Please help! What are the answers for these 3?

Answer:

44

Step-by-step explanation:

4+8(5)

Multiply 8 by 5

4+40=44

Add 4 to the product (40) to get the final answer of 44

Remember PEMDAS

Answer: 82

Step-by-step explanation:

The probability of drawing a red 7 and black face card is P ( A ) = 1/221

Given data ,

Let the probability of drawing a red 7 and black face card be P ( A )

Now , the compound probability is given by\

The number of red 7 cards = ( red of diamonds 7 + red of hearts 7 )

Probability of drawing a red 7 = 2/52

Now , the card is not replaced , so the total number of remaining cards = 51

And , number of black face cards = 6

Probability of drawing a black face card = 6/51

So , P ( A ) = 2/52 ( 6/51 )

P ( A ) = 12 / 2652

On simplifying , we get

P ( A ) = 1/221

Hence , the probability is P ( A ) = 1/221

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Answer:

The question has the answer in it.. Maddy's speed.. which is 3 MPH :/ but... if you need to find the thing that isn't known... Maddy's time.. here is how..

Step-by-step explanation:

Max takes 3 hours at 2 mph.. soo 3x2=6 miles that max traveled

Maddy runs at 3 mph  so .. 6 miles / 3MPH  =2 hours,  Maddy takes 2 hours

The set of natural numbers {1,2,3,4,...} and the set of positive even numbers {2, 4, 6, 8, . . .} are different because natural numbers include all positive integers, while even numbers only include those that are divisible by 2 with no remainder.

Two important sets of numbers are natural numbers and even numbers. The set of natural numbers consists of numbers that are not negative, beginning with 1 and continuing indefinitely with 2, 3, 4, and so on.

The set of even numbers, on the other hand, consists of numbers that are divisible by 2, beginning with 2, 4, 6, and so on.

Positive integers refer to natural numbers. Any integer greater than zero is a positive integer.

Zero is not a positive integer. Hence, the set of natural numbers consists of {1,2,3,4,…}

On the other hand, the set of even numbers consists of {2, 4, 6, 8, . . .}.

Therefore, {1,2,3,4,…} and {2, 4, 6, 8, . . .} are two different sets of numbers where one set is composed of positive integers (natural numbers) and the other is composed of positive even numbers.

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Answer: Fadil is wrong because the point shown in the graph is actually (5, 7) (x-intercept is 5 & y-intercept is 7)

Step-by-step explanation:

I think it’s pretty self explanatory ⬆️

Answer:

The ( X,Y ) cordanites are backwards, The 7 and 5 should be switched.

Step-by-step explanation:

Answer:

4n - 4

Step-by-step explanation:

3n-4 = the amount of tickets Evie has

n = the amount of tickets Mark has

3n - 4 + n = 4n - 4

We will investigate the translation transformation applied on a figure defined on a cartesian coordinate grid.

Translation transformation deals with the displacement of the primary vertices of a figure like a square JKLM with certain number off units in horizontal and/or vertical direction.

We will investigate the type of translations that are possible as follows:

Where,

AND,

We will investigate how to use the above rule to determine the image of the square JKLM.

We will translate each vertex 5 units left and 6 units down! We will assign the constants a value according to the translation units:

The general rule that will be applied to the vertices of the square JKLM:

The four coordinate of the square are:

Applying the general rule to determine the image of all vertices:

The image of the square JKLM is as follows:

We can plot these images on the grid as follows:

Answer:

1 and 2 are linear functions.

Step-by-step explanation:

Answer:

The most logical explanation should be D if it's starting about the black one but if it's the blue one then it would be A.

The value of x is 120° .

Given,

In triangle HGF,

HF and FG and are equal in length and ∠G is 60° .

Now,

If the sides are equal there angles will be equal.

So,

FG and FH are equal thus angle ∠H will be equal to 60° .

Sum of all the interior angles of triangle is 180° . Thus ∠F will be equal to 60° .

Now,

∠H and x° will form linear pair.

∠H + x°  = 180°

x = 120° .

Hence all the angles of the triangle are obtained.

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Answer:16

Step-by-step explanation:

The value of the given integral is  4√(3)/3 .

To evaluate the integral, we can use iterated integration.

Let's start with the inner integral,

∫ x² dy                           Having limit √(1 - x²) to 0

We can integrate this using the fundamental theorem of calculus,

∫ x² dy                           Having limit √(1 - x²) to 0

= yx²                              Having limit √(1 - x²) to 0

= -x²√(1 - x²)

Now, substitute this back into the original integral:

⇒ ∫-x²√(1 - x²)dx            Having limit  -1 to 1

We can use integration by parts to solve this integral,

Let u = -x² and dv = √(1 - x²) dx

Then du/dx = -2x and v = (1/2)(x√(1 - x²)+ asin(x))

Using the integration by parts formula, we get:

⇒ ∫ of -x²√(1 - x²)dx              having limit -1 to 1

⇒ (-x²) (1/2) (x√(1 - x²) + asin(x)) | limit from -1 to 1 - ∫ limit from - 1 to 1 of (1/2) (x√(1 - x²) + asin(x)) (-2x) dx

Simplifying, we get,

= (-1/2) (0 + asin(1) - (0 + asin(-1))) + 2 ∫ from -1 to 1 of x²√(1 - x²) dx

The first term is zero, and the second term is the integral we previously solved.

So, we have,

= 2 (-x²√(1 - x²))  limit from -1 to 1

= 4√(3)/3

Therefore, the value of the integral is 4√(3)/3

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Answer:

k = 5

Step-by-step explanation:

-2k = k - 7 - 8

Combine like terms

-2k = k - 15

add 15 to both sides

-2k + 15 = k

Add 2k to both sides

15 = 3k

Divide both sides by 3

k=5

Hope this helps!

Answer: like 36 i think

Step-by-step explanation:

Answer:

14168

Step-by-step explanation: just multiple

The length of the ribbon to the nearest tenth is 50.3 inches.

To find the length of the ribbon that surrounds the edge of a circular hat that has a radius of 8 inches, we can use the formula for the circumference of a circle.

The formula for the circumference of a circle is given by the following:

C = 2πr

Where C represents the circumference of the circle, π represents the constant value of pi which is approximately equal to 3.14, and r represents the radius of the circle.

Given that the circular hat has a radius of 8 inches, we can use this value to find the circumference of the circle.

Hence, we have: r = 8 inches

C = 2πr

C = 2π(8)C = 16π

The length of the ribbon that surrounds the edge of the circular hat is equal to the circumference of the circle. Therefore, the length of the ribbon is:16π ≈ 50.3 inches (to the nearest tenth)

Therefore, the length of the ribbon to the nearest tenth is 50.3 inches.

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The statistical strategy that would allow the professor to determine if the average score on the final exam has gone higher is a hypothesis test. The professor can formulate a null hypothesis (H0) that the average score is still 83 and an alternative hypothesis (Ha) that the average score is greater than 83. Then the professor can collect a sample of final exam scores and calculate the sample mean.

The professor can use the sample mean and standard deviation to calculate a test statistic, which can be compared to a critical value or p-value to determine if the null hypothesis should be rejected or not.

Hypothesis testing is a commonly used statistical method to make decisions about a population based on a sample. In this case, the professor wants to determine if the average score on the final exam has increased or not. By setting up a hypothesis test, the professor can use the sample data to make an inference about the population. The null hypothesis assumes that there is no difference between the population mean and the previous average score of 83.

The alternative hypothesis assumes that the population mean has increased. By calculating a test statistic and comparing it to a critical value or p-value, the professor can make a decision to either reject or fail to reject the null hypothesis. If the null hypothesis is rejected, the professor can conclude that there is evidence to support the claim that the average score on the final exam has increased.

In the past, students have scored an average of 83 points on the final exam in a statistics course. The professor thinks that this average has now gone higher. What statistical strategy would allow the professor to determine if he is correct? Confidence interval Regression analysis Empirical rule Hypothesis test

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The statistical strategy that would allow the professor to determine if the average score on the final exam has gone higher is a hypothesis test. The professor can formulate a null hypothesis (H0) that the average score is still 83 and an alternative hypothesis (Ha) that the average score is greater than 83. Then the professor can collect a sample of final exam scores and calculate the sample mean.

The professor can use the sample mean and standard deviation to calculate a test statistic, which can be compared to a critical value or p-value to determine if the null hypothesis should be rejected or not.

Hypothesis testing is a commonly used statistical method to make decisions about a population based on a sample. In this case, the professor wants to determine if the average score on the final exam has increased or not. By setting up a hypothesis test, the professor can use the sample data to make an inference about the population. The null hypothesis assumes that there is no difference between the population mean and the previous average score of 83.

The alternative hypothesis assumes that the population mean has increased. By calculating a test statistic and comparing it to a critical value or p-value, the professor can make a decision to either reject or fail to reject the null hypothesis. If the null hypothesis is rejected, the professor can conclude that there is evidence to support the claim that the average score on the final exam has increased.

In the past, students have scored an average of 83 points on the final exam in a statistics course. The professor thinks that this average has now gone higher. What statistical strategy would allow the professor to determine if he is correct? Confidence interval Regression analysis Empirical rule Hypothesis test

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The formula for calculating the work required to lift an object against gravity is given by;W = mghWhere W is the work required, m is the mass of the object, g is the gravitational constant, and h is the height lifted.

For the solid rectangular box, the volume is given by;

\(V = lwh\)

Where l is the length, w is the width, and h is the height.The base is square,

so\(l = w = 4 m\)

Therefore,

\(V = lwh\\ = 4 × 4 × 4 \\= 64 m³\)

The mass of the box is given by;

\(ρ = m/V\\⇒ m = ρV = 400 × 64\\ = 25600\)

kg

The height lifted is 4 mThus, the work done against gravity is given by;\(W = mgh\\= 25600 × 9.8 × 4\\\\= 1003520 J\)

The required work is 1003520 JFor the solid cylinder, the volume is given by;

\(V = πr²h\)

where r is the radius of the base, h is the height of the cylinder Given;\(r = 1.5 mh = 6 \\Therefore,\\V = πr²h\\ = π(1.5)² × 6=\\ 42.4115 m³\)

The mass of the cylinder is given by;

\(ρ = m/V\\⇒ m = ρV \\= 400 × 42.4115\\ = 16964.6\) kg

The height lifted is 6 mThus, the work done against gravity is given by;\(W = mgh\\= 16964.6 × 9.8 × 6\\= 997929.36 J\)

(to 2 decimal places)The required work is 997929.36 J.

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Step-by-step explanation:

2.5m is the answer god bless you make me bfai list

The required height would be 2 meters in the given cylinder.

A cylinder's surface area is defined as the amount of specific relevance by the horizontal plane of the cylinder's bases and the curved surface of the cylinder. The overall surface area of the cylinder includes the area of the cylinder's two circular bases as well as the area of the curving surface.

The surface area of the cylinder is: A = 2πr(r+h)

where 'r' is the radius of the base (circle) of the cylinder

'h' is the height of the cylinder

The surface area of a cylinder is 50.24 m² and its radius is 2 m.

⇒ A = 2πr(r+h)

Here A = 50.24 m² and r = 2 m

⇒ 50.24 = 2(3.14)(2)(2+h)

⇒ 50.24 = (12.56)(2+h)

⇒ 50.24 /(12.56) = (2+h)

⇒ 4 - 2 = h

Therefore, the required height would be 2 meters in the given cylinder.

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The question seems to be incomplete the correct question would be

The surface area of a cylinder is 50.24 m² and its radius is 2 m. What could its height be?

The centroid of the region enclosed by y = ex, y = 0, x = 0 and x = 5 is at the point ( (5e^5 - 5) / (e^5 - 1) , (e^10 - 1) / 2(e^5 - 1) ).

To find the centroid of a region, we need to first find the area of the region and the coordinates of the center of mass of the region.

The region enclosed by y = e^x, y = 0, x = 0 and x = 5 can be represented by the definite integral of the function y = ex between the limits of x = 0 and x = 5. The area of this region is given by the definite integral:

∫[0,5] e^x dx

The definite integral of ex is e^x, so the area of the region is e^5 - e^0 = e^5 - 1.

To find the x-coordinate of the centroid, we need to find the integral of

x e^x from 0 to 5, divided by the area.

= ∫[0,5] xe^x dx / (e^5 - 1)

The integral of xe^x is

= (xe^x - ∫e^x dx)

= (xe^x - e^x)

So the x-coordinate of the centroid is

= ∫[0,5] xe^x dx / (e^5 - 1)

= (4e^5 + 1) / (e^5 - 1)

To find the y-coordinate of the centroid we need to find the integral of

ye^x from 0 to 5, divided by the area.

∫[0,5] (e^x * e^x) dx / (e^5 - 1)

∫[0,5] (e^(2x)) dx / (e^5 - 1)

The integral of e^(2x) is (1/2)e^(2x)

So the y-coordinate of the centroid is

∫[0,5] e^(2x) dx / (e^5 - 1) = (1/2) * (e^10 - e^0) / (e^5 - 1)

= (1/2) * (e^10 - 1) / (e^5 - 1)

= (e^10 - 1) / 2(e^5 - 1)

So the centroid of the region enclosed by y = ex, y = 0, x = 0 and x = 5 is at the point ( (5e^5 - 5) / (e^5 - 1) , (e^10 - 1) / 2(e^5 - 1) ).

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Answer:

It takes the car 24 minutes to travel 26 miles at this speed.

Step-by-step explanation:

To be able to find how long it takes the car to travel 26 miles at this speed, you have to replace the distance in the formula which is 26 miles and solve for t:

d=65t

26=65t

t=26/65

t=0.4

According to this, it takes the car 0.4 hours to travel 26 miles at this speed and to be able to provide the answer in minutes, you can use a rule of three given that 1 hour is equal to 60 minutes:

    1 hour       →   60 minutes

0.4 hours      →           x

x=(0.4*60)/1= 24 minutes

The answer is that it takes the car 24 minutes to travel 26 miles at this speed.

The factor that does NOT control the stability of a slope is the angle of repose for intact bedrock. The angle of repose refers to the steepest angle at which a pile of loose material remains stable without sliding. It is mainly applicable to loose materials like soil and granular substances, not intact bedrock.

Bedrock stability depends on factors such as its strength, fracturing, and geological properties, rather than the angle of repose. Factors that control the stability of a slope include whether the slope is rock or soil. Rock slopes tend to be more stable than soil slopes due to the cohesive nature of intact rock.

The amount of water in the soil also affects slope stability, as excessive water can increase pore pressure and reduce the shear strength of the soil, leading to slope failure. Additionally, the orientation of fractures, cleavage, and bedding in the rock can influence slope stability by creating planes of weakness or strength.

To summarize, while the angle of repose is a significant factor in slope stability, it is not applicable to intact bedrock. The stability of a slope is influenced by the type of material (rock or soil), the presence of water, and the orientation of fractures and bedding.

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Answer:

look at the photo i have sent

The likelihood that the sample mean time required to finish the exam will be less than 47.5 minutes is 0.566.

Given;

The average amount of time needed to finish an exam is 45 minutes, with a standard deviation of 15 minutes. The average amount of time required for 100 randomly chosen pupils is calculated.

Mean (μ) = 45

Standard deviation (σ) = 15

Here, σ/√n = 15/√100

                   = 1.5

To get the probability the sample mean time necessary to complete the examination is less than 47.5 minutes, we need;

P (x < 47.5) = P(z < (x-μ /σ/√n ) )

                  = P(z < 47.5 - 45/1.5)

                  = P(z < 17.5)

                  = 0.566

The probability the sample mean time necessary to complete the examination is less than 47.5 minutes is 0.566

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Answer:

the answer is c

Step-by-step explanation:

4,200-725+215+375=4,065

Jackson's net pay after all deductions is $2,885.

Here,

Jackson received a paycheck with a salary of $4,200.

The check included a deduction of $725 for taxes, $215 in benefits paid by the employee and $375 in employer - paid benefits.

What is Net pay?

Net pay is the amount one receives after taxes and deductions have been withheld during a pay period.

Now,

Total deduction = $725 + $215 + $375 = $1,315

Hence, Net pay after all deductions = $ 4,200 - $1,315

                                                       = $ 2,885

So, Jackson's net pay after all deductions is $2,885.

Hence, Option b is true.

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Answer:

y=-1x+-1

Step-by-step explanation:

the line is on the -1 on the x axis and the y axis

Based on the properties of rectangles, the angles and the side lengths are KN = 11 and NLK = 32

From the question, we have the following parameters that can be used in our computation:

JN = 2x + 7, LN = 6x - 1

NKJ = 58 degrees

The diagonals or a rectangle are equal

So, we have

2x + 7 = 6x - 1

Evaluate the like terms

4x = 8

Divide

x = 2

So, we have

KN = 2 * 2 + 7

KN = 11

Adjacent angles in this case add up to 90 degrees

This gives

NLK = 90 - 58

Evaluate

NLK = 32

Hence, the measure of the angle is 32 degrees

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