 26miles

Nina walked 26miles

Answer:

subtraction is the right answer

Answer:

hi seif

i think its subtraction

Answer:

11/20

Step-by-step explanation:

1,10,11,12,13,14,15,16,17,18,19 All have the number "1"

there are 11 of them so 11/20 have the digit 1.

:)

Answer:

To find the fraction of the numbers from 1 to 20 that contain the digit 1, we can count the number of such numbers and divide by the total number of numbers from 1 to 20.

The numbers from 1 to 20 are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20.

The numbers that contain the digit 1 are: 1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19.

Therefore, there are 11 numbers from 1 to 20 that contain the digit 1.

The fraction of the numbers from 1 to 20 that contain the digit 1 is:

fraction = number of numbers containing 1 / total number of numbers

fraction = 11 / 20

So, the fraction of the numbers from 1 to 20 that contain the digit 1 is 11/20 or 0.55.

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