the chance that a certain type of thumbtack lands point up when you toss it in the air is 80%. this makes the standard deviation of the proportion of times it lands point up out of 100 tosses equal to?

Answer:

x=11

Step-by-step explanation:

2x+1=5x-32   ==>   since the two triangles are congruent, their angle measures are congruent as well.

2x-2x+1=5x-2x-32

1=3x-32

1+32=3x-32+32

33=3x

x=11

To draw a normal curve for the distribution of sunflower heights, first draw a horizontal line across the center of your paper to represent the mean height of 64 inches. Then, draw a bell-shaped curve above and below the line to represent the distribution of heights. The curve should be symmetrical around the mean.

To label the horizontal axis, start by marking the mean at 64 inches. Then, use the standard deviation of 3.5 inches to mark the points that are one, two, and three standard deviations from the mean. This means that the first point will be at 64 - 3.5 = 60.5 inches, the second point will be at 64 - 3.52 = 57 inches, and the third point will be at 64 - 3.53 = 53.5 inches.

To determine the number of sunflowers that will be taller than 71 inches, we can use the normal distribution to calculate the probability that a sunflower will be taller than 71 inches. Because the distribution is symmetrical around the mean, this probability will be the same as the probability that a sunflower will be shorter than 71 inches. We can then multiply this probability by the total number of sunflowers in the field to get the approximate number of sunflowers that will be taller than 71 inches.

To calculate the probability that a sunflower will be shorter than 71 inches, we need to know the z-score corresponding to 71 inches. The z-score is the number of standard deviations that a given value is from the mean. To calculate the z-score, we can use the formula z = (x - mean)/standard deviation, where x is the value we are interested in (71 inches), mean is the mean of the distribution (64 inches), and standard deviation is the standard deviation of the distribution (3.5 inches). Plugging these values into the formula, we get z = (71 - 64)/3.5 = 2.

We can use this z-score to look up the probability of a value being shorter than 71 inches in a standard normal table. A standard normal table is a table that shows the probabilities for different values of the standard normal distribution, which is a normal distribution with a mean of 0 and a standard deviation of 1. Because our distribution has a different mean and standard deviation, we need to convert our z-score to a standard normal value using the formula z_std = (z - mean)/standard deviation. Plugging in the values from our distribution, we get z_std = (2 - 64)/3.5 = -18.3. Looking up this value in a standard normal table, we find that the probability of a value being shorter than -18.3 is 0.00003.

We can use this probability to approximate the number of sunflowers that will be taller than 71 inches by multiplying the probability by the total number of sunflowers in the field. In this case, we have approximately 0.00003 * 3000 = 0.9 sunflowers that will be taller than 71 inches. This is a very small number, so it is likely that there will be no sunflowers in the field that are taller than 71 inches.

Answer:

V= Base X Height X Length

Step-by-step explanation:

Base = 5

Length = 7

Height = 3

Volume = 105

We can determine that we need 216 mL of 100% alcohol and 384 mL of 50% alcohol using the percentage by volume of the solutions that have been provided.

Volume/volume percentage, often known as v/v percent or %v/v, is a unit used to express how much of a substance is present in a solution.

It is defined as the volume of the solute divided by the sum of the volumes of the solution, multiplied by one hundred.

So, we know that:

A + B = 600 mL

We also understand that the final solution's total alcohol content must equal:

0.68 * 600 mL = 408 mL

So, it follows that:

0.50 * A + B = 408 mL

We can infer the following from the first equation:

A = 600 mL - B

In the second equation, using that A, we obtain:

0.50 * (600 mL - B) + B = 408 mL

300 mL - 0.50 B + B = 408 mL

The result of rearranging this equation is:

B - 0.50 * B = 408 mL - 300 mL

0.50 * B = 108 mL

B = 108 mL / 0.50

B = 216 mL

A = 600 mL - 216 mL = 384 mL

Therefore, we can determine that we need 216 mL of 100% alcohol and 384 mL of 50% alcohol using the percentage by volume of the solutions that have been provided.

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The p -value for the hypothesis test is; 0.4195

Let us first define the hypotheses.

We are told that the mean of u.s. college students in general, is estimated to be 4.73. Thus;

Null Hypothesis; H₀: μ = 4.73

Alternative Hypothesis; Hₐ: μ ≠ 4.73

Since we have the standard deviation for the sample, we will use the t-distribution with the formula;

t = (x' - μ)/(s/√n)

Where;

x' is the sample mean.

μ is the value tested at the null hypothesis.

s is the standard deviation of the sample.

n is the sample size.

We are given;

x' = 5.11

μ = 4.73

s = 3.98

n = 52

Thus;

t = (5.11 - 4.73)/(3.98/√52)

t = 0.688

Using a t-distribution calculator, this p-value is 0.4195

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She donated 30 percentage of her saving which is 74.40.

To calculate the percentage, divide the value by the total value and multiply the result by 100.

The formula for percentage = (Value/Total value) 100

We must use a different formula to calculate the percentage of a number, such as:

X = P% of Number

where X represents the required percentage.

If we remove the % sign, the above formulas must be expressed as;

X = P/100 * Number

Given:

She decided to donate = 30% of her savings

The total amount she had = 248

Let the amount she donated = x

[tex]amount donated=\frac{x}{100}whole \\= \frac{30}{100}248\\ = \frac{7440}{100} \\=74.40[/tex]

As per the question

Therefore, she donated 30 percentage of her saving which is 74.40.

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Answer:

-----------------------

Piano lessons cost $30 per lesson.

This can be expressed as function:

Evaluate the given ordered pairs:

A two-digit number 23 is written with its place values. The digit 2 is at tens place and stands for 20 and digit 3 is at ones place and stands for 3.

A two-digit number is a two-digit number that starts with 10 and ends with 99. We  can't start from scratch. In that case, it is assumed to be a single digit. The tens digit can be any number from 1 to 9. For example, 45, 78, 12 are two digit numbers.

The digit value is the position of each digit in the number. When talking about single-digit numbers, there is only one place value. When it comes to two-digit numbers, there are two digit values, 1 and 10.

For example:

a.) 33 ⇒ 3 tens + 3 ones = (3 × 10) + (3 × 1) = 30 + 3 = 33

b.) 18 ⇒ 1 tens + 8 ones = (1 × 10) + (8 × 1) = 10 + 8 = 18

c.) 27 ⇒ 2 tens + 7 ones = (2 × 10) + (7 × 1) = 20 + 7 = 27

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By calculating the equation LHS ≠ RHS, the answer is No solution.

What are the solutions to this system?

There are three types of systems of linear equations in two variables, and three types of solutions:

An independent system has exactly one solution pair (x,y). The point where the two lines intersect is the only solution.

An inconsistent system has no solution.

A dependent system has infinitely many solutions.

For this, you can substitute one of the y's with the other equation

-2x + 2 = -2x - 2

Add 2x to both sides

2 = 0x - 2

Add 2 to both sides

4 = 0

Since 2 does not equal 0 the answer is No solution

Hence, by calculating the equation LHS ≠ RHS, the answer is No solution.

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Therefore ,the probability that the number of heads will exceed 60 is 0.0176

The number of outcomes that could occur is the basis for the response is known as probability .To this question  the outcome in this case might be either head or tail. Therefore, there is a 50% chance that the result will be a head.

Here,

The  fair coin is tossed at random 100 times.

So we have to find probability that the number of heads will exceed 60

Thus,

=> P(number of heads will exceed 60) = [tex]\frac{C^{100} _{1} }{C^{2} _{60}}[/tex]

=> P(number of heads will exceed 60) =   0.01760010010885238

=> P(number of heads will exceed 60) =  0.0176

Therefore ,the probability that the number of heads will exceed 60 is 0.0176

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When you have a distribution without extreme values, the range typically provides you with a decent indication of variability.

In the given question, we have explain why we find the range.

When you have a distribution without extreme values, the range typically provides you with a decent indication of variability. The range can provide information about the breadth of the distribution when combined with metrics of central tendency. But if your data collection contains outliers, the range may be deceptive.

The difference between both the highest and lowest numbers in a collection or set is known as the range. Put together all statistics in order before considering a range. The lowest number should then be subtracted from the highest. The range of the list is provided in the response.

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Answer: 26

Explanation: Well, by using the formula to find volume of frustum. (this can be shown in a easier way or harder i choose my own way)

Step 1: The hight is: h=15h=15

Step 2: The top radius of the frustum is: r=19r=19

Step 3: The lower base radius of the frustum is: R=26R=26

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The expected waiting time to get a court is 8(k + 1).

What is expected time?

The projected time is simply the time frame in which the Project is anticipated to be finished. When the parties to the project contract are signing it, they will either mutually agree upon this time or decide it together with the participation of all the stakeholders, contractors, and clients.

They need to wait for k+1 pairs to finish before they can start.

Since the exponential distribution is memoryless, the expected time for a given pair to finish once started is 40 minutes, and there are 5 courts,

the expected time for any of the 5 courts to finish is 40/5=8 minutes, and so their expected waiting time is 8(k+1) minutes.

Hence, the expected waiting time to get a court is 8(k + 1).

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From the given the option moved left 1 unit; reflected across the x axis is the correct.

what is function?

A function from a set X to a set Y in mathematics assigns each element of X exactly one element of Y. The set X is known as the function's domain, and the set Y is known as the function's codomain.

We have to describe the position of the function [tex]f(x) = -2^x^+^1[/tex] relative to the basic function [tex]2^x[/tex].

Let the parent function is [tex]2^x[/tex].

After shifting one unit right it becomes, [tex]2^x^+^1[/tex].

After reflection in x axis it  becomes, [tex]-2^x^+^1[/tex].

Hence, from the given the option moved left 1 unit; reflected across the x axis is the correct.

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Answer:

To find the slope-intercept form of the line that passes through the points (−2, 6) and (−1, 18), we can use the slope-intercept form y = mx + b, where m is the slope of the line and b is the y-intercept.

First, we need to find the slope of the line. The slope of a line is calculated using the formula m = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are the coordinates of two points on the line. Substituting the coordinates of the points given in the problem, we have:

m = (18 - 6) / (−1 - (−2)) = 12 / 3 = 4

Next, we need to find the y-intercept of the line. The y-intercept is the point where the line crosses the y-axis, which has an x-coordinate of 0. Substituting the slope and the coordinates of one of the points given in the problem, we can solve for b:

y = mx + b

6 = 4 * (−2) + b

6 = −8 + b

b = 6 + 8 = 14

Therefore, the slope-intercept form of the line that passes through the points (−2, 6) and (−1, 18) is y = 4x + 14.

Step-by-step explanation:

Example of Divergent Plate: Mid Atlantic ridge, Red Sea Ridge, and Southeast Indian Ridge.

Example of Convergent Plate: The collision between the Eurasian Plate and the Indian Plate.

Example of Transform Plate: San Andreas Fault Zone of western North America.

In plate tectonics, a divergent boundary or divergent plate boundary (also called constructive or extensional boundary) is a linear feature that exists between two tectonic plates moving apart. Diverging boundaries within continents first create rifts that eventually become rift valleys. The most active diverging plate boundaries occur between oceanic plates and exist as mid-ocean ridges.

Recent research suggests that complex convective currents within the Earth's mantle allow matter to rise to the bottom of the lithosphere beneath each divergent plate boundary. This provides the region with a tremendous amount of heat and pressure reduction that melts rock from the asthenosphere (or upper mantle) below the rift region, forming large flood basalts or lava flows.

When continental and oceanic plates collide, the thin, dense oceanic plate is overwritten by the thicker, less dense continental plate. The oceanic plate is being pushed into the mantle in a process known as "subduction." As the oceanic plate sinks, it is forced into a hotter environment. At a depth of about 160 km (100 miles), the material within the subducting plate begins to approach melting temperatures and the process of partial melting begins.

This partial melting creates a magma chamber above the subducting oceanic plate. These magma chambers are less dense and buoyant than the surrounding mantle material. A buoyant magma chamber begins to rise slowly through the material above it, melting and rupturing as it rises. The size and depth of these magma chambers can be determined by mapping the seismic activity around the magma chambers. When a magma chamber rises to the surface without solidifying, magma breaks through in the form of a volcanic eruption.

A third type of plate boundary is a deformation fault where plates slip past each other without creating or breaking the crust. Rocks facing each other on both sides of a fault are usually of different types and ages, because rocks are cut and displaced by movement in opposite directions. These structures are so-called strike faults.

As friction increases and the sliding motion of the blade stops at one point, stress builds up and can be released with abrupt slippage. These can lead to some of the most damaging earthquakes in the continental crust. The San Andreas Fault (western United States), the North Anatolia Fault (Turkey), and the Dolores-Guayaquil Mega Fault in the northern Andes are examples of massive strike faults that cut through the continental crust.

Mid-ocean ridges are also often offset by so-called transformation faults. However, due to its association with stress distribution centers and the varied nature of the oceanic crust, earthquakes occurring there are usually shallow and therefore weak.

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The linear function can be represented by slope intercept form, point slope form and standard form.

Given,

Linear function;

A straight line on the coordinate plane is represented by a linear function. As an illustration, the equation y = 3x – 2 depicts a linear function because it is a straight line in the coordinate plane. This function can be expressed as f(x) = 3x - 2 since y can be replaced with f(x).

We can represent linear function by;

The slope intercept form, point slope form, and standard form can all be used to express a linear function.

Slope intercept form;

The equation of a straight line in the form y = mx + b where m is the slope of the line and b is its y-intercept.

Point slope form;

The equation of a straight line that passes through a particular point and is inclined at a specific angle to the x-axis can be found using the point slope form.

Standard form;

Ax+By=C is the usual form for two-variable linear equations. A standard form linear equation is, for instance, 2x+3y=5. When an equation is given in this format, finding both intercepts is rather simple (x and y). When attempting to solve systems involving two linear equations, this form is also quite helpful.

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Answer:

x

Step-by-step explanation:

a) Cost of debt, I = 4.25%(annual)

b) After tax cost of debt = 3.315%

c) After tax cost of debt of 3.135% is more relevant.

Given:

FV = 100

Semiannual bond issued 3 years ago

Maturity = 27

Price, PV = 104

coupon rate = 4.5%

Tax rate = 22%

a) Semiannual bond issued 3 years ago

Maturity, n = 27 years × 2 = 54

Coupon C = 4.5%/2×100 = 2.25

Now,

Pretax cost of debt,

Cost of debt, I = [C+(FV-PV)/n] / (FV+PV)/2

= [2.25 +(100 - 104)/54] / [ 100+1040/2

= 2.12%

= 2.12×2

Cost of debt, I = 4.25%(annual)

b) After tax cost of debt = cost of debt × (1-T)

= 4.25% × (1-22%)

After tax cost of debt = 3.315%

c) After tax cost of debt is more relevant.

Hence we get the required answer.

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Supply and demand are two factors that affect how much a country's currency is worth.

The supply and demand of a country's currency determine the value of that currency in a free-floating currency exchange market. A currency improves in value or appreciates when demand for it rises. A currency loses value or depreciates when there is less demand for it.

Money's demand determines how much it is worth. When there is still a strong demand for treasuries, the US dollar increases. The value of a currency determines both its supply and demand. For instance, if a nation prints a lot of currency, the value relative to other currencies will drop because supply exceeds demand. Inflation will happen if the cost of products rises or the value of money declines in comparison to other assets.

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the jensen measure of performance evaluation for sooner stock fund will be 2.6%.

What is the percentage?

A percentage that represents a tenth of a quantity. One percent, denoted by the symbol 1%, is equal to one-hundredth of something; hence, 100 percent denotes the full thing, and 200 percent designates twice the amount specified. A portion per hundred is what the percentage denotes. The percentage refers to one in a hundred. The % sign is used to denote it.

the risk-free return during the sample period was 3%.

performance evaluation for sooner stock fund.

Expected return of Sooner Stock Fund = E(Rp) = 20%

Beta of stock = 1.8

risk free rate Rf = 3%

Market Return Rm = 11%

So, Jensen measure alpha = E(Rp) - Rf - beta*(Rm - Rf) = 20 - 3 - 1.8*(11-8) = 2.6%

Hence the Jensen measure of performance evaluation for the sooner stock fund will be 2.6%.

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The Graph of the Function f(x) = 3|x + 2| will the third graph

What are Function?

In mathematics, a definition from a set X to the a set Y assigns each component of X precisely one element of Y. The set X is known as the function's domain, as well as the set Y is known as the function's codomain. Al-Biruni as well as Sharaf al-Din al-Tusi, two Persian mathematicians, are responsible for the earliest known treatment of the idea of function. Initially, functions represented the idealised relationship between varying quantities and other variables. For instance, time affects a planet's position. In the past, the idea was developed with infinitesimal calculus just at end of the 17th century and until the late nineteenth century, this same functions that were taken into consideration were differentiable.

Solution:

The Graph of the Function f(x) = 3|x + 2| will the third graph as shown in the attached image too

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Answer:

$442.75

Step-by-step explanation:

40.25 x 11.00= 442.75

Linkage occurs when on the same chromosome, two genes are closer to each other . On the other hand, Crossing Over takes place when on the same chromosome, two genes are located far apart. Crossing Over may disturb the gene groups made by Linkage.

What is a linkage?

Linkage is the propensity of inheriting genes together on the same chromosome. It is a process in which genes are kept within a chromosome, so that it can be inherited together.

What is a crossing over?

Crossing over is a process of segregation of genes on the chromosome. It further sub-divides the chromosome into its component gametes.

Both, the process of linkage and crossing over are somewhat related to each other, but are yet different phenomenon. Genes are segregated into gametes through the process of crossing over. The lesser the distance in the same chromosome, the lesser is the chance of them being segregated through crossing over.

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The algebraic description of the given transformation will be 2/3 (x, y) —> (2/3 x, 2/3 y) thus, option (C) is correct.

Transformation is rearranging a graph by a given rule it could be either increment of coordinate or decrement or reflection.

Reflection is a mirror image of a graph about any axis.

If we reflect any graph about y = x then the coordinate will interchange it that (x,y) → (y,x).

As per the given coordinate P(-9,12) and P'(-6,8)

Since, (2/3)(-9) = -6 and (2/3)(12) = 8

Thus, 2/3 (x, y) —> (2/3 x, 2/3 y) will be correct.

Hence "The given transformation will have the algebraic description 2/3 (x, y) —> (2/3 x, 2/3 y)".

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Feline Flavor is cheaper per pound than Kitty Kibbles (or Kitty Kibbles is more expensive than Feline Flavor per pound).

What is unit rate?

A unit rate is the cost for only one of anything. This is expressed as a ratio with a denominator of 1. For instance, if you covered 70 yards in 10 seconds, you did so at an average speed of 7 yards per second. Although both of the ratios—70 yards in 10 seconds and 7 yards in one second—are rates, only the latter is a unit rate.

To find the unit price you divide the total cost of the bag by the amount of pounds in the bag.

Thus, the unit price of Kitty Kibbles is 24/16, or 1.5.  This means that each pound of Kitty Kibbles costs $1.50.

Also, the unit price of Feline Flavor is 11.20/8, or 1.4.  This means that each pound of Feline Flavor costs $1.40

Feline Flavor is cheaper per pound than Kitty Kibbles (or Kitty Kibbles is more expensive than Feline Flavor per pound).

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Answer:6,155.55

Step-by-step explanation: 6.255*1010=6,317.55

1.5*108=162

6,317.55-162=6,155.55

The use of water in a year will be 138 cubic meter.

What is cube?

The term "cube" refers to a solid three-dimensional shape in mathematics or geometry that has six square faces, eight vertices, and twelve edges. It is also asserted to be a conventional hexahedron. You must be familiar with the three-by-three Rubik's cube, which is the most prevalent example in daily life and can help to increase brain capacity. Similar to this, you'll run into a lot of real-world examples, like 6 sided dice, etc. Solid geometry is the study of three-dimensional objects with surface areas and volumes. Cube, cylinder, cone, and sphere are some of the other solid shapes. Here, we'll talk about its definition, attributes, and relevance to mathematics.

one cubic meter equals 264 gallons.

if you use 100 gallons of water per day.

In a year it will take 365*100 = 36500.

So total water is = 36500/264 = 138.

Hence the use of water in a year will be 138 cubic meters.

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Answer:

3−4(1+a)=7Step 1: Simplify both sides of the equation.3−4(1+a)=73+(−4)(1)+(−4)(a)=7(Distribute)3+−4+−4a=7(−4a)+(3+−4)=7(Combine Like Terms)−4a+−1=7−4a−1=7Step 2: Add 1 to both sides.−4a−1+1=7+1−4a=8Step 3: Divide both sides by -4.−4a−4=8−4a=−2

Answer:a=−2