Alan wants to earn at least $73 trimming trees. He charges $7 per hour and pays $4 in equipment fees. What are the possible numbers of hours Alan could trim
trees?
Use t for the number of hours.
Write your answer as an inequality solved for t.

a) The mean and the standard deviation of the proportion of 50 randomly-selected songs that are Beatles songs are given as follows:

b) The probability that more than 30% of the 50 songs are Beatles songs is given as follows: 0.2594 = 25.94%.

c) The mean and the standard deviation of the proportion of 40 randomly-selected songs that are Beatles songs are given as follows:

The z-score of a measure X of a variable that has mean symbolized by [tex]\mu[/tex] and standard deviation symbolized by [tex]\sigma[/tex] is obtained by the rule presented as follows:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

For item a, the sample size and the proportion are given as follows:

n = 50, p = 0.26.

Hence the mean and the standard error are given as follows:

(using the third bullet point, about the Central Limit Theorem).

The probability that the proportion is above 30% is one subtracted by the p-value of Z when X = 0.3, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

By the Central Limit Theorem:

[tex]Z = \frac{X - \mu}{s}[/tex]

Z = (0.3 - 0.26)/0.062

Z = 0.645.

Z = 0.645 has a p-value of 0.7406.

(halfway between Z = 0.64 and Z = 0.65 on the z-table appended at the end of the answer).

1 - 0.7406 = 0.2594 = 25.94%.

For item c, the sample size and the proportion are given as follows:

n = 40, p = 0.33.

Hence the mean and the standard error are given as follows:

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Answer: 26.7

Step-by-step explanation:

[tex]\frac{9.2}{v}=\tan 19^{\circ}\\\\\frac{v}{9.2}=\frac{1}{\tan 19^{\circ}}\\\\v=\frac{9.2}{\tan 19^{\circ}}\\\\v \approx 26.7[/tex]

Answer: The given equation is 9.2/v = tan(19). To solve for v, we can first multiply both sides of the equation by v to get rid of the denominator on the left side. This gives us 9.2 = v * tan(19).

Next, we can divide 9.2 by tan(19) to find the value of v. The value of tan(19) is approximately 0.3420201, so 9.2 / 0.3420201 = 26.884956 (rounded to 1 decimal place).

So the value of v in the equation is approximately 26.9 (to 1 decimal place).

Step-by-step explanation:

P2, P3, P1 is a safe sequence according to the banker's algorithm.

The banker's algorithm gets its name from the fact that it determines whether or not a person should be granted a loan amount in order to assist the bank system in securely simulating resource allocation. In this part, we'll go through the Banker's Algorithm in depth. The Banker's Algorithm is primarily used in the banking system to avoid stalemate. It assists you in determining whether or not a loan will be granted. This procedure is used to assess the allocation for securely replicating the maximum amount available for all resources.

Here,

According to the banker's algorithm, the sequence P2, P3, P1 is secure.

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Answer:

no abla espanol

Step-by-step explanation:

7 white pairs coincide when upper half is folded over the centerline.

What is triangle ?

A triangle is a three-sided polygon that has three straight sides and three angles. The sum of the angles in a triangle is always 180 degrees. Triangles are classified based on their side lengths or angle measures.

We know that each half of the figure is composed of 3 red triangles, 5 blue triangles and 8 white triangles.

When the upper half is folded down over the centerline, 2 pairs of red triangles coincide, as do 3 pairs of blue triangles. there are 2 red-white pairs.

So, 2 red triangles + 3 blue triangles + 2 red-white pairs = 7 pairs of triangles that coincide

The total number of triangles in each half of the figure is 3 red triangles + 5 blue triangles + 8 white triangles = 16

If 7 pairs of triangles coincide, then 16 - 7 = 9 pairs do not coincide.

And since 2 red-white pairs coincide, then the remaining 9 - 2 = 7 pairs must be white pairs.

So 7 white pairs coincide when upper half is folded over the centerline.

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suppose the average number of hours worked per week for high-school aged teens in the united states is 17 hours per week with a standard deviation of 4 hours. So, the number of people selected from the public for a research is known as a sample.

Data dispersion in regard to the mean is quantified by a standard deviation, or "σ". Data are said to be more closely grouped around the mean when the standard deviation is low and more dispersed when the standard deviation is high.

Because it makes measures easier to comprehend when the data is spread, standard deviation is significant. The data's standard deviation will increase as the data's distribution becomes more widely scattered. The deviation of each observed value from the mean is measured using this metric. The majority of data in any distribution will fall within a 2 standard deviation range of the mean.

For the given details the correct matching will be:

Parameter - 17 hrs per week

Population - All high-school-aged teens in the US

Statistic - 14.4 hours per week

Sample - 15 students

Population is everything that is taken into account for an experiment since parameters reflect population characteristics and statistics state sample parameters.

The number of people selected from the public for a research is known as a sample.

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Answer:

(a) There are 2 groups. The treatment group will hear older students describe overcoming challenges. The control group won't hear anything.

Label each student with a different integer from 01 to 40. Go to a line in Table D and read two-digit groups moving from left to right. The first 20 different labels between 01 and 40 identify the 20 students who hear older students talking. The remaining 20 students don't hear anything. Ignore groups of digits from 41 to 00.

(b) Separate the 40 freshmen into 2 groups according to their history of academic performance. Carry out treatment separately in each block to account for the variation due to the history of academic performance.

Step-by-step explanation:

(a) We want to infer the cause and effect between hearing older students talking about their challenges and the students' academic performance.

Claim the 2 groups first;

Clarify the random assignment of people.

(b) The differences between the two kinds of students are expected to affect the response to the treatments in some ways. Randomized block designs are to eliminate the effect.

The measure of [tex]$\angle CAB = 180^{\circ} - \angle ACD$[/tex]

What is the circumscribed circle?

A circumscribed circle is a circle that is drawn around a polygon such that the circle touches all the vertices of the polygon. In other words, the vertices of the polygon lie on the circumference of the circle.

Given that a circle is circumscribed around a quadrilateral ABCD, it is clear that the circle passes through all four vertices of the quadrilateral, A, B, C and, D. Also, the diameter of the circle is the diagonal AC of the quadrilateral.

The angles formed by the diameter with the tangents from the non-adjacent vertices are supplementary. That is [tex]$\angle CAB + \angle ACD = 180^{\circ}$[/tex]

Therefore, the measure of [tex]$\angle CAB = 180^{\circ} - \angle ACD$[/tex]

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The right answer is: Z requires that you know the population standard deviation, which can be erroneous.

The standard deviation calculates how much the data vary from the mean value. The mean of the following two numbers, for instance, is the same: 15, 15, 15, 14, 16 and 2, 7, 14, 22, 30. But the second is obviously more dispersed. It expresses the deviation of each observed value from the mean.

given

Both distributions must meet a number of requirements in order to be used. The prerequisites that must be met in order to execute a hypothesis test for employing a z-distribution are: The population has a normal distribution. We are aware of the population standard deviation.

The scope of the sample is broad.

The prerequisites that must be met in order to conduct a hypothesis test for employing a t-distribution are:

The population has a normal distribution. The chosen sample was chosen at random.

Use the t-distribution to conduct the test for the population mean in cases where the population standard deviation is unknown and the sample standard deviation must be computed.

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The required solution of the given simultaneous equation is x = 5 and y = -9.

Simultaneous linear equations are two- or three-variable linear equations that can be solved together to arrive at a common solution.

here,
Given a system of equations,
6x + 5y = -15 - - - - -(1)
-4x - y = -11 - - - - (2)

Multiply equation 1 by 1 and multiply equaiton 2 by 5 then add both the equation,
6x + 5y -20x -5y = -15 -55
-14x = -70
x = 5

Now,
-4(5) - y = -11
-20 - y = -11
-y = -11 +20
y = -9

Thus, the required solution of the given simultaneous equation is x = 5 and y = -9.

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According to the formula of area of rectangle, the smallest perimeter possible to enclose this area is 60 and the length is 24 and the breadth is 6.

The general formula to calculate the area of rectangle is written as

A = l x b

And the perimeter of rectangle is written as.

P = 2(l + b)

Where l refers the length of the rectangle and b refers the breadth of the rectangle.

Here we know that the four-sided rectangular pen with an area of 144 square feet.

So, here we have to substitute the value of the formula, then we get,

=> l x b = 144

=> b = 144/l --------------------(1).

Here we have to substitute this one on the perimeter then we get,

=> 2(l + b) = 30

=> 2(144/l + l) = 30

=> 144/l + l = 15

=> l² - 15l + 144 = 0

When we factorize this one then we get the value of l as 24.

Then the value of the width is calculated as,

=> l = 144/ b

=> b = 144/24

=> 6

Then the perimeter us calculated as,

=> P = 2(24 + 6)

=> P = 60.

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The curvature of the curve r(t) = (9t, t², t³) at the point (9, 1, 1) is (3/ 800)√(91/ 94).

The curvature of a curve at a given point is a measure of how much the curve is bending at that point. In order to find the curvature of a curve, we need to first find the unit tangent vector, the unit normal vector, and the unit binormal vector at the point in question.

Given r(t) = (9t, t², t³) at the point (9, 1, 1). Thus t = 1 at (9, 1, 1).

The unit tangent vector at the point (9, 1, 1) is given by the derivative of r(t) with respect to t, evaluated at t = 1

r'(t) = (9, 2t, 3t²)

so T(t) = r'(1) = (9, 2, 3)

The magnitude of T(1) = √(9² + 2² + 3²) = √(94)

The unit tangent vector at (9, 1, 1) is T(1) = (9/√(94), 2/√(94), 3/√(94))

The unit normal vector, N(1), is given by the derivative of T(1) with respect to t, evaluated at t = 1

T'(t) = (0, 2, 6t)

T'(1) = (0, 2, 6)

The magnitude of T'(1) = √(0² + 2² + 6²) = √(40)

The unit normal vector at (9, 1, 1) is N(1) = (0, 2/√(40), 6/√(40))

The unit binormal vector, B(1), is given by the cross product of T(1) and N(1)

B(1) = T(1) × N(1)

= (18/√(40×94), 6/√(40×94), -54/√(40×94))

|B| = (3/2)√(91/ 235)

Finally, the curvature, k, at the point (9, 1, 1) is given by the magnitude of T'(1)

[tex]k = \frac{|B|}{|T|^3}[/tex]

k = (3/2)√(91/ 235)/ (√40)³ = (3/ 800)√(91/ 94)

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On solving the provided question, we can say that integral  =  [tex]\int\limits^a_b \,[/tex]t√9 + 16t² dt  =   [tex]\int\limits^a_b \,[/tex]√9 + 16t² d (9 + 16t²)

In mathematics, integrals translate integers into functions that express concepts like displacement, area, and volume that result from the combination of little facts. Integral discovery is a process that is referred to as integration. Integrals are mathematical constructs that, in calculus, have the same meaning as areas or generalized versions of areas. The main goal of calculus is to work with derivatives and integrals. Primitives and inverse derivatives are other terms for integral. Integration is essentially utilized to determine the area of 2D space and determine the volume of 3D objects. As a result, calculating an integral of a function with respect to x entails calculating the area between the curve and the x-axis.

integral

Curves, x = t³ or,

 = 3t²

y = t⁴ or,

  = 4t³  

Now, the line integral along C will be:

→  =  [tex]\int\limits^a_b \,[/tex]√(3t²)² + (4t³)² dt

            =  [tex]\int\limits^a_b \,[/tex]√9t⁴ + 16t⁶ dt

            =  [tex]\int\limits^a_b \,[/tex]√9 + 16t² dt

           =  [tex]\int\limits^a_b \,[/tex]√9 + 16t² dt

            =  [tex]\int\limits^a_b \,[/tex]t√9 + 16t² dt

            =   [tex]\int\limits^a_b \,[/tex]√9 + 16t² d (9 + 16t²)

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Answer:

8000

Step-by-step explanation:

bc if its 3 picnic its its 8000

Therefore , the required probability is therefore 1/151200, which is the answer to the probability problem.

The probability that a happening will happen or that the proposition is true is determined by a field of mathematics known as probability theory. A probability is a number between 0 and 1, where 1 represents certainty and 0 roughly represents the likelihood that an event will occur. A probability is a numerical expression of a certain event's likelihood or chance of happening. The percentages 0% - 100% and 0 to 1 can also be used to express probabilities. the percentage of times in an ideal collection of equally likely alternatives that an event occurs compared to all possible outcomes.

Here,

The six numbers can only be chosen in one way if the order chosen must match my phone number.

In 10P6 methods, six random digits from a possible total of ten can be chosen.

So the necessary probability is equal to 1/P. (10,6).

Alternative: Probability = 1/151200

The required probability is therefore 1/151200, which is the answer to the probability problem.

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Answer:

(- 4, - 2 ) and (- 1, 2 )

Step-by-step explanation:

to determine which ordered pairs make the equation true

substitute the x and y coordinates of each point into the left side of the equation and if  equal to the right side then it is a solution.

(3, - 1 )

4(3) - 3(- 1) = 12 + 3 = 15 ≠ - 10 ← not true

(- 4, - 2 )

4(- 4) - 3(- 2) = - 16 + 6 = - 10 ← true

(1, 4 )

4(1) - 3(4) = 4 - 12 = - 8 ≠ - 10 ← not true

(- 1, 2 )

4(- 1) - 3(2) = - 4 - 6 = - 10 ← true

The relationship between p(a), p(b) and p(a > b) is that p(a) + p(b) - p(a > b) = 1, meaning the probability of having at least one of the two types of cards is equal to the sum of the individual probabilities minus the probability of having both.

A. No, it could not be the case that p(a > b) = 0.5. This is because

p(a) + p(b) = 1,

so p(a > b) = 1 - p(a) - p(b)

= 1 - 0.6 - 0.4

= -0.1, which is not a valid probability.

B. The probability that the selected student has at least one of these two types of cards is

p(a) + p(b) - p(a > b)

= 0.6 + 0.4 - 0.3

= 0.7.

C. The probability that the selected student has neither type of card is 1 - (p(a) + p(b) - p(a > b))

= 1 - 0.7

= 0.3.

D. The relationships among p(a), p(b), and p(a > b) can be summarized by the equation p(a) + p(b) - p(a > b) = 1. This equation states that the probability of having atleast one type of card is equal to the sum of the probabilities of having a Visa card and a Mastercard minus the probability of having both types of card.

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The linear regression equation is given as follows:

y = -30x + 1048.8.

The estimate for the number of cases in 2026 is given as follows:

689 new cases.

The equation for the line of fit is obtained inserting the points of the data-set into a linear regression calculator.

(this is because there are multiple types of regression, such as logistic, exponential and quadratic regression).

The points for this problem are given as follows:

(0, 1047), (1, 1020), (2, 989), (3,943), (4,964), (5,880).

Inserting these points into a calculator, the regression equation is given as follows:

y = -30x + 1048.8.

2026 is 12 years after 2014, hence the estimate is calculated as follows:

y = -30(12) + 1048.8

y = 689 new cases.

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Answer:

Two billion, seven hundred forty million, two hundred fifty-three thousand, five hundred thirty-five is the right answer...

To find the domain and range, the function we simply solve the equation y=f(x) to determine the values of the independent variable x and obtain the domain.

Domain: In simple words, the domain is the set of values of x for which function f(x) is defined,  and also the set of values of x for which we can calculate the value of f(x)

Range: The range of function can define as the set of values of f(x) for the value of its domain

For finding the domain of any function f(x) ..find the value of all x for which function f(x) is defined

For finding the value of the range of function f(x), calculate the value of f(x) for all values of x in the set of domains of f(x)

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Therefore , the solution of the given problem of ratio comes out to be 2:3 for the following cylinder and sphere.

An order pair of values "a" and "b" can be expressed with the straightforward formula "a / b," with "b" must be no bigger than zero. A ratio is created by adding two ratios together. In the event when there was only one guy and three women, the proportion might be shown as 1:3. 1/4 of the group are guys, and 3/4 are girls. A part can be a statistic, a portion of a thing's volume, or a division among two or more things.

Here,

Here, a sphere is engraved within a cylinder of height h=2r.

Sphere volume =>

4/3πr³.

and Cylinder Volume =πr²h = πr²(2r) = πr³

Volume of the sphere divided by the volume of the cylinder is equal to or greater than

=>4πr³/ 3×2πr³

=>2:3

Therefore , the solution of the given problem of ratio comes out to be 2:3 for the following cylinder and sphere.

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The required distance from the base of the lighthouse to the sailboat is 11 feet.

Let x be the distance from the base of the lighthouse to the sailboat.

We know that the angle of depression is 6° and the height of the observer is 104 ft. We can use the tangent function to find the ratio of the opposite side (x) to the adjacent side (104 ft).

tan(6°) = x / 104

To find x, we can multiply both sides by 104:

x = 104 × tan(6°)

x = 104 × 0.10510

x = 10.9308

x ≈ 11

The value of x ≈ 11 is the distance from the base of the lighthouse to the sailboat.

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If Zack deposited $4,533 in an account earning 5.9% interest compounded annually. The amount he will have in 1 year is: $4,807.79.

Using this formula to find the compounded amount

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

Where:

A = Amount = ?

P = Principal = $4,533

R = Interest rate = 5.9% or 0.059

n = Number of months = 12

t = Time = 1 years

Let plug in the formula

A = $4,533 (1+ 0.059/12)^1×12

A = $4,533 (1+.004916)^12

A = $4,533 (1.004916)^12

A = $4,533 (1.0606)

A = $4,807.79

Therefore the amount he will have in 1 year is: $4,807.79.

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Answer:

6

Step-by-step explanation:

you have to count the 2d faces

Answer:

6 faces

Step-by-step explanation:

DCGH

BCDA

BCGF

ADHE

BFEA

FGHE

Answer:

The image attached

Step-by-step explanation:

Put the equation into slope-intercept form

[tex]y=mx+b[/tex]

The equation should look like this

[tex]y=-\frac{1}{4}x-2[/tex]

Graph the equation with the slope being  [tex]-\frac{1}{4}[/tex] and [tex]-2[/tex] being the y-intercept.

Nolan and his children went into a grocery store and he bought $9 worth of apples and bananas, The three ways are explained below

Generally, One way to determine the number of apples, x, and the number of bananas, y, that Nolan bought is to use the equation:

x + y = a (total number of apples and bananas)

0.75x + 0.5y = 9 (total cost of apples and bananas)

Another way is to use the equation:

x = y + 2 (number of apples is 2 more than the number of bananas) 0.75x + 0.5y = 9 (total cost of apples and bananas)

A third way is to use the equation

y = x - 2 (number of bananas is 2 less than the number of apples)

0.75x + 0.5(x-2) = 9 (total cost of apples and bananas)

You can then solve for x and y using either of the above equations.

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Answer:

3rd choice

a rotation of 90° counterclockwise about the origin and a translation down 1 unit

Step-by-step explanation:

This is just asking you what operations you need to perform to get figure N from figure M. Such a set of operations is called a transformation.

In this case we see that to get figure N we have to rotate figure M 90° in a counterclockwise direction. That would be the first transformation

From the choices you can eliminate the first two choices which deal only with clockwise rotation

Translation transformation is one where the figure is shifted horizontally or vertically

All we have to do is figure out if, after 90° counterclockwise rotation of M whether it was shifted 1 unit up or 1 unit down

Look at the point (-3, 1) in figure M.

When a figure is rotated 90° counterclockwise, each if its original coordinates (x, y) become new coordinates (-y, x)

In other words the coordinates are interchanged in the transformed figure and the sign of the new x-coordinate is changed from the original y value

So (-3, 1) should become (-1, -3)

But in figure N, that point has become (-1, -4) which is (-1, -3-1). This indicates the figure has been shifted down which corresponds to a translation down by 1 unit

Answer: 3rd choice

a rotation of 90° counterclockwise about the origin and a translation down 1 unit

The two images I have attached may help you understand better. First one is just the rotation of M. Second one is the rotated figure shifted down which results in figure N

Answer:

Hence, 1 divided by 2 is 0.5. So, the correct answer is “0.5”

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