Of the students in your class, 12% are left-handed. What fraction of the students are left-handed? Are there more right-handed or left-handed students? Explain. Write your answers in simplest form.
How many students are left handed?
How many are right handed?

The standard deviation of the costs is 37 Dhs

The given mean is 173 and 3% of costs exceed 243. We have to calculate the standard deviation of the cost. Therefore, let's first start by calculating the z-score as follows;z-score formula = `(x - μ) / σ`z-score = `243 - 173 / σ`z-score = `70 / σ`We need to find the standard deviation of the costs. Since the z-score formula includes standard deviation, we can first calculate the z-score and then use it to calculate the standard deviation.Using the z-table, we can find the z-score for 3% = -1.88-1.88 = (243 - 173) / σσ = (243 - 173) / -1.88σ = -70 / -1.88σ = 37.23≈ 37The standard deviation of the costs is 37 Dhs. Hence, the correct option is as follows.Option D is the correct option.

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The length of an organ pipe closed at one end that produces a fundamental frequency of 256 Hz when air temperature is 18.0 °C is 0.50 m.

The length of an organ pipe closed at one end that produces a fundamental frequency of 256 Hz when air temperature is 18.0 °C is 0.50 m.

As we know that when the pipe is closed at one end, the fundamental frequency f1 can be given by the following formula;

\($$f_{1}=\frac{v}{4 l}$$\) where, v is the velocity of sound, and l is the length of the organ pipe. Here, given that the fundamental frequency is 256 Hz at the temperature 18.0 °C. Using the standard formula, the velocity of sound can be given as follows;

\($$v=\sqrt{\gamma R T}$$\) where R is the gas constant and γ is the ratio of specific heats, T is the temperature in Kelvin.In order to calculate the velocity of sound v at 18.0 °C, we need to convert it into Kelvin.

So,\($$T=18.0^{\circ} \mathrm{C}+273.15=291.15 \mathrm{K}$$$$v=\sqrt{\gamma R T}=\sqrt{1.40 \times 287 \times 291.15}=346.57 \mathrm{~m} / \mathrm{s}$$\)

Putting the given values in the formula of the fundamental frequency we get; \($$f_{1}=\frac{v}{4 l} \Rightarrow l\)

=\(\frac{v}{4 f_{1}}=\frac{346.57}{4 \times 256}=0.50 \mathrm{~m}$$\)

the length of an organ pipe closed at one end that produces a fundamental frequency of 256 Hz when air temperature is 18.0 °C is 0.50 m.

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Answer: Fail to provide adequate support for, and  are unrelated to

Step-by-step explanation: I took the exam

Answer:

(3+1)X 6

Step-by-step explanation:

that means 4x6

Answer:

A

Step-by-step explanation:

A because it is the only one the recipe calls for 1 cup of sugar and 1/2 cup of flour, the point is in the middle but also on one.

The correct graph for represents the relationship is shown in image.

The equation of line in point-slope form passing through the points

(x₁ , y₁) and (x₂, y₂) with slope m is defined as;

⇒ y - y₁ = m (x - x₁)

Where, m = (y₂ - y₁) / (x₂ - x₁)

Given that;

A brownie recipe calls for 1 cup of sugar and 1/2 cup of flour to make one batch of brownies.

And, To make multiple batches, the equation is,

f = 1/2s

Now, We can assume that;

Let s = 2 ;

that means,

f = 1/2 x 2

f = 1  

That means for 2 cups of sugar there is 1 cup of flour.

Hence, The correct graph for represents the relationship is shown in image.

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Answer: B

Step-by-step explanation:

the equation we get as a result of adding the two given equations is 2x - 8y = 11/2.

Given equations are:-2x + 4y = 173x - 10y = -3To get the result of adding the two equations, we can use the addition method. First, we will multiply the second equation by 2 and then add it to the first equation, which will eliminate x terms.-2x + 4y = 17 .......(i)3x - 10y = -3 .......(ii)Multiplying equation (ii) by 2, we get:6x - 20y = -6Adding equation (i) and (ii), we get:4x - 16y = 11Simplifying further, we get:2x - 8y = 11/2,

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The possible arrays are obtained such as 1 × 5 and 5 × 1, 1 × 7 and 7 × 1, and 1 × 11 and 11 × 1.

An array in mathematics is a group of figures that will all behave in a particular way. A visual aid for showing multiplication and division, an array is an organized arrangement that is frequently made up of rows, column, or a matrix.

As per the instructions given in the question,

As 1 and 5 are the components of 5. Consequently, there will only be two arrays of five that may be drawn if all possibilities are considered,

⇒ 1 × 5 and 5 × 1

1 and 7 are the factors of 7, thus. As a result, there will only be two ways to draw all seven potential arrays, which are,

⇒ 1 × 7 and 7 × 1

Given that 1 and 11 are factors of 11, 11. As a result, there will only be two arrays of 11 that may be drawn, and they are,

⇒ 1 × 11 and 11 × 1

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Answer:

b = 43

Step-by-step explanation:

So let's plug things in first:

y= 2x - 20 and y= -5x +b which can become →

2x - 20 = -5x + b (now you said that x=9 so let's plug that in)

2(9) -20 = -5(9) + b (now try solving that)

18 -20 = -45 + b → -2 = -45 + b ( so then add 45 to both sides)

43 = b ( and there's your answer )

Diameter is 70m

Thus radius = half of diameter= 70/2 = 35meters

Angle of rotation (teta) = 280 degrees

The distance covered will be

The runner has traveled 171.06 meters

The dimensions of the rectangle are;

length = 1 inch and width = 4 inches.

The whole distance that a rectangle borders, or its sides, the cover is known as its perimeter. Given that a rectangle has four sides, the perimeter of the rectangle will be equal to the total of its four sides.

Given:

The width of a rectangle is 7 inches less than 2 times its length.

Let the length be n inches.

So, the width is 2n - 7 inches.

The perimeter of the rectangle = 10 inches.

2(n + 2n -7) = 10

3n = 5 + 7

3n = 12

n = 4.

And the length is 1 inch.

Therefore, the dimension is 1 by 4 inches.

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Answer:

x=22

Step-by-step explanation:

Let the unknown number be x

:- the power of x = x³

From the question

x³-15=7 and x²

x³=7+15

x³ * x²= 22

x= 22

The profit for the option writer is $3,900.

In this scenario, the option writer sold a put option on the Canadian dollar with an exercise price of USD 0.76/CAD. The premium received for the option was $0.039/CAD. The contract size is CAD 100,000, and the spot price at maturity is $0.76/CAD. However, since the spot price at maturity is equal to the exercise price of $0.76/CAD, the option is not exercised. As the option writer, the profit is determined by the premium received. In this case, the premium received per contract is $0.039/CAD. Multiplying this by the contract size of CAD 100,000, we get $3,900.

It's important to note that if the spot price at maturity had been lower than the exercise price, the option would have been exercised, resulting in a loss for the option writer equal to the difference between the exercise price and the spot price, multiplied by the contract size.

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Answer:

x=4

Step-by-step explanation:

Based on the given conditions, formulate: 28(6-x)+30x = 176

Apply the Distributive Property: 168 - 28x+30x = 176

Combine like terms: 168+2x=176

Rearrange variables to the left side of the equation: 2x=176-168

Calculate the sum or difference: 2x=8

Divide both sides of the equation by the coefficient of variable:x=8/2

Cross out the common factor: x=4

2+​(−7​) is 7 units from -2 in the negative direction is the correct answer. 7 units and negative is the required answer to fill the blanks correctly.

Integers include all whole numbers and negative numbers. This means if we include negative numbers along with whole numbers, we form a set of integers.

A number line is a visual representation of numbers on a straight line. This line is used for the comparison of numbers that are placed at equal intervals on an infinite line that extends on both sides, horizontally. Just like other numbers, the set of integers can also be represented on a number line.

The given statement is -2+​(−7​) is​ ___ units from -2​, in the​ ___ direction.

We have to fill the blanks accordingly.

Let's solve  -2+​(−7​), we get

= -2+​(−7​)

= -2-7

= -9

so, we have concluded that  -2+​(−7​) is 7 units from -2 in the negative direction.

Therefore, the complete statement is as follows:

2+​(−7​) is 7 units from -2 in the negative direction.

Hence, 7 units and negative is the required answer to fill the blanks correctly.

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Answer:

  B. at an x–intercept

Step-by-step explanation:

You can find a graph of the sine function in numerous places.

  y = sin(0) = 0

  y = 0 for x = 0

so, on the given interval, it starts at an x-intercept.

It will take total 90 minutes to finish the book and 60 minutes to read the left 40 pages.

When two numbers can be written as p/q is called a Ratio , and when two ratios are equal they are said to be in proportion .

It is given that

Jeremy is reading a 60-page book.

The time taken to read  20 pages is 30 minutes

Then it can be written as 20:30 = 2:3

The rate of reading is same so To read the rest 40 pages is given by

40:x

40: x = 2:3

40*3/2 = x

x = 60 minutes

Therefore it will take total 90 minutes to finish the book and 60 minutes to read the left 40 pages.

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Answer:

The answer is {-12, -2}

Answer:

hi, first question's answer B.

because if you want to draw a triangle, there is have to be some rules. like can you draw a triangle 2,2,20? that could be impossible because all the edges have to intersect. think a triangle and it has 3 edges. they are A,B,C

if you wanna write random numbers, you have to do this.

A+B>C>|A-B|

A+C>B>|A-C|

C+B>A>|C-B|

soo, 7+11= 18 and 11-7=4

second question's answer is this:

60+x+32+90=180(if you wonder where is the 90 came from, the triangle's one side has square. that mean its 90°.

182+x=180

x=-2

if you have questions about these questions, you can ask me.

good luck(:

Answer as a mixed number =  1   1/8  mph

Answer as a decimal = 1.125 mph

Work Shown:

(3/4) of a mile : (2/3) of an hour

12*(3/4) of a mile : 12*(2/3) of an hour

9 miles : 8 hours

9/8 miles : 8/8 hours

1.125 miles : 1 hour

His speed is 1.125 miles per hour. This converts to the mixed number 1 1/8

Answer:  C

Step-by-step explanation:

If a parabola is given by \(a(x - h)^2 + k\), the focus is at the point \((h, k + 1/4a)\).

We know the focus is \((3, 8)\), so it should look like \(a(x - 3)^2 + k\). We can cross off B and D.

Let's check if A works: \(8 = -9 + 1/(4 \cdot \frac 14) = -8\). Obviously this is false, so we can cross off A.

Thus it's C by process of elimination.

The given series is the sum of the p-series with p = 3/2, that is, Σn^(3/2) / 3^n.

To determine whether the series converges or diverges, we can apply Theorem 9.11, which states that the p-series Σn^p converges if p > 1 and diverges if p ≤ 1. Since p = 3/2 > 1, the series converges by Theorem 9.11.

To see why, note that Σn^(3/2) / 3^n ≤ Σn^(3/2) / 2^n for all n ≥ 1. This is because 3^n > 2^n for all n ≥ 1. Now, Σn^(3/2) / 2^n is a convergent geometric series with common ratio (1/2)^(1/2) < 1, and so by the Comparison Test, Σn^(3/2) / 3^n converges as well. Therefore, the given series converges.

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Answer:

the answer is 12

Step-by-step explanation:

its twelve because there is 4 quiarts in a gallon and 4*3=12

Answer:

-10 points

Step-by-step explanation:

A game show awards 30 points for each correct answer and deducts 50 points for each in correct answer. A contestant answers 2 questions incorrectly and 3 questions correctly. What is his final score?

Let us say Initial number of points = 0

Hence,

He answers 2 incorrectly = 0 - 50 - 50

= -100

He answers 3 correctly =-100 + 30 + 30 + 30

His final score = -100 + 30 + 30 + 30

= -10 points

Since each trait is inherited independently, we can multiply the probabilities together. The probability of obtaining A/a; B/b; C/c; D/d offspring is (1/2) * (1/2) * (1/2) * (1/2) = 1/16.

The probability of obtaining A/a; B/b; C/c; D/d offspring can be calculated by multiplying the probabilities of each individual trait. Since each trait is inherited independently, we can multiply the probabilities together.

The probability of obtaining A/a offspring is 1/2 (A is dominant and a is recessive).

The probability of obtaining B/b offspring is 1/2 (B is dominant and b is recessive).

The probability of obtaining C/c offspring is 1/2 (C is dominant and c is recessive).

The probability of obtaining D/d offspring is 1/2 (D is dominant and d is recessive).

Therefore, the probability of obtaining A/a; B/b; C/c; D/d offspring is (1/2) * (1/2) * (1/2) * (1/2) = 1/16.

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Answer:

Continuous graph.

Explanation:

Looking at the graph in the picture, we can say that it is a continuous graph because the line of the graph is continuous and not interrupted. There is a y value for every value of x.

The domain of the function graphed in the image is all real numbers which can be represented as shown below;

The matrix for d11 = 5  and d21 = 11

For the matrix [1, 2; 3, 4] × [1, -1; 2, 1] = [d11, d12; d21, d22]

d11 = 1×1 + 2×2

= 1 + 4

=5

d21 = 3×1 + 4×2

= 3 + 8

= 11

The above answer is based on the question below;

solve the matrix

[1, 2; 3, 4] × [1, -1; 2, 1] = [d_11, d_12; d_21, d_22]

d_11 =                     d_12 = 1

d_21 =                   d_22 = 1

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Answer:

the answers is -10. I hope this helps you out

The solution to the inequality 3(x-4) ≥ 5x + 2 is when x = -10

Therefore, the correct answer is Option A. -10

Given data:

The inequality relation is represented as 3(x-4) ≥ 5x + 2

On simplifying the equation:

From the distributive property:

3x - 12 ≥ 5x + 2

Adding 12 on both sides:

3x ≥ 14 + 5x

Subtracting 5x on both sides:

-2x ≥ 14

Divide by -2 on both sides:

x ≤ -7

The inequality relation changes when the operand is -1.

So, the values of x should be less than -7

Hence, the solution is when x = -10, the inequality satisfies.

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The complete question is attached below:

What value of x is in the solution set of 3(x – 4) ≥ 5x + 2?

–10

–5

5

10