45 points, need answers ASAP!!! Match each definition with the correct vocabulary word. The variable whose values result from counting or measuring something. The variable (often x) that does not depend on that of another. The variable (often y) whose value depends on that of another. The variable that has two or more groups, but there is no intrinsic ordering to the groups.​

45 Points, Need Answers ASAP!!! Match Each Definition With The Correct Vocabulary Word. The Variable

Answers

Answer 1

Answer:

Step-by-step explanation:

The matches are:

The variable whose values result from counting or measuring something: quantitative variableThe variable (often x) that does not depend on that of another: independent variableThe variable (often y) whose value depends on that of another: dependent variableThe variable that has two or more groups, but there is no intrinsic ordering to the groups: nominal variable

Related Questions

f(x)=3x^3+5x^2-11x+3

Answers

Polynomials are functions that are constructed from a sum of powers of the independent variable x, multiplied by coefficients. In this case, we have powers of x from 0 to 3, and the coefficients are 3, 5, -11, and 3.

To evaluate the function for a particular value of x, we substitute that value in place of x and perform the necessary arithmetic. For example, to find f(2), we substitute x = 2 in the expression for f(x):

f(2) = 3(2)^3 + 5(2)^2 - 11(2) + 3

= 24 + 20 - 22 + 3

= 25

Therefore, f(2) = 25. We can similarly evaluate the function for other values of x.

Nathan is driving to a concert and needs to pay for parking. There is an
automatic fee of $8 just to enter the parking lot, and when he leaves
the lot, he will have to pay an additional $2 for every hour he had his
car in the lot. How much total money would Nathan have to pay for
parking if he left his car in the lot for 6 hours? How much would
Nathan have to pay if he left his car in the lot for t hours?
Cost of parking for 6 hours:
Cost of parking for t hours:

Answers

Answer:

Nathan would have to pay 20 dollars if he parked for 6 hours.

2t+8

Step-by-step explanation:

Which table shows values for the equation y=3x+2
?

Answers

Answer:

Answer is option  D

Step-by-step explanation:

Hope this helps:)

John ran up and $88 Bill last Saturday the service was excellent so we decided to leave a 30% tip for the waitress how much was his tip

Answers

$26.40

ten percent is 88 divided by 10= 8.8

8.8 multiplied by 3 is 26.40

Now that you have learned about the addition and subtraction of polynomials, it is time to learn about multiplication. What is the process for adding and subtracting polynomials? Do you think that process will be the same for multiplication?

Answers

No, the process for multiplying polynomials is different from adding and subtracting.

What exactly are polynomials?

Polynomials are algebraic expressions made up of variables and coefficients that are joined using the addition, subtraction, and multiplication operations. The variables in a polynomial can be raised to non-negative integer powers.

For example, the expression 3x² - 2x + 1 is a polynomial, where 3, -2, and 1 are the coefficients, and x², x, and 1 are the variables with their respective powers.

Now,

The process for adding and subtracting polynomials involves combining like terms. To add or subtract two polynomials, we simply combine the coefficients of the same degree terms.

For example, to add the polynomials 2x² + 3x + 4 and 4x² - 2x - 1, we group the like terms and add the coefficients:

(2x² + 4x²) + (3x - 2x) + (4 - 1) = 6x² + x + 3

To subtract the polynomial 4x² - 2x - 1 from the polynomial 2x² + 3x + 4, we change the sign of the second polynomial and then combine the like terms:

(2x² + 3x + 4) - (4x² - 2x - 1) = 2x² + 3x + 4 - 4x² + 2x + 1 = -2x² + 5x + 5

The process for multiplying polynomials is different from adding and subtracting. When we multiply two polynomials, we need to distribute each term of polynomials, and then combine the like terms.

For example, to multiply the polynomials (x + 2) and (x - 3), we use the distributive property:

(x + 2)(x - 3) = x(x - 3) + 2(x - 3) = x² - 3x + 2x - 6 = x² - x - 6

As we can see, the process for multiplying polynomials is different from adding and subtracting, but all three operations involve combining like terms in some way.

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x^2+10x-1
x^2+8x-2
find the perfect square it should be in (x+/-_)(x+/-_) form

Answers

x2+10x+25 is a perfect square trinomial

Find the value of t for a t-distribution with 45 degrees of freedom such that the area to the right of t equals 0.010. Round your answer to three decimal places, if necessary.

Answers

The value of t for a t-distribution with 45 degrees of freedom such that the area to the right of t equals 0.010 is approximately -2.326.

With its bell-shaped structure and heavier tails, the t-distribution, commonly referred to as the Student's t-distribution, is a kind of probability distribution that resembles the normal distribution. When there are insufficient samples or unknown variances, it is used to estimate population parameters. T-distributions have broader tails than normal distributions because they are more likely to contain extreme values.

To find the value of t for a t-distribution with 45 degrees of freedom such that the area to the right of t equals 0.010, we can use a t-table or a calculator. Using a calculator, we can use the inverse t-distribution function. The inverse t-distribution function gives us the value of t for a given probability and degrees of freedom.

Using this function, we have:

t = invT(0.010, 45) ≈ -2.326

Rounding this to three decimal places gives us the answer:

t ≈ -2.326

Therefore, the value of t for a t-distribution with 45 degrees of freedom such that the area to the right of t equals 0.010 is approximately -2.326.

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can you solve this question?
x=?
the value of this limit=?
y=?

Answers

The derivative of f(x) = 3·x² + 7·x + 6, at x = 4, f'(4) is presented as follows;

f'(4) is the limit as x → 4 of the expression 6·x + 7.

The value of this limit is 31

The equation of the tangent line to the parabola y = 3·x² + 7·x + 6 at the point (4, 82) is y = 31·x - 42

What is the derivative of function?

The derivative of a function is a measure of how much the output values of the function changes as the input value is changed. The derivative is the limit of the difference quotient as the change in input approaches zero. The limit is the instantaneous rate of change of the function at a specified input variable value.

The value of f'(4) using the definition of derivative, can be obtained using the following definition;

f'(x) = lim(h → 0)[f(x + h) - f(x)]/h

Plugging in x = 4, and f(x) = 3·x² + 7·x + 6, we get;

f'(4) = lim(h → 0)[f(4 + h) - f(4)]/h

f'(4) = lim(h → 0)[3·(4 + h)² + 7·(4 + h) + 6 - (3·(4)² + 7·(4) + 6)]/h

f'(4) = lim(h → 0)[(3·h + 31)·h]/h

f'(4) = lim(h → 0)[(3·h + 31)]

Therefore;

f'(4) = lim(h → 0)[(3·h + 31)] = 31

f'(4) = 31

Therefore; f'(4) is the limit as x → 4 of the expression 6·x + 7, therefore. The value of this limit is 31

The point-slope form of the equation of a line can be used to find the equation of the parabola as follows;

y - y₁ = m·(x - x₁)

The point (x₁, y₁) and the slope of the line is m

The point on the parabola of the tangent is; (4, 82)

The slope of the tangent line at x = 4, f'(4) = 31

The tangent equation is therefore;

y - 82 = 31·(x - 4)

y =  31·(x - 4) + 82 = 31·x - 42

The equation of the tangent line to the parabola, y = 3·x² + 7·x + 6, at the point (4, 82) is; y = 31·x - 42

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How do you solve the equation absolute value of K +7 equals three

Answers

Answer:

k=-4

Step-by-step explanation:

k+7=3

take way 7 from both sides

k=-4

BRAINLIEST + 40 POINTS!! ASAPP!!!!
please try to answer all questions below** TYYY

Answers

1.The equation that represents the proportional relationship is y = 4x + 3.

2. The corresponding equation that represents a proportional relationship is y = (1/5)x.

3. y = 7/2x.

4. when y = 21 is x = 6.

5. y = 8 is x = 3.33.

What is slope?

The slope of a function is the rate of change in the function's output (y-value) relative to the change in its input (x-value).

The equation that represents a proportional relationship is y = mx + b, where m is the slope of the equation.

In this equation, x and y are in direct proportion.

1.The equation that represents the proportional relationship is y = 4x + 3. This equation is in the form of y = mx + b, with m being the coefficient of x, which is 4, and b being the constant, which is 3.

2. The corresponding equation that represents a proportional relationship is y = (1/5)x.

This equation is in the form of y = mx + b, with m being the coefficient of x, which is 1/5, and b being the constant, which is 0.

3. The equation that represents this relationship is y = 7/2x.

This equation is in the form of y = mx + b, with m being the coefficient of x, which is 7/2, and b being the constant, which is 0.

4. The value of x when y = 21 is x = 6.

This is because the equation representing the proportional relationship is y = 7/2x, and

when y = 21, 21 = 7/2x,

so x = 6.

5. The value of x when y = 8 is x = 3.33.

This is because the equation representing the proportional relationship is y = 12/5x, and when y = 8, 8 = 12/5x, so x = 3.33.

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Simplify (Write each expression without using the absolute value symbol)
|x+3| if x>5

Answers

we can simplify |x+3| to x+3 when x is greater than 5. This is the final answer.The absolute value of a number is the distance of the number from zero on a number line, regardless of whether the number is positive or negative.

For example, the absolute value of -5 is 5, because 5 is the distance of -5 from zero on the number line.

In this problem, we are asked to simplify the expression |x+3| without using the absolute value symbol. We are also given the condition that x is greater than 5.

When x is greater than 5, we know that x+3 is also greater than 5+3=8. This is because x is already greater than 5, and adding 3 to it makes it even larger. So, we can say that x+3 is positive when x is greater than 5.

Now, let's consider what the absolute value of x+3 means in this context. Since x+3 is positive when x is greater than 5, the absolute value of x+3 is just x+3 itself. This is because the absolute value of a positive number is just the number itself.

Therefore, we can simplify |x+3| to x+3 when x is greater than 5. This is the final answer.

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A sine function has the following key features:

Period = 4

Amplitude = 3

Midline: y=−1

y-intercept: (0, -1)

The function is not a reflection of its parent function over the x-axis.

Use the sine tool to graph the function. The first point must be on the midline and the second point must be a maximum or minimum value on the graph closest to the first point.

Answers

The resulting graph should have a period of 4, an amplitude of 3, a midline of y=-1, and no reflection over the x-axis.

What are the period and amplitude of a graph?

The period of a function is the smallest distance over which the function repeats itself. In other words, it is the length of one complete cycle of the function. For a sine or cosine function of the form f(x) = a sin(bx) or f(x) = a cos(bx), the period is given by 2π/b.

The most simple sine function considered the parent function, is:

  y = sin(x)

That function has:

Midline, also known as rest or equilibrium position: y = 0

Minimum: - 1

Maximum: 1

Amplitude: the distance between a minimum or a maximum and the midline = 1

period: the interval of repetition of the function = 2π

The more general sine function is:

 y = Asin(Bx + C) + D            

That function has:

Midline: y = D (it is a vertical shift from the parent function)

Minimum: - A + D

Maximum: A + D

Amplitude: A

period: 2π/B

phase shift: C (it is a horizontal shift of from the parent function)

Now, you have to draw the sine function with the given key features:

Period = 4 ⇒ 2π/B = 4 ⇒ B = π/2

Amplitude, A = 3

midline y = - 1 ⇒ D = - 1

y-intercept = (0, -1)

Substitute the know values and use the y-intercept to find C:

y = 3sin(2x/π + C) -1

Substitute (0, -1)

-1 = 3sin(2(0)/π + C) -1

3sin(C) = 0

sin(C) = 0

C = 0

             

Hence, the function to graph is:

             y = 3sin(2x/π ) -1

To draw that function use this:

Maxima: 3(1) - 1 = 3 - 1 = 2, at x = 1 ± 4n (n = 0, 1, 2, 3, ...)

Minima: 3(-1) - 1 = - 3 - 1 = -4

y-intercept: (0, - 1)

x-intercepts: the solutions to 0 = 3sin(πx/2) = - 1

first point of the midline: (0, -1) it is the same y-intercept

Hence, the resulting graph should have a period of 4, an amplitude of 3, a midline of y=-1, and no reflection over the x-axis.

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In the diagram below, ABC~ DBE. If AD = 24, DB = 12, and DE = 4, what is the length of
AC?

Answers

Answer:

Step-by-step explanation:

because 110

Michelle is now 50 miles ahead of John.
Michelle is traveling at a constant rate. John is traveling in the same direction, at a rate 10 miles per hour faster than Michelle. In how many hours will John catch up to Michelle?
A. 6
B. 5
C. 2
D. 0
E. John can't catch up to Michelle

Answers

Let's call Michelle's speed "M" and John's speed "J". We know that John's speed is 10 miles per hour faster than Michelle's speed, so we can express this as:

J = M + 10

We also know that Michelle is 50 miles ahead of John, so we can express this as:

Distance = 50 miles

Now we can use the formula:

Distance = Rate x Time

We want to know how long it will take John to catch up to Michelle, so we can call this time "t". We can use the formula for both Michelle and John, and set their distances equal to each other since they will meet at the same point:

M * t + 50 = J * t

Now we can substitute J with M + 10, and simplify:

M * t + 50 = (M + 10) * t

M * t + 50 = M * t + 10t

50 = 10t

t = 5

Therefore, John will catch up to Michelle in 5 hours (answer choice B).

Will give brainly
Trig

Answers

Step-by-step explanation:

angle c = 180 -19 - 139 = 22 degrees   (  interior angles of a triangle sum to 180 degrees)

Now you can use law of sines to find the missing  side lengths

12 / sin 22  =  DC /sin19

DC = sin 19 * 12 / sin 22  = 10.4 units

12/sin 22 = BC / sin 132

BC =  sin132 * 12 / sin 22 =  23.8 units

Use a t-distribution to find a confidence interval for the difference in means =1−2
using the relevant sample results from paired data. Assume the results come from random samples from populations that are approximately normally distributed, and that differences are computed using =1−2
.

A 99% confidence interval for
using the paired data in the following table:


Case 1 2 3 4 5
Treatment 1 23 29 32 24 27
Treatment 2 17 32 24 22 21

Give the best estimate for
, the margin of error, and the confidence interval.

Enter the exact answer for the best estimate, and round your answers for the margin of error and the confidence interval to two decimal places.

best estimate = Enter your answer; best estimate


margin of error = Enter your answer; margin of error


The 99% confidence interval is Enter your answer; The 99% confidence interval, value 1
to Enter your answer; The 99% confidence interval, value 2
.

Answers

The range of the difference in means' 99% confidence level is from -1.42 to 10.02. The true mean difference between Treatments 1 and 2 falls between these two numbers, we can claim with 99% certainty for t-distribution.

We can use a t-distribution to determine a confidence interval for the difference in means using paired data. Prior to determining the mean difference and standard deviation of the differences, we first compute the difference between the paired observations.

Because we are only interested in the mean difference between Treatments 1 and 2, we compute the differences for each pair and get the following outcomes:

6 -3 8 2 6

The sample mean and sample standard deviation of these differences are then computed. The average of these variations is the sample mean.

(6 - 3 + 8 + 2 + 6)/5 = 3.8

The square root of the sum of squared differences divided by the degrees of freedom yields the sample standard deviation.

[tex]\sqrt{[(6 - 3.8)^2 + (-3 - 3.8)^2 + (8 - 3.8)^2 + (2 - 3.8)^2 + (6 - 3.8)^2]/(5-1)) } = 3.06[/tex]

The 99% confidence interval for the mean difference can then be determined using the t-distribution. Our sample size is tiny (n=5), so we utilise a t-distribution with four degrees of freedom.

The sample mean, which is 3.8, provides the most accurate approximation of the mean difference.

We must determine the crucial value of t for a 99% confidence interval with 4 degrees of freedom in order to determine the margin of error. The crucial value, which we determine using a t-table, is 4.604.

The margin of error is:

[tex]4.604 * (3.06/\sqrt{5}) = 5.22[/tex]

Lastly, by deducting and adding the margin of error from the sample mean, we can determine the confidence interval:

3.8 - 5.22 = -1.42

3.8 + 5.22 = 10.02

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Porter is buying t ride tickets at the country fair. He spends d dollars and receives 3 tickets for every dollar he spends. Which is the independent variable and which is the dependent variable?

Answers

The independent variable and the dependent variable are the number of dollars spent and the number of tickets bought

How to determine the independent variable and the dependent variable?

Given that we have the following statement:

Porter is buying t ride tickets at the country fair. He spends d dollars and receives 3 tickets for every dollar he spends.

The independent variable is the input value

i.e. the number of dollars spent

Similarly, the dependent variable is the output value

i.e. the number of tickets bought

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The measures of the angles of a triangle are shown in the figure below. Solve for x.

Answers

Answer:

x=14

Step-by-step explanation:

80+58=138

180-138=42

42÷3=x

14=x

Answer:

x= 14

Step-by-step explanation:

80 + 58 = 138°

A triangle has 180°

180-138= 42°

Put into equation

42=3x

42/3=14

X=14

Enter an expression equivalent to
d^8
——
d^3
in the form, d^n

Answers

From the expression, the form of the d⁵ is provided by the stated assertion.

What does an arithmetic the expression mean?

A group of words joined with the actions +, -, x, or  form an expression, such as 4 x 3 or 5 x 2  3 x y + 17. A statement containing the equals symbol, such as 4 b 2 = 6, says that two formulas are equivalent in value and is known as an equation.

Describe expression using an illustration.

As an illustration, the expression x + y is one where both x and y have words with an addition function in between. There are two kinds of expressions in mathematics: numerical expressions, which only comprise integers, and algebraic expressions, which also include variables.

[tex]d^{(8-3)} = d^5[/tex]

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Enter an expression equivalent to (d^(8))/(d^(3)) in the form, d^(n).

can you pls answer this for me im really struggling with this

Answers

Answer:

The slope of this line is 2.

Step-by-step explanation:

Start at (1, 0). Go up 4 units, then right 2 units. You will end at (3, 4). The slope of this line is 2.

Use the definition of a logarithm to solve the equation. ln ( − 5 z ) = ln ( z^ 2 − 7 z )

Answers

To solve for z, we can subtract 7 from both sides to get -5/z = -6. Finally, we can multiply both sides by -1 to get z = -7. Therefore, the solution to this equation is z = -7.

A logarithm is an equation that expresses the relationship between an exponent and its base. In this equation, we have two logarithms, ln (-5z) and ln [tex](z^2-7z)[/tex], which are both equal to each other. To solve this equation, we can use the properties of logarithms to isolate the variable. First, we can rewrite the equation as ln (-5z) - ln [tex](z^2-7z)[/tex]= 0, which can then be simplified to ln (-5/z+7) = 0. We can then take the inverse of both sides to get -5/z+7 = 1. To solve for z, we can subtract 7 from both sides to get -5/z = -6. Finally, we can multiply both sides by -1 to get z = -7. Therefore, the solution to this equation is z = -7.

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Use point-slope form to write the equation of a line that passes through the point (−11,−13) with slope -2/3 ​ .

Answers

Answer:

y + 13 = - [tex]\frac{2}{3}[/tex] (x + 11)

Step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b ) a point on the line

here m = - [tex]\frac{2}{3}[/tex] and (a, b ) = (- 11, - 13 ) , then

y - (- 13) = - [tex]\frac{2}{3}[/tex] (x - (- 11) ) , that is

y + 13 = - [tex]\frac{2}{3}[/tex] (x + 11)

A laboure digs a pit 6.5 m long, 3 m wide and 1.6 m deep. How much earth is du. out from it ?​

Answers

Answer:

Volume =

Step-by-step explanation:

Volume = length x width x depth

Volume = (6.5 x 3 x 1.6)m

Volume = 31.2m

Add 6.034 +10 +0.608

Answers

Answer: 16.642

Step-by-step explanation:

I hope this helped you! A brainilist is highly appreciated and helpful! <3

Answer: 16.642

Step-by-step explanation:

10 + 6.034 = 16.034

16.034 + 0.608 = 16.642

I’ll give you lots of points for these last two questions

Answers

Answer: 1. (8b + 5)

2. (22p - 9)

HAVE A GREAT DAY!!!!

Step-by-step explanation:

there is 30 students in tthe gym if there are at least 16 girls write an inequalitly

Answers

The number of girls in the gym must be: g ≥ 16

How to write the in equality?

Let's define the variable "g" to be a representation of the number of girls in the gym.

We know that there are 30 students in total. Therefore, the number of boys in the gym will be:

b = 30 - g

We also know that there are at least 16 girls in the gym. So, we can write the inequality:

g ≥ 16

This inequality means that the number of girls in the gym must be greater than or equal to 16.

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What is 231 3/25 x .75

Answers

to follow the order of operations or PEMDAS (parentheses, exponents, multiplication and division, and addition and subtraction) to ensure that we get the correct answer. [tex]231 3/25 \times 0.75 = 4348.5 / 75.[/tex]

What is the improper fraction?

To solve this multiplication problem, we can first convert the mixed number 231 3/25 to an improper fraction:

[tex]231 3/25 = (25 \times 231 + 3) / 25 = 5778/25[/tex]

Then, we can multiply this fraction by 0.75:

[tex]5778/25 \times 0.75 = (5778 \times 0.75) / 25[/tex]

To simplify this fraction, we can multiply the numerator and denominator by 3:

[tex](5778 \times 0.75 \times 3) / (25 \times 3) = 4348.5 / 75[/tex]

Therefore, [tex]231 3/25 x\times 0.75 = 4348.5 / 75.[/tex]

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A shuffleboard disk is accelerated to a speed of 5.6 m/s and released. If the coefficient of kinetic friction between the disk and the concrete court is 0.34, how far does the disk go
before it comes to a stop? The courts are 14.3 m long.

Answers

Answer:

Therefore, the shuffleboard disk will travel a distance of 4.71 meters before coming to a stop, which is less than the length of the court (14.3 meters).

Step-by-step explanation:

We can start by using the work-energy principle, which states that the net work done on an object is equal to its change in kinetic energy. In this case, we can assume that the initial kinetic energy of the disk is entirely converted to work done by friction, which causes the disk to come to a stop. The equation can be written as:

Work done by friction = Change in kinetic energy

The work done by friction can be calculated using the formula:

Work = force x distance

The force of friction can be found using the formula:

Force of friction = coefficient of friction x normal force

The normal force is equal to the weight of the disk, which can be found using the formula:

Weight = mass x gravity

Substituting the values given in the problem, we get:

Weight = mass x gravity = 0.75 kg x 9.81 m/s^2 = 7.3575 N

Force of friction = coefficient of friction x normal force = 0.34 x 7.3575 N = 2.4985 N

Work done by friction = Force of friction x distance

We can solve for the distance by rearranging the equation as:

Distance = Work done by friction / Force of friction

The initial kinetic energy of the disk can be found using the formula:

Kinetic energy = 0.5 x mass x velocity^2

Substituting the values given in the problem, we get:

Kinetic energy = 0.5 x 0.75 kg x (5.6 m/s)^2 = 11.76 J

Using the work-energy principle, we know that the work done by friction is equal to the change in kinetic energy, which is:

Work done by friction = Kinetic energy = 11.76 J

Substituting this value and the force of friction into the distance formula, we get:

Distance = Work done by friction / Force of friction = 11.76 J / 2.4985 N = 4.71 m

Therefore, the shuffleboard disk will travel a distance of 4.71 meters before coming to a stop, which is less than the length of the court (14.3 meters).

What is the nth term for the sequence 1, 8, 15, 22, 29

Answers

Answer:

[tex]a_{n}[/tex] = 7n - 6

Step-by-step explanation:

there is a common difference between consecutive terms , that is

8 - 1 = 15 - 8 = 22 - 15 = 29 - 22 = 7

this indicates the sequence is arithmetic with nth term

[tex]a_{n}[/tex] = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

here a₁ = 1 and d = 7 , then

[tex]a_{n}[/tex] = 1 + 7(n - 1) = 1 + 7n - 7 = 7n - 6

Answer:

7n-6

Step-by-step explanation:

Work out the difference of the sequence:

8-1=7

Now you have the first part of the equation: 7n

n is the number that the integer is on the sequence

In this case:

1 = 1 as 1 is the first number of the sequence

And 2 = 8 as 8 is the 2nd number of the sequence

To find the full equation:

Do 7x1 to get you 7

Now see how far the 1st number is from 7

In this case you would do:

7-1 which gives you 6

Since you subtracted it to find the difference, it would be:

- 6

Therefore your answer would be 7n-6

To check it:

Times 7 by let's say 3 to get you 21

Then subtract 6 to get 15.

This is proven right as the 3rd number of the given sequence is 15.

Hope this helped

Is 4p + 7n+ 3p and 14pn equal

Answers

Answer:

yes

Step-by-step explanation:

4p+ 3p= 7p

7p+7n=14pn

Other Questions
Move your mouse cursor over the hydrochloric acid (HCl) and sodium hydroxide(NaOH) on the Materials shelf. You will see that the concentration of the sodium hydroxide is known to be 0.1 M while the concentration of hydrochloric acid is unknown.Take a burette from the Containers shelf and place it on the workbench.Add 50 mL of sodium hydroxide (NaOH) titrant. (50 mL is the capacity of a burette). Notice that it doesn't fill completely to the top mark. This is because there is space in the burette below the bottom mark. In addition, this is NOT the volume in the burette but rather this is your INITIAL READING. In the wet lab, you would need to let some of the solution flow through the stopcock in order to assure that the NaOH solution completely filled the volume of the burette down to the tip. You don't have to do that here.Note the buret reading as your initial NaOH volume (mL). You can double click on the buret and select show close up to view the volume more closely.Take a clean Erlenmeyer flask from the Containers shelf and place it on the workbench.Add 10 mL of hydrochloric acid(HCl), unknown concentration, to the Erlenmeyer flask. Record the volume of HCL (mL).Add 10 mL of water to the Erlenmeyer flask. This increases the total volume in the flask, making it easier to see the color change, but note that the value to use for the volume of hydrochloric acid HCl when calculating its concentration is still 10 mL.Add 2 drops of phenolphthalein solution to the Erlenmeyer flask.Move the Erlenmeyer flask anywhere on the base of the burette. The Erlenmeyer flask is connected to the burette so that liquid will drip from the burette into the Erlenmeyer Flask.Flow of the titrant from the burette is controlled by the black knob at the bottom of the burette glass tube. You can deliver one drop of titrant with each short click of the black knob, and you can deliver a stream of titrant from the burette by clicking-and-holding the black knob - the longer you hold the knob, the more titrant will be delivered all at once. Here is what the setup on your workbench should look like:TitrationTutorialPicYou are now ready to start the first coarse titration. Try to find the length of time required to click and hold the burette knob so that you deliver approximately 2 mL of sodium hydroxide from the burette to the Erlenmeyer flask. After each click of the knob, move the mouse cursor over the burette this will enable you to see its current volume. To determine the amount of titrant delivered from the beginning until now, subtract the amount of liquid currently in the burette from the starting volume.Continue to add the sodium hydroxide titrant in 2 mL increments. Each time, note the burette volume level. Note when the end point is passed (when the color of your solution changes). You now know between which two readings the endpoint occurred. For example, if you recorded 32 mL before the end point, but 34 mL was past the endpoint, record the 32 mL as your FINAL NaOH (mL). Calculate the volume of titrant that was added when 32 mL were delivered (subtract your INITIAL NaOH (mL) reading). You know that the FINE TITRATION can begin after approximately that amount of titrant.Remove the Erlenmeyer flask from the burette and place them both in the Recycle Bin.Take a clean Erlenmeyer flask from the Containers shelf and place it on the workbench.Add 10 mL of hydrochloric acid, 10 mL of Water and 2 drops of phenolphthalein to the Erlenmeyer flask.Place the Erlenmeyer flask at the base of a new burette.Add 50 mL of sodium hydroxide titrant to the burette.Add the initial large quantity of titrant, determined performing the coarse titration, (which in the example in #10, was 16 mL) so that you can begin with the fine titration. The solution in the Erlenmeyer flask should still be colorless.Add sodium hydroxide from the burette drop-wise. This means adding a single drop at time which is done with single, short clicks on the black knob. You may decide to click and hold for short times, but in doing so you may miss the exact endpoint of the titration.When the solution in the Erlenmeyer flask changes color, stop adding titrant. Record FINAL NaOH (mL) reading. Calculate the NaOH Delivered (mL) by subtracting the initial reading from the final reading.In theory, we would repeat at least two more FINE TITRATIONS with fresh samples of HCl and full burets. However, since this is just a tutorial, exit the lab once you have a copy of your data and go to the assignments to calculate the concentration of the hydrochloric acid (HCl).when read the procedures for this experiment, you find that you will need two burets. what is the purpose of the second buret? In fruit flies, allele for long wing is dominant to the allele for vestigial wing. When heterozygous long winged flies were crossed with vestigial winged flies, 192 offsprings were produced. Of these 101 had long wing & 91 had vestigial wings.If an exact Mendelian ratio had been obtained, then the number of each phenotype would have beenO Long winger - 64Vestigial winged - 128O Long winger - 96Vestigial winged - 96O Long winger - 128Vestigial winged - 64O Long winger - 192Vestigial winged - 0 The volume of the dining room is given by (x+6)^3 express the volume in standard form what would you predict would happen in an area of the body where blood was relatively acidic (low ph)? allowing a merchant to increase their prices during an emergency to accommodate increased costs imposed by suppliers still fails to take account of the Need some help with this question if china has a 10% annual growth rate in real gdp and germany has a 2% annual growth rate, china's gdp will double how many years sooner than germany's? FH bisects ZEFG. Find the indicatedangle measures. m/GFH=71. 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