a. Make a scatter plot and draw a line of fit on a separate sheet of paper.
b. Use the data from 2009 and 2017 to write the equation of the line of fit in slope-intercept form where x is the number of years since 2005.
Explain your process.

The location of B under the Line Segment Partition is 6.8

What is Line Segment Partition?

A line segment is partitioned when it is divided into equal parts according to a specified ratio. The total number of partitions of the line segment must be equal to the sum of the two values in the ratio.

Given in the question that on a number line AC;

Location of Point A = 4

Location of point C = 11

point B lies between points A and C

So, B divides line AC in the ratio AB: BC = 2:3.

Thus;

BC = 3/5 of the total length of the AC

AB = 2/5 the total length of the AC

Then, total length of AC = 11-4 = 7

BC = 3/5 * 7 = 4.2

AB = 2/5 * 7 = 2.8

Thus, the location of point B is; 4 + 2.8 = 6.8

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that there is no smallest positive rational number is proven below.

What is Rational Number?

Numbers that may be expressed in the form p/q, where p and q are integers and q0, are considered rational numbers. Because fractions cannot have a negative numerator or denominator, they differ from rational numbers in this respect. Because of this, the numerator and denominator of a fraction are whole numbers (denominator 0), unlike in the case of rational numbers, when they are both integers.

So to convert a fractional to reduce form we have to divide by 10 to power how many digits thereafter decimal point, and make sure that numerator or denominator doesn't have commonly divisible.

Let r be any reasonable number.

We can infer that r/2 is rational because r is a rational number.

There is no smallest rational number so we can assume that r/2 r because r/2 is rational.

Hence, proved that here is no smallest positive rational number.

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Recursion is defined as "defining an issue in terms of itself" or "solving a problem via the solution of smaller subproblems (smaller versions of the same problem)". This concept is frequently utilized in algorithms and data structures to tackle difficult issues by partitioning them into simpler ones.

What is recursion, according to this image? a list-based definition of a problem-solving approach. a solution to a problem that does not need using functions. a solution to a problem that is specified by itself. an incrementally specified solution to a problem.

A straightforward illustration of a recursive function is the factorial, which multiplies a number by itself while lowering it slowly. Recursive functions can relate to a wide variety of self-referencing looping operations, such as those where n = n + 1 given an operational range.

Hence recursion is  a problem solution defined in terms of itself.

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The function f, in the slope-intercept form is f= -3x+6.

The slope or gradient of the line is a numerical value used to describe a line's steepness and direction in mathematics. It was first used to describe slope in O'Brien's (1844) and Todhunter's (1888) versions of the equation for a straight line, which are both written as "y = mx + b" and "y = mx + c," respectively. The choice of the letter m for slope has no apparent justification.

Calculating slope involves comparing the "vertical change" to the "horizontal change" between any two points on a line, or any two points. The ratio, which provides the same number for each, is occasionally given as a quotient ("rise over run").

Here given,

For a linear function f,

f(2)=0 and f(4)=-6

So, from the given hint the points are (2, 0) and (4, -6)

Here slope m=(-6-0)/(4-2)

m=-6/2

m= -3

We know that the equation of the function in slope-intercept form is:

f=mx +c

By substituting the point (2, 0) and m= -3 in the function we get,

0= -3(2)+c

c=6

Now, by substituting m= -3 and c=6 in the function, we get

f= -3x+6

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There is sufficient proof to presume that under 77% of messages are spam.

A statistical hypothesis test  is a technique for measurable induction used to conclude whether the information within reach adequately support a specific theory. Speculation testing permits us to offer probabilistic expressions about populace boundaries.

Given the information in the inquiry;

Test size n = 500

x = 361

p₀ = 77% = 0.77

q₀ = 1 - p₀ = 1 - 0.77 = 0.23

p = x/n = 361/500 = 0.722

Speculation;

Null hypothesis H₀ : p ≥ 77% or 0.77

Alternative hypothesis  Hₐ : p ≥ 77% or 0.77

Test Measurement

z = ( p - p₀ )/√( ( p₀ × q₀ )/n )

so we substitute

z = ( 0.722 - 0.77 )/√( ( 0.77 × 0.23 )/500 )

z = - 0.048/√( 0.1771/500 )

z = - 0.048/√0.0003542

z = - 0.048/0.01882

z = - 2.55

so our p-worth will be;

p-value = p( z < - 2.55 ) {from table }

p-value = 0.0054

at 0.05 degree of importance ∝

p-value ( 0.0054 ) is not as much as importance level ∝ ( 0.05 )

Accordingly we Reject Null hypothesis H₀

Thus, there is sufficient proof to presume that under 77% of messages are spam.

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A. The relative frequency of the people that had mechanical issues is 30%.

B. The relative frequency of the people that did not have mechanical issues is 70%.

C. The relative frequencies in (a) and (b) suggest that the new car has been relatively unreliable, as 30% of buyers experienced mechanical issues within the first two years. This suggests that the car has not been built to a high standard of quality, and that buyers should be prepared for potential issues with the car.

Answer:

62 degrees

Step-by-step explanation:

first we find angle C by subtracting 116 from 180

180-116

64 degrees is angle c

Sum of all three angles of a triangle is 180 degrees

(3x-13)+(2x+4)+64=180

5x-9+64=180

5x+55=180

    -55.  -55

5x=125

/5.  /5

x=25

Now we know x we can find angle A

3(25)-13

75-13

62 degrees

Hopes this helps please mark brainliest

Step-by-step explanation:

Give the slope between the points (-5,-2)(-2,-7)

slope = change in y / change in x

slope = (-2 - (-7)) / (-5 - (-2))

slope = ( -2 + 7) / ( -5 + 2)

slope = 5/-3

slope = -5/3 or -1.667

The number of multiple-choice questions is 30.

The number of open-response questions is 6.

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

Example:

2x + 4 - 9 is an equation.

We have,

Number of multiple choice questions = M

Number of open response questions = N

We can make two equations.

M + N = 36 _______(1)

3M + 5N = 120 ______(2)

From (1) we get,

M = 36 - N ______(3)

Putting (3) in (2) we get,

3(36 - N) + 5N = 120

108 - 3N + 5N = 120

2N = 120 - 108

2N = 12

N = 6

Now,

Putting N = 6 in (3) we get,

M = 36 - 6

M = 30

Thus,

The number of multiple-choice questions and open-response questions is 30 and 6.

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Answer:

7

Step-by-step explanation:

hope it helps!

Answer:

7

Step-by-step explanation:

7 over one is a whole number

The price of a box of candy will be $1.25.

Expression in math's is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Given that;

Tiffany gets $25 and 1 box of candy.

And, Todd gets $20 and 5 boxes of candy.

Now,

Since, Tiffany gets $25 and 1 box of candy.

And, Todd gets $20 and 5 boxes of candy.

Let price of box of candy = x

So, We can formulate;

⇒ $25 + x = $20 + 5x

Solve for x as;

⇒ $25 - $20 = 5x - x

⇒ $5 = 4x

⇒ x = 5/4

⇒ x = $1.25

Thus, The price of a box of candy = $1.25

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Answer:

he will score 10 goals in 5 games

a) car A is ahead of car B after 3 minutes.

b) Velocity is the shaded region.

c) the area under curve b is greater than the area under curve a.

a) The total distance  represented by the shaded region A, the area under the graph of v(t).

(c) A is a triangle, so its area is

A =1/2(base)(height)

   = 1/2(5 sec)(80 ft/s) = 200 ft

b) The meaning of area of the shaded region in this problem is: Velocity

Velocity is the directional velocity of a moving object as an indicator of the rate of change of position, observed from a certain frame of reference and measured at a certain time reference (eg 60 km/h northward).

c) The distance travelled will be represented by the area

under the velocity graph.

However,  first convert everything to meters and seconds:

320 km/h = 1000

Now,

60·60 320 m/s ≈ 88.89 m/s.

A =1/2(base)(height)

= 1/2(30 sec)(88.89 m/s) ≈ 1333.3m

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Answer:

If the first box of apples weighs 12 kilograms more than the second box, then the weight of the second box is 54 - 12 = <<54-12=42>>42 kilograms.

The 15 percent tip on a dinner bill of 48.71 dollars is 7.3 dollars

The dinner bill is 48.71 dollars. Let's estimate a 15 percent tip on the dinner bill as follows:

In mathematics, a percentage is a number or ratio that can be expressed as a fraction of 100.

In other words, Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".

Therefore, let's estimate the 15% tip on the dinner bill of 48.71 dollars.

dinner tip = 15% of 48.71

dinner tip =  15 / 100 × 48.71

Hence, the estimated 15% tips of the dinner bill is as follows:

dinner tip = 7.3065 dollars

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Answer: for the graphs if it crosses the same line twice if you draw a line down the top to bottom it is not a function and if the x repeats for the table and equals something different it is not a function

Step-by-step explanation

for tables (5,8) (6,9) (5,2) (1,5) this would not be a function because 5 equals two different things

Answer:

x≤−32

Step-by-step explanation:

The terms 4t and 120 represents the cost of 4 cups of tea and total cost respectively.

A system of equation is defined as the group of equations having the same degree and same number of variables.

The given system can have one or more than one or no solutions at all.

The system having no solutions are called inconsistent while the ones having them are called consistent.

The given problem can be solved as follows,

Suppose the number of cups of tea and lemonade be t and l respectively.

Then, the following equations can be formed for the given case,

The equation for total cost is given as,

4t + 2l = 120                 (1)

And, the equation for the number of cups is given as,

l = 5t                             (2)

Now, the term 4t in equation (1) represents the cost for 4 cups of tea and 120 represents the total cost.

Hence, the given terms represent the cost of 4 cups of tea and the total cost of tea and lemonade.

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The number 15.031i is an Imaginary number.

What is a complex number?

Complex numbers are those that are expressed as a + ib, where a and b are actual numbers and i is a fictitious number called a "iota." i has the value (√-1).

What is a real number?

A real number is a number that can be used to represent a continuous one-dimensional quantity in mathematics, such as a temperature, duration, or distance. Continuous in this context suggests that values may vary by arbitrary little amounts. An infinite decimal expansion can nearly always represent any real number.

Given number is 15.031i.

Iota is denoted by i which is an imaginary number.

Since no real number is not added with given number, it is not a real number.

Since iota presents in the given number, it is an imaginary number.

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P-value = 0.0384

As P-value < 0.05, reject the null hypothesis.

A statistic (a number obtained from the sample) used in statistical hypothesis testing is known as a test statistic. Usually, a hypothesis test is described in words.

A test statistic is a figure obtained from a statistical analysis. It explains how distant your observed data is from the null hypothesis, which states that there is no correlation between the variables or distinction between the sample groups.

The alternative and null hypotheses are listed below.

Lack of hypothesis H0: μ = 13

Ha: 13 Alternative Hypothesis

Statistical test, z = (xbar - mu)/(sigma/sqrt(n))

z = (11 - 13)/(8/sqrt(50))

z = -1.77

Region of Rejection

For α= 0.05, this is a left-tailed test.

Z has a critical value of -1.645.

Therefore, if z -1.645, reject H0 and accept the null hypothesis.

P-value Approach

P-value = 0.0384

As P-value < 0.05, reject the null hypothesis

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Assuming simple interest rate, to reach the account value of 28500 dollars, it needs 27.2 years.

Assuming simple interest rate, the formula for the future value is:

FV = PV (1 + r x n)

Where:

PV = present value

r = interest rate per period

n = number of periods

Parameters given in the problem,

r = 8.5% = 0.085

PV = 8600

FV = 28500

Plug these parameters into the formula:

28500 = 8600 (1 + 0.085 x n)

1 + 0.085 x n = 3.313

0.085 x n = 2.313

n = 27.2

Hence, it needs 27.2 years to reach 28500 dollars.

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Answer:

to write (-2)^6 as repeated addition, we can write it as -2 + -2 + -2 + -2 + -2 + -2 + -2. When we evaluate this expression, we get -128. Therefore, the answer is negative

Answer: 7.7%

Step-by-step explanation:

So the answer is 7.7

To find the percent error, start by listing the key information from the problem.

Greta's scale shows the package weighing 3 pounds.

The scale at the post office shows the package weighing 3.25 pounds.

First, find the amount of error. It is the difference between 3.25 and 3, which is 0.25.

Now, use the formula to find the percent error.

percent error =

amount of error

correct amount = 0.25

3.25

= 0.0769…

You can rewrite this as a percent rounded to the tenths place, 7.7%. So, the percent error for Greta's scale measurement is about 7.7

Use / for the fraction bar if necessary. if p − 1 is a factor of p^4 + p^2 + p - k , the value of k is 1 + p^2 + p^4.

A fraction bar is a graphic representation of fractions that is useful for fraction comparison and fraction operations. Part-to-whole representational models like fraction bars or fraction strips are used. One unit out of a whole is represented by each segment of a fraction bar.

To comprehend the value of a fraction, utilize fraction bars. They can also be utilized for comparing fractions and, subsequently, adding and removing fractions. The ability to visualize a fraction bar for just any fraction is crucial.

p - 1 = p^4 + p^2 + p - k

k = 1 + p^2 + p^4

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The dimensions of the rectangular field is 15 meters long and 14 meters wide.

A rectangle is a two-dimensional figure that has 2 pair of parallel sides that are of the same length. The corners made by these sides are right triangles.

Let x = length of the rectangular field

y = width of the rectangular field

If the area of the land is 210 square meters, then the product of its length and width is equal to 210 square meters.

A = l x w

210 = xy

x = 210/y

Serenity has 58 m of fencing for the perimeter of the rectangular field.. Hence,

P = 2l + 2w

58 = 2x + 2y

Substitute the expression of x and solve for y.

58 = 2x + 2y

58 = 2(210/y) + 2y

58 = 420/y + 2y

Multiply both sides by y and divide by 2.

29y = 210 + y²

y² - 29y + 210 = 0

(y - 14)(y - 15) = 0

y = 14 ; y = 15

Hence, y = 14.

Substitute the value of y and solve for x.

x = 210/y

x = 210/14

x = 15

Hence, the length and width of the field is 15 meters and 14 meters, respectively.

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A: he percent of respondents who do not like hamburgers and burritos both = 16.09 %

B: Marginal relative frequency of all customers that like hamburgers= 0.65

C: Those who like Hamburgers but not burritos.

What is the percentage?

It's the ratio of two integers stated as a fraction of a hundred parts. It is a metric for comparing two sets of data, and it is expressed as a percentage using the percent symbol.

                         Like Hamburgers ↓  Does Not Like Hamburgers↓    Total↓

Likes burritos →                 39                           38                                   77

Does not like burritos →    95                           33                                 128

Total →                                134                           71                                 205

So, according to the above table, a total of 77 customers like burritos, out of which 38 do not like hamburgers, hence, the remaining 77-38= 39 like Hamburgers.

A total of 128 customers do not like burritos, out of which 95 do like hamburgers, hence, the remaining  128 - 95 = 33 do not like Hamburgers.

A total of 134 customers like hamburgers, but 71 do not like it, hence, the total respondents are 205.

Part A: The percent of respondents who do not like hamburgers and burritos both

There are 33 such respondents.  

Hence, percentage = (033/205) *100 = 16.09 %

Part B: Marginal relative frequency of all customers that like hamburgers

It will be the ratio of the sum of the customers that like hamburgers to the total number of respondents

Hence, ratio  134/205 = 0.65

Part C: The data point that has the strongest association of its two factors.

For this, we need to find the ratio of all the four data with the total.

Those who like Hamburgers and burritos = 39/134 = 0.29

Those who like Hamburgers but not burritos = 95/134 = 0.71

Those who like burritos but not Hamburgers = 38/71 = 0.53

Those who do not like burritos or Hamburgers = 33/71 = 0.47

So, the answer is those who like Hamburgers but not burritos.

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Answer:

Step-by-step explanation:

Answer:

1/ 42% increased

2/ 62%

Step-by-step explanation:

Let's find the answer to the first question

Take 355 divided by 250, then times 100% = 142%

142% - 100% = 42% increase

So the percent increase is 42%

Now let's find the answer to the second question

First, find the total cost by 355 + 50 = $405

Take 405 divided by 250, then times 100% = 162%

162% - 100% = 62%

It increases by 62% if the airline charges ann additional $50 baggage fee!

After solving for angles, the value of p in the given angles is 44°.

An angle is formed when two straight lines or rays meet at a single terminal.

The place where two points converge is known as an angle's vertex.

The name "angel" comes from the Latin word "angulus," which means "corner."

Angles are also produced when two planes intersect.

These are what are known as dihedral angles.

So, we know that ∠CAD = 90°.

And since ∠CAB is s straight angle. Then,

∠CAD + ∠DAB = 180

90 + p + 46 = 180

p + 136 = 180

p = 180 - 136

p = 44°

Therefore, after solving for angles, the value of p in the given angles is 44°.

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There are total 1680 ways to arrange 4 magazines in a row of 8 choices

What is Permutation?

The term permutation refers to a mathematical computation of the number of possible arrangements of a given collection. Simply said, a permutation is a term that defines the amount of different ways something may be organised or arranged. The order of the arrangement is important in permutations.

Solution:

Since, order of the arrangement matter too

we will use Permutation

Total Ways of Arrangement = 8P4

Total Ways of Arrangement = 8!/4!

Total Ways of Arrangement = 8*7*6*5*4!/4!

Total Ways of Arrangement = 1680 ways

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