The state sales tax rate in North Carolina is 4.5% estimate the state sales tax on a model of the wright brothers’ airplane that costs $139.99.
Please show work

I think it is 2/9ths? Look it up on a calculator to check

The mean price of one of Henry's stamp is $34.7.

The mean number of plays is 6.33.

The mean length of phone call is 11.79.

Mean is the average of a set of numbers.

Mean = ∑(midpoint x frequency) / frequency

Midpoint = (upper boundary + lower boundary) / 2

Stamp price   Frequency   Midpoint                   (Midpoint x frequency)

20 - 26               24            (20 + 26) / 2 = 23                 552

27 - 33                39            (27 + 33) / 2 = 30                  1170

34 - 40                50            (34 + 40) / 2 = 37                   1850

41 - 47                  37            (41 + 47) / 2 = 44                    1628

Sum                     150                                                          5200

Mean = 5200 / 150 = 34.7

Number of weeks   Frequency      Midpoint               Midpoint x Frequency

1 - 3                              4                 (1 + 3) / 2 = 2                        8

4 - 6                             27               (4 + 6) / 2 = 5                      135

7 - 9                             16                (7 + 9) / 2 = 8                     128

10 - 12                            4               (10 + 12) / 2 = 11                  44

13 - 15                             1               (13 + 15) / 2 = 14                  14

Sum                               52                                                         329

Mean = 329 / 52 = 6.33

Length of call   Frequency  Midpoint                        Midpoint x frequency

1 - 4                     3                 (1 + 4) / 2 = 2.5                    7.5

5 - 8                    32              (5 + 8) / 2 = 6.5                     208

9 - 12                   30              (9 + 12) / 2 = 10.5                   315

13 - 16                  45              (13 + 16) / 2 = 14.5                   652.50

17 - 20                  17               (17 + 20) / 2 = 18.5                  314.50

Sum                     127                                                              1,497.50

Mean = 1497.50 / 127 = 11.79

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The factorization of the expression is -3(1+3z+7y+0.8)

Factorisation of an algebraic expression means writing the given expression as a product of its factors. These factors can be numbers, variables, or an algebraic expression.

To the factor a number means to break it up into numbers that can be multiplied to get the original number.

in the expression, -3 −9z−21y−2.4, it is discovered that -3 is a common factor in all the terms.

Therefore dividing all the terms by -3 and bring -3 out of parentheses we have -3(1+3z+7y+0.8)

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Another advantage of using Anova is that it arranges the means so the significant differences can be located and interpreted easily.

The ANOVA test is a type of statistical test used to determine whether there is a statistically significant difference between two or more categorical groups by testing mean differences using variance.

Another important part of the ANOVA is the splitting of the independent variables into two or more groups.

The assumptions for the ANOVA test are the same as those for general parametric tests.

Advantages of ANOVA:

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Runs scored by Willie Mays is given by the linear equation y = 2x+58.

A linear equation is an algebraic equation which is in the form y=mx+b, where m is said to be the slope and b is the y-intercept, and only a constant and a first-order (linear) term are included.

The variables in the preceding equation are x and y, and it is commonly referred to as a "linear equation of two variables."

Let the runs scored by Roger be x.

According to the question, Willie Mays hit 58 more than double the number of home runs Roger hit.

Runs scored by Willie Mays = 2x+58

Let the runs scored by Willie May be y.

Then, y = 2x+58.

Hence, the runs scored by Willie Mays is given by the linear equation
y = 2x+58.

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Answer:

It is a polynomial, the standard form is -1.6[tex]x^{2}[/tex]-5x+7, and the degree is 2.

Step-by-step explanation:

1. Polynomials can be positive, negative, a zero, a whole number, decimals, or a fraction.

2. When writing a polynomial in standard form arrange the terms from least degree to greatest degree.

3. In this instance the degree of the polynomial is 2 because the term with the highest degree only has x to the second power.

;)

To write our number as a fraction, the order of the steps is:

First, we define our number:

x = 0.1717...

So we start with the step 3.

Now notice that there are two repeating decimals, so we need to multiply both sides by 100 (as many zeros as repeating decimals)

100*x = 10*0.1717... = 17.1717...

This is step 5.

Now we can subtract the original number in both sides so we remove the repeating decimals:

100*x - 0.1717... = 17.1717... - 0.1717...

99*x = 17

These are steps 4 and 2.

Finally, we divide both sides by 99 to get:

x = 17/99

Which is step 1.

And that is our number written as a fraction.

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The sum of the measures of the exterior angles of a triangle, one at each vertex, is 360° and it proved.

Exterior angle

The the angle that is formed with one side and the adjacent extended side of a triangle is known as exterior angle.

Given,

Here we use linear pairs to find the sum of all the angles labeled in the triangle.

And then use what you know about the interior angles of a triangle to show that the sum of the measures of the exterior angles of a triangle, one at each vertex, is 360°.

While we looking into the following figure, we can see that R and Y are the interior and exterior angles of the triangle respectively.

Therefore, here the angles Y and R form a linear pair.

So, we can written it as,

=> Y + R = 180°

Then the value of y is

=> Y = 180° - R

Therefore, when we calculate the value of the full triangle, then we get

=> (Y + R) + (Y + R) + (Y + R) = 180° + 180° + 180°

When we simplify this one,

=> 3Y + 3R = 540° --------- (1)

We already know that,  the sum of interior angles of the triangle is as follows,

=> R + R + R = 180°

By using angle sum property of a triangle,

WE can written this like the following,

=> 3R = 180° --------- (2)

Now, substituting the value from equation(2) in equation(1) we get,

Then,

=> 3Y + 180° = 540°

=> 3Y = 540° - 180°

=> 3Y = 360°

Therefore, the sum of exterior angles = 360°

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The fraction of the teacups that are either indigo or teal in Cassie's Tea Shop are 1/2.

The fraction of teacups in Cassie’s Tea Shop which will either be indigo or teal can be found by adding the fractions of the tea cups which are indigo, to those which are teal.

Fraction of teacups which are indigo = 1/12

Fraction of teacups which are teal = 5/12

The fraction of teacups which are indigo or teal is:

= 1 / 12 + 5 / 12

= 6 / 12

In the simplest form, this is:

= (6 / 6) / (12 / 6)

= 1 / 2

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Answer: The answer to this problem is 1/2.

Step-by-step explanation:

The first thing you do is to add 1/12 and 5/12 together.

1/2 + 5/12 = 6/12

Then you simplify 6/12 to get the answer.

6/12 = 1/2

6/6 = 1

12/6 = 2

This is how you get the answer!

By using the equation of the line and the perpendicular line relationship, the equation of the perpendicular line y = (8 / 3) · x - 5

Mathematically speaking, lines are represented by equations of the form:

y = m · x + b

Where:

And two lines perpendicular to each other observe the following relationship:

m · m' = - 1

Where:

First, determine the slope of the perpendicular line by perpendicular line relationship:

m = - 3 / 8

m' = - 1 / (- 3 / 8)

m' = 8 / 3

Second, calculate the intercept of perpendicular line by the equation of the line:

b = y - m · x

b = 3 - (8 / 3) · 3

b = 3 - 8

b = - 5

Third, write the equation of the perpendicular line:

y = (8 / 3) · x - 5

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The exact value of CSC(COS^-1(-5/8)) is 8/[tex]\sqrt{39}[/tex].

Given:

= CSC(COS^-1(-5/8))

= 1/sin(cos^-1(-5/8)

we know identity sin(cos^-1(x)) = [tex]\sqrt{1-x^{2} }[/tex]

= 1/[tex]\sqrt{1-(-5/8)^{2} }[/tex]

= 1/[tex]\sqrt{64-25/64 }[/tex]

= 1/[tex]\sqrt{39}[/tex]/8

= 8/[tex]\sqrt{39}[/tex].

Therefore the value of CSC(COS^-1(-5/8)) is 8/[tex]\sqrt{39}[/tex].

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Their covariance is -0.0151

Given;

The expected return on security x is 9%, whereas the standard deviation is 18%. The expected return on security y is 12%, and the standard deviation is 21%. If the correlation between the two securities is 0.4

Security X:

Expected return E(Rx) = 9% = 0.09

Standard deviation (σx) = 18% = 0.18

Security Y:

Expected return E(Ry) = 12% = 0.12

Standard deviation (σy) = 21% = 0.21

and

Corr(X,Y) = -0.4

We know that,

Corr(X,Y) = Cov(X,Y)/ σx*σy

Substituting the above-given values, we get;

-0.4 = Cov(X,Y)/ 0.18*0.21

-0.4 = Cov(X,Y)/ 0.0378

Cov(X,Y) = -0.4*0.0378

Cov(X,Y) = -0.0151

Therefore, the covariance is -0.0151.

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The measure of each of the missing angles is m<1 = 40°, m<2 = 61°, m<3 = 119°, m<4 = 61°, m<5 = 58°, m<6 = 122°, m<7 = 58°, m<8 = 82° and m<9 = 98°

To solve this problem, we need some angle geometry knowledge:

Since the sum of angles on a straight is 180°. Thus:

m<1 + 82° + 58° = 180°

m<1 = 180° -82° - 58° = 40°

The sum of angles on a triangle is 180°:

m<2 + 58° + 61° = 180°

m<2 = 180° - 58° - 61° = 61°

m<2 + m<3 = 180° (angles on a straight )

61°+ m<3 = 180°

m<3 = 180°-61° = 119°

m<4 = m<2 = 61° (alternate angles)

m<5 + m<4 + 61 = 180° (angles on a straight )

m<5 + 61° + 61 = 180°

m<5 = 180°- 61°-61° = 58°

m<5 + m<6 =  180° (angles on a straight )

58°+ m<6 =  180°

m<6 =  180°-58° = 122°

m<7 =  58°  (alternate angles)

m<1 + m<7 +m<8 = 180° (angles on a triangle )

40+58°+m<8 = 180°

m<8 = 180°-40-58° = 82°

m<8+m<9 = 180° (angles on a straight )

82+m<9 = 180°

m<9 = 180°-82° = 98°

The measure of the missing angles m<1, m<2, m<3, m<4, m<5°, m<6, m<7, m<8 and m<9 are 40°, 61°, 119°, 61°, 58°, 122°, 58°, 82° and 98° respectively

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The equation of the polynomial equation with a fifth degree is P(x) = (x  + 4)³(x - 4)²

The given parameters are

The sum of multiplicities of the polynomial equation must be equal to the degree.

This means that the multiplicity of the zero -4 is 3

The equation of the polynomial is then calculated as

P(x) = (x - zero)^multiplicity

Substitute the known values in the above equation, so, we have the following representation

P(x) = (x - (-4))³ * (x - 4)²

Open the inner brackets

P(x) = (x  + 4)³ * (x - 4)²

This gives

P(x) = (x  + 4)³(x - 4)²

Hence, the equation is P(x) = (x  + 4)³(x - 4)²

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a) Domain={2,3,4,5,6}, Range={0,1,2,3,4}

b)Domain={-3,-1,1,3,4}, Range={1,3,-2,2,6}

What are the domain and range of a function?

The range of values that we are permitted to enter into our function is known as the domain of a function. In a function like f, this set represents the x values (x). The collection of values that a function can take on is known as its range. The values that the function outputs when we enter an x value are in this set.

a) Domain is the set of x values:

 x={2,3,4,5,6}

 The range is the set of y values:

  y={0,1,2,3,4}

b) Domain is the set of x values:

 x={-3,-1,1,3,4}

 The range is the set of y values:

  y={1,3,-2,2,6}

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Answer:

should be
38 = 9x

Step-by-step explanation

multiply both sides with the least common denominator of the denominator of the fraction (the number below the line).
of the numbers 4 and 6, the least common denominator is 12.
so multiply both sides of the equation by 12.
you will have
12 * (4 - 3/4 x) = 12 * 5/6
simplify and you will get
48 - 9 x = 10

and you can even more simplify it to 9x = 38 or 38 = 9x

Answer:

Below

Step-by-step explanation:

See diagram below....you are looking for 'x' in the right triangle

Use Pythagorean Theorem :

5^2 + x^2 = 13 ^2

x ^2 = 13^2 - 5^2

x ^2 = 144

x = 12 m

For the quadratic equation other solution is given by :

x = 4-5i  other solution is x = 4 + 5i

x= 5 + 4i other solution is x = 5 -4i

x = -5 -4i other solution is x = -5 + 4i

x = -4 + 5i other solution is x = -4 -5i

As given in the question,

Number of quadratic equations mentioned = 4

Given one solution for each quadratic equation is given by:

x = 4-5i

x= 5 + 4i

x = -5 -4i

x = -4 + 5i

In standard form:

if the one of the solution of quadratic equation is in complex form x + iy then other solution is given by its conjugate x - iy.

Hence,

Other solution are given by :

x = 4-5i  other solution is given by its conjugate x = 4 + 5i

x= 5 + 4i other solution is given by its conjugate x = 5 -4i

x = -5 -4i other solution is given by its conjugate x = -5 + 4i

x = -4 + 5i other solution is given by its conjugate x = -4 -5i

Therefore, for the quadratic equation other solution is given by :

x = 4-5i  other solution is x = 4 + 5i

x= 5 + 4i other solution is x = 5 -4i

x = -5 -4i other solution is x = -5 + 4i

x = -4 + 5i other solution is x = -4 -5i

The complete question is:

One solution each is given for four quadratic equations. Assuming that each quadratic equation has two solutions, what is the second solution for each equation?.

x = 4-5i

x= 5 + 4i

x = -5 -4i

x = -4 + 5i

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Answer:

319 would be the sum

Step-by-step explanation:

the park is open for 8 hours.

Answer:

k = 5

Step-by-step explanation:

substitute the values of x into 3x + k and equate with the corresponding value, that is

x = 1

3(1) + k = 8

3 + k = 8 ( subtract 3 from both sides )

k = 5

x = 3

3(3) + k = 14

9 + k = 14 ( subtract 9 from both sides )

k = 5

x = 5

3(5) + k = 20

15 + k = 20 ( subtract 15 from both sides )

k = 5

the value of k is therefore 5

(E) None of these equations of a line is parallel to the equation [-2y = 4 - 2x] and passes through the point (-5. 9).

A straight line's general equation is y = MX + c, where m denotes the gradient and y = c denotes the point at which the line crosses the y-axis.

On the y-axis, this value c is referred to as the intercept.

Y = MX + c represents the equation of a straight line with gradient m and intercept c on the y-axis.

So, first plot the equation [-2y = 4 - 2x] on the graph:

Now, plot all the equations on the graph.

We can now check which equation is parallel to [-2y = 4 - 2x] and passing through the point (-5. 9).

According to the plotting, we can say that no equation is parallel to the equation [-2y = 4 - 2x] and passes through the point (-5. 9).

Therefore, (E) none of these equations of a line is parallel to the equation [-2y = 4 - 2x] and passes through the point (-5. 9).

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Complete question:

Find the equation of a line parallel to -2y = 4 - 2x that passes through the point.

(-5,9).

A. y=x-2

B. y=-x+14

C. 2x + 2y = 8

D. 2x - 2y = -28

E. None of these

Answer:

Both are correct. Gavin just took more steps to get his answer.

Step-by-step explanation:

Briana's work:

20x23=460

522-460=92

4x23=92

92-92=0

24x23=552

Gavin's work:

10 x 23=230

552-230=322

10x23=230

322-230=92

2x23=46

92-46=46

46-46=0

24x23=552.

Hope this helps :)

Researchers developed a blood test which is quite fair. It gives a positive reaction of 97% people who have that disease and 5% who don't have that disease.

Therefore, the Probability of Type I error if the new blood test is used is 0.025.

H₀ : "the individual does not have the disease"

(a) Probability of Type I error of rejecting  when  is true =

Probability of concluding the individual has the disease when in fact the individual does not have the disease = 0.025 because the blood test erroneously gives a positive reaction in 2.5% of the people who do not have the disease.

(b) Probability of Type II error = Probability of fail to reject  when  is true= Probability of concluding the individual does not have the disease when in fact he has the disease = 0.05 because the blood test gives a positive reaction in 97% of the people who have the disease, this implies that the test gives a negative reaction in 5% of the people who have the disease.

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Normal Distribution or central tendency is a bell-shaped curve that is produced by many measurements.

The graphical representation of a normal probability distribution, whose underlying standard deviations from the mean form the curved bell shape, is referred to as having a "bell curve." The variability of data dispersion, in a set of provided values around the mean, is measured using a standard deviation. The highest point on the bell curve is the mean, which is the average of all the data points in the data set or sequence.

A bell-shaped normal distribution graph is referred to as a bell curve.

At the peak of the curve, the mean, mode, and median of the collected data are shown.

The standard deviation of the bell curve reveals how pronounced the bell curve is around the mean.

Bell curves (normal distributions) are extensively used in statistics, particularly when analyzing financial and economic data.

Hence Normal Distribution is the basic concept of bell shaped curve.

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Answer:

0.31

Step-by-step explanation:

1 1/4 - 1/3 - 3/5 = 19/60

≅ 0.3166667

Yusuf remaining observations, considering the statistical measures, are given as follows:

64, 73, 80.

There are four statistical measures used in this problem, which are:

The mode is the observation that appears the most times, hence one of the remaining observations is of 80.

The median is the middle value of the data-set, which is the value of which 50% of the measures are less than and 50% of the measures are greater than.

In this problem, the data-set has an even cardinality, hence the median is the mean of the 4th and of the 5th element, hence, considering the median of 74, the missing element is given as follows:

(x + 75)/2 = 74.

x + 75 = 148

x = 73.

The range is the difference between the largest value and the smallest value in the data-set.

Considering the range of 16 and the highest value of 80, the remaining value is given as follows:

80 - x = 16

x = 80 - 16

x = 64.

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Answer:

10.49

Step-by-step explanation:

We should solve this by subtracting the total amount of fuel minus the gallons left to find the gallons used.

In other words:

Subtract the total amount of fuel minus the gallons left

[tex]15.04 -4.9[/tex]

Answer:

[tex]10.49[/tex]

I hope this answers your question :)

Note: Make sure you line up the decimal places!!