What is the slope?

A) -5/4
B) 5/4
C)-4/5
D) 4/5

The answer is option B

(1, 2) and (-3, -6)

The sample's data values ought to be unrelated to one another. The sample data need to be consistent. Data from the quantitative ordered pair sample should be gathered at random or in a way that is representative of the overall population. The sample's data values ought to be unrelated to one another.

A confidence interval is a much better tool to use if we wish to communicate the level of uncertainty surrounding our point estimate (CI). A confidence interval (CI) is a symmetrical range of values where the results of repeated, related experiments are likely to fall. The middle of this range corresponds to our point estimate.

Confidence intervals, which describe how closely study results match reality or how dependable they are based on statistical theory, are regularly mentioned in scientific publications.

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In order to create three statistics problems, we can use the concepts of mean, median and mode.

The mean of a data set is the sum of all values divided by the number of values.

The median of a data set is the middle term of the set in crescent order (if the set has an even number of values, the median is the mean between the two middle values).

The mode of a data set is the value that repeats the most in the set.

So, for our three questions, let's use the following data set:

The three problems are:

1) Calculate the mean of the data set

2) Calculate the median and the mode of the data set

3) Which one is greater: mean, median or mode?

Answer: 2x

Step-by-step explanation: The answer is 2x, because on the LHS, 9x - 7x = 2x, so the LHS is 2x + 5, if we make the RHS 2x - 7, the equation will become 2x + 5 = 2x - 7, this makes the equation unsolvable

Answer:

The number is -30.

Step-by-step explanation:

Given statement,

→ two thirds of a number is negative 20.

The equation will be,

→ (2/3)x = -20

Now the value of x will be,

→ (2/3)x = -20

→ 2x = (-20) × 3

→ x = (-60)/2

→ [ x = -30 ]

Hence, the value of x is -30.

Answer:

[tex]-30[/tex]

Step-by-step explanation:

Set up the equation where [tex]x[/tex] is the unknown number:

[tex]\frac{2}{3}x = -20[/tex]

Divide both sides by [tex]\frac{2}{3}[/tex]:

[tex]x = -20 \div \frac{2}{3}[/tex]

Rewrite division by a fraction as multiplication by its reciprocal:

[tex]x = -\frac{20}{1} \times \frac{3}{2}[/tex]

Multiply:

[tex]x = -\frac{60}{2}[/tex]

Simplify:

[tex]x = -30[/tex]

The equation for the line of best fit is given by:

y = mx + b

In which m is the slope

They are given by:

Sum of x:

Sum of all values of x.

Sum of y:

Sum of squares of x:

Sum of xy:

Slope:

14 students, so n = 14.

Then

The line of best fit is y = 0.38x + 2.36. This means that for a parents that smokes x cigarettes a day, the child is expect to miss 0.38x + 2.36 days of school during the quarter.

Graphic

y=9-4x/3
you need to isolate y so you divide 3 on both sides.

y=3-4/3x

Answer:

D. 5.

Step-by-step explanation:

Yes.

The linear equation for the given table is y = 10*x - 8.

A general linear equation in the slope-intercept form is:

y = m*x + b

where m is the slope and b is the y-intercept.

The y-intercept is the value of y when x = 0, on the table we can see the pair (0, -8), then the y-intercept is -8.

y = m*x - 8

Using another pair from the table, like (1, 2), we can replace these values in the above linear equation:

2 = m*1 - 8

2 + 8 = m

10 = m

Then the linear equation is:

y = 10*x - 8

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Answer:

$3.86

tell me if im wrong

Answer:

6: your answer is correct

7: C=2.7m+1.95

Step-by-step explanation:

6:

5   15.25

10.   28.95

15.    42.45

20.    55.95

question 7

slope intercept form is y=mx+b

m is slope and b is y intercept

Slope is 2.70 since that is how much we go up for a mile

And 1.95 is y intercept since it is where we start no matter what and we have to add that constant fee every time

y=2.70x+1.95

We change the y to c and the x to m to fit the problem

C=2.70m+1.95

Hopes this helps please mark brainliest

Both the equations are plotted on the graph and they intersect each other on (2, 4).

So, graph the equation as follows:

So plot as:

Therefore, both the equations are plotted on the graph and they intersect each other on (2, 4).

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Answer:

X= -B+2A

Step-by-step explanation:

Hope this helps and sorry if I'm wrong

Answer:

18

Step-by-step explanation:

6lb

*3

6lb*3=18

Solution

Given a trapezoid with the following dimensions

To find the perimeter, P, of the polygon, we add up all the side lengths i.e the formula to find the perimeter, P, of the trapezoid is

Where

Subsitute the values into the formula above

Hence, the perimeter is 46ft

The polynomic function p(x) = - x⁵ - 6 · x⁴ + 32 · x² is shown in the image of the Cartesian plane attached below.

In this question we must write the polynomial function and sketch the resulting curve on a Cartesian plane. We are going to take advantage of the definition of the factor form of the polynomial function:

p(x) = a · Π (x - r), for i = {1, 2, 3, ..., n}

Where:

First, choose the negative lead coefficient:

a = - 1

Second, choose the roots of the polynomic root:

p(x) = - (x + 4)² · (x - 2) · x²

Third, expand the polynomic function:

p(x) = - (x² + 8 · x + 16) · (x - 2) · x²

p(x) = - (x² + 8 · x + 16) · (x³ - 2 · x²)

p(x) = - (x⁵ + 8 · x⁴ + 16 · x³ - 2 · x⁴ - 16 · x³- 32 · x²)

p(x) = - (x⁵ + 6 · x⁴ - 32 · x²)

p(x) = - x⁵ - 6 · x⁴ + 32 · x²

Fourth, sketch the polynomic function with a graphing tool.

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The speed of the river is 7.5 kilometers per hour.

Let the speed of boat in still water = u = 14 km/h

Let the speed of river = v = x km/h

Upstream speed = u - v = 14 - x

Downstream speed = u + v = 14 +x

Distance paddled upstream = [tex]D_{1}[/tex] = 5 km

Distance paddled downstream = [tex]D_{2}[/tex] = 10 km

Time taken (upstream) = [tex]T_{1}[/tex] = [tex]\frac{D_{1} }{u-v}[/tex]

Time taken (downstream) = [tex]T_{2}[/tex] = [tex]\frac{D_{2} }{u+v}[/tex]

According to question,

        [tex]T_{1}[/tex] = [tex]T_{2}[/tex]

      [tex]\frac{D_{1} }{u-v}[/tex] = [tex]\frac{D_{2} }{u+v}[/tex]

     [tex]\frac{5}{14-x}[/tex] = [tex]\frac{10}{14+x}[/tex]

5(14 + x) = 10(14 - x)

   14 + x = 2(14 - x)

   14 + x = 28 - 2x

  x + 2x = 28 - 14

        3x = 14

          x = [tex]\frac{14}{3}[/tex]

          x = 7.5

Hence, Speed of river is 7.5 km/h.

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Answer:

There are many different ways to portray your findings for an individual to view and understand. However, each have their pros and cons. When using a table, all of the specific numbers of your data can clearly be seen and compared with one another without having to analyze a picture. However, since there is no visual correlation that shows the growth and decline of your data, someone who best comprehends visually may not be able to understand your findings. It sis best to vary your sources of displaying information to make sure that it is all able to be understood by any viewer. When using a graph, you have a clear visual representation of the correlation of your variables in your experimentation. This allows the viewer to comprehend your data as a picture and see the change as the picture moves. However, it take further analysis and cross referencing to get specific quantitative data as you are required to read across and down the graph. And finally, when using equations you can show the direct way that the change was caused in your experiment. Each equation has a specific input and output. However, the drawback is the person viewing your data may have to solve the equations themselves to find out your data or simply be confused as equations don’t directly show data, but rather how to find it. It is important to have a varied combination of these things to allow for your data to be throughly understood by anyone viewing it. I hope this helps! :)

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

you can eliminate x with 3 if you multiply the second equation with 3

to get the slope of any straight line, we simply need two points off of it, let's use the points in the picture below

[tex](\stackrel{x_1}{-5}~,~\stackrel{y_1}{3})\qquad (\stackrel{x_2}{0}~,~\stackrel{y_2}{1}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{1}-\stackrel{y1}{3}}}{\underset{run} {\underset{x_2}{0}-\underset{x_1}{(-5)}}} \implies \cfrac{-2}{0 +5} \implies \cfrac{ -2 }{ 5 } \implies {\Large \begin{array}{llll} - \cfrac{2 }{ 5 } \end{array}}[/tex]

Answer:

The second one

Step-by-step explanation:

....is just the equation with the order of the terms re-arranged

Answer:

To subtract fractions, find the LCD and then combine.

Exact Form:

− 67/40

Decimal Form:

− 1.675

Mixed Number Form:

− 1 27/40

Step-by-step explanation:

Please give the brainliest.

Answer:

− 67/40 or  -1 27/40

Step-by-step explanation:

Subtract:

-32/40 - 35/40 =

-67/40

Change into a mixed number (optional):

− 67/40 =

− 1 27/40

A representative sample is one that accurately depicts the a population> This representative sample can be determined through sampling. The examples of sampling methods used are random sampling, stratified random sampling

Answer:

x= 3

y=0

Step-by-step explanation:

y = -x + 3

y = 2x - 6

-x + 3 = 2x -6

3 + 6 = 2x + x

9 = 3x

3 = x

y = -3 + 3

y = 0

Answer:

(3,0)

Step-by-step explanation:

SOLUTION:

(i)

Sine of an angle is complementary to the Cosine of an angle so for both to be the same the angle 90 degrees must be divided into.

(ii)

(iii)

As said earlier sine and cosine of angles are complementary so cosecant and secant of angles are also complementary.

Step-by-step explanation:

2.

angle B is congruent to angle B'.

side BC is congruent to side B'C'.

3.

angle pairs 1 and 3, 2 and 3, 5 and 7 are supplementary (together they have 180°).

4.

please burn this into your brain for all times : the sum of all angles in a triangle is always (yes, always) 180°.

so,

angle J + 17 + 84 = 180

angle J = 180 - 17 - 84 = 79°

5.

and here we use it again.

isoceles means that the triangle has 2 equally long legs. that makes also both base angles equally large.

apex angle + 24 + 24 = 180

apex angle = 180 - 24 - 24 = 132°

In order to express the confidence interval in the form p ± E, first we have to determine the midpoint of the interval, like this:

The value of the error, E, can be calculated by taking the difference between p and the end of the interval, like this:

Then, we can express 0.555 < p < 0.999 in p + E notation as 0.777 ± 0.222

The confidence interval can be written as 0.777 ± 0.222.

The confidence interval 0.555 < p < 0.999 can be expressed in the form of p ± E.

To find the margin of error (E), we can subtract the lower limit (0.555) from the upper limit (0.999) and divide it by 2:

E = (0.999 - 0.555) / 2

E = 0.222

Therefore, the confidence interval 0.555 < p < 0.999 can be expressed as:

p ± E

where p is the point estimate and E is the margin of error. In this case, the point estimate would be the midpoint of the interval, which is the average of the lower and upper limits:

p = (0.555 + 0.999) / 2

p = 0.777

Hence, the confidence interval can be written as 0.777 ± 0.222.

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First, we write out the probability formula:

Total number of tickets = 13

Pr(both Ashley and Matt win) = Pr(Ashley wins) x Pr(Matt wins)

The final answer is 1/169

In order to express our answer as a percentage, we multiply by a 100%

= 1/169 x 100% = 0.592% ( to 3 significant figures)

Answer:

-5(7a+ 6)

Explanation:

Given the expression:

-35a - 30

-35a = -5 * 7 * a

-30 = -5 * 6

You can see from the factors that -5 is common to both

Hence -5 is the GCF

Factoring out -5 from the expression will give;

-5(7a+ 6)

This gives the correct factor

Answer: 9.7 seconds

Step-by-step explanation:

[tex]16t^2=1503\\\\t^2 =\frac{1503}{16}\\\\t=\sqrt{1503/16} \text{ } (t > 0)\\\\t \approx 9.7[/tex]

The first step in solving for a in the equation would be:

1.distribute -4 to a and -5, then:

2a-4a+20=10

Now the next steps in solving for a:

2.Add 2a and -4a :

-2a+20=10

3.Substract 20 to both sides

-2a+20-20=10-20

then:

-2a= -10

4.Finally, divide both sides by -2

then, a=5