Find the slope of a line passing through (2, -1) and (-6, -1).

Answers

Answer 1
The slope is: -0/8
Use the formula to find the slope

Related Questions

Some transportation experts claim that it is the variability of speeds, rather than the level of speeds, that is a critical factor in determining the likelihood of an accident occurring (Update, Virginia Department of Transportation, Winter 2000). One of the experts claims that driving conditions are dangerous if the variance of speeds exceeds 75 (mph)2. On a heavily traveled highway, a random sample of 55 cars revealed a mean and a variance of speeds of 62.5 mph and 94.7(mph)2, respectively. (You may find it useful to reference the appropriate table: chi-square table or F table)
1. Set up the competing hypothesis to test wxpert,s claim.
2. At the 5% significance level find the critical value and state the decision rule.
3. Can you conclude that driving conditions are dangerous on this highway? explain.

Answers

Answer:

Explained below.

Step-by-step explanation:

The claim made by an expert is that driving conditions are dangerous if the variance of speeds exceeds 75 (mph)².

(1)

The hypothesis for both the test can be defined as:

H₀: The variance of speeds does not exceeds 75 (mph)², i.e. σ² ≤ 75.

Hₐ: The variance of speeds exceeds 75 (mph)², i.e. σ² > 75.

(2)

A Chi-square test will be used to perform the test.

The significance level of the test is, α = 0.05.

The degrees of freedom of the test is,

df = n - 1 = 55 - 1 = 54

Compute the critical value as follows:

[tex]\chi^{2}_{\alpha, (n-1)}=\chi^{2}_{0.05, 54}=72.153[/tex]

Decision rule:

If the test statistic value is more than the critical value then the null hypothesis will be rejected and vice-versa.

(3)

Compute the test statistic as follows:

[tex]\chi^{2}=\frac{(n-1)\times s^{2}}{\sigma^{2}}[/tex]

    [tex]=\frac{(55-1)\times 94.7}{75}\\\\=68.184[/tex]

The test statistic value is, 68.184.

Decision:

[tex]cal.\chi^{2}=68.184<\chi^{2}_{0.05,54}=72.153[/tex]

The null hypothesis will not be rejected at 5% level of significance.

Conclusion:

The variance of speeds does not exceeds 75 (mph)². Thus, concluding that driving conditions are not dangerous on this highway.

Question 1
Select ALL expressions that are equivalent to 4x + 2(2x - 5) - (3 - 5x).
A
82 - 10 - 3 - 52
B
3.2 - 13
С
13 – 13
82 - 10 - 3 + 5%
E
83 - 5 - 3 - 5x

Answers

Answer:

B

Step-by-step explanation:

I think I know the answer but I just want to double check.

Answers

D would be the correct answer

Answer:

D

Step-by-step explanation:

I think it's same with what ur thinking

out of 50 students,34 joined the journalism class and 25 joined the robotics club.If 16 students joined both clubs,how many students are in neither club​

Answers

7 students are in neither club

34+25= 59
59-16=43
43-50=7

The pilot of an airplane flying at an elevation of 5000 feet sights two towers that are 300 feet apart. If the angle of depression to the tower closer to him is 30, determine the angle of depression to the second tower.

Answers

Answer: 29.2 degree

Step-by-step explanation:

Given data:

Elevation of the pilot = 50,000 feet

Elevation of the two towers = 300 feet apart.

Depression of closer tower = 30

Solution:

The angle of depression to the second tower is x

tanx = 5000/(5000*√(3)+300)

x=29.2

Therefore the angle of depression of the second tower is at 29.2 degree

Answer:

29.2°

Step-by-step explanation:

From diagram (b)

Tan θ= opp/adj

Where θ = 30°

opp = 5000ft

adj = ?

tan 30° = 5000/x

x tan30° = 5000

x = 5000/tan 30

x = 5000/0.577

x = 8665.5ft

From diagram c

tan θ = opp/adj

Where θ = ?

opp = 5000

adj = 300+x

x= 8665.5

tan θ = 5000/300+8665.5

tan θ = 5000/8965.5

tan θ = 0.55769

θ = arch tan 0.55769

θ = 29.147

θ= 29.2°

Michelle can type 120 words in 3 minutes. How many words can she type in 1 minute at this rate? A. 30 words B. 40 words C. 50 words D. 60 words


pls answer i cant figure it out pls don't type random things for points

Answers

Answer:

B

Step-by-step explanation:

THe answer is b because you have to divide 3 by whatever the answer is so just divide all answers until you get one thats 120 so b

Answer:

B.40 words

Step-by-step explanation:

120÷3=40

40×3=120

I mark as brainliest ​

Answers

Answer:

.1

Step-by-step explanation:

Answer:

Point Q is represented by the ordered pair (-2,9)

The linear equation has 5(x + 2) = 5x + 2 A) no solution. B) one solution. C) two solutions. D) infinitely many solutions

Answers

it's A it has no solution

the ratio of lily's programing to tina's programing speed is 3:5. lily can write six programs per day. if lily and tina work together to write 240 programs, how many days are needed

Answers

Answer:

which principle prevents a brach from abusing  its power

Step-by-step explanation:

Dave cleans pools at a constant rate of 2/5 pools per hr what is the ratio of the number of pools he cleans to the number of hours
How many pools can dave clean in 20 hrs

Answers

Answer:

For every 1 hour he cleans 2/5 pools, so the ratio of pools to hours is 0.4:1

In 20 hours, Dave can clean 2/5 • 20 = 8 pools.

What is the quotient of (-55) divide by 5?

Answers

Answer:

11

Step-by-step explanation:

Answer:✨

-11

✨Step-by-step explanation:✨

-55 ÷ 5 = -11

(Just take the negative sign away and divide)

Three times a number minus 5 plus the same number

Answers

Answer:

15

Step-by-step explanation:

( 3+√3 ) (2+√2) simplify​

Answers

(3+ √3) (2+ √2)

=> 3(2+ √2) + √3 (2+ √2)

=> 6+3√2+2√3+ √6 [Answer]

6(5−8v)+12=−54 can you help me with this?

Answers

Answer:

v=2

Step-by-step explanation:

6(5-8v)+12=-54

6(5-8v)=-66

(6(5-8v))/6=-66/6

5-8v=-11

-8v=-11-5

-8v=-16

6(5-8V)+12=-54
6(5-8V)=-66
(6(5-8V))/6=-66/6
5-8V=-11
-8V=-11-5
-8V=-16
V=2

If you spend 540 minutes per year waiting in lines, how many hours is this?

Answers

Answer:

540 minutes in hours =540/60

=9 hours

The time 540 minutes in hours will be 9 hours.

What is an expression?

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that the time is 540 minutes. The value of time in hours will be calculated as,

The time of 60 minutes is equal to 1 hour. So divide the time 540 minutes by 60 minutes.

Time = 540 / 60

Time = 9 hours

To know more about an expression follow

https://brainly.com/question/12053230

#SPJ2

The mayor of a town saw an article that claimed the national unemployment rate is 8%. They wondered if this held true in their town, so they took a sample of 200 residents to test H_0 : p = 0.08 versus H_a : p != 0.08, where p is the proportion of residents in the town that are unemployed. The sample included 22 residents who were unemployed.Identify the correct test statistic for this significance test to one decimal place.

Answers

Answer:

Z = [tex]\frac{0.11-0.08}{\sqrt{0.08*0.92/200} }[/tex]   = 1.6  

we reject the Null hypothesis

Step-by-step explanation:

The correct test statistic

Assume :

Null Hypothesis :  H_0 : p = 0.08

Alternative hypothesis : H_a : p ≠ 0.08

p = proportion of residents that are unemployed

x = unemployed residents = 22

n = sample size = 200

To get the sample of the population that is unemployed we use this equation

[tex]p = \frac{X}{n}[/tex]  =  22 / 200   = 0.11

now we apply the test of of significance of single proportion

= Z = [tex]\frac{p - P}{\sqrt{pq/n} }[/tex]

therefore Z = [tex]\frac{0.11-0.08}{\sqrt{0.08*0.92/200} }[/tex]   = 1.6

Therefore we reject the Null hypothesis

Testing the hypothesis, it is found that the test statistic used is z = 1.6.

At the null hypothesis, it is tested if the proportion is of 8%, that is:

[tex]H_0: p = 0.08[/tex]

At the alternative hypothesis, it is tested if the proportion is different of 8%, that is:

[tex]H_1: p \neq 0.08[/tex]

The test statistic is given by:

[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]

In which:

[tex]\overline{p}[/tex] is the sample proportion. p is the proportion tested at the null hypothesis. n is the sample size.

For this problem, the parameters are: [tex]p = 0.08, n = 200, \overline{p} = \frac{22}{200} = 0.11[/tex]

Hence, the value of the test statistic is:

[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]

[tex]z = \frac{0.11 - 0.08}{\sqrt{\frac{0.08(0.92)}{200}}}[/tex]

[tex]z = 1.6[/tex]

A similar problem is given at https://brainly.com/question/24166849

Plot the line for the equation on the graphy,−5=3/2(x−2)

Answers

Answer:

The equation of the line is:

y - 5 = 3/2 (x - 2)

Transforming the line into the slope intercept form:

y = 3x/2 - 3 + 5

y = 3x/2 + 2

The slope is 3/2 and the y-intercept is 2.

Plotting this on the graph can be done using these steps:

Locate the point (0,2) on the graph.

From (0,2), count 3 units up and 2 units to the left and indicate that point.

Finally, connect the two points and extend the line.

Is it carbohydrate, lipid, protein, or nucleic acid?

PLEASE HELP!!! LAST QUESTION AND IM STUCKK.

Answers

Answer:

nucleic acid

Step-by-step explanation:

Which expression would be easier to simplify if you used the commutative property to change the order of the numbers?
A. 30 + (-12) + 70
B. -10 + (-20) + 1/2
C. 60 +40 + (-25)

Answers

Answer:it’s A

Step-by-step explanation:

Angle 3 and angle 4 are supplementary angles angle 3 is 88° what is the measure of angle 4?

Answers

Answer:

92°

Step-by-step explanation:

Supplimentary angle = 180°

So, 180° - 88° = 92°

help me with ten please

Answers

Answer:

H

Step-by-step explanation:

Write using interval notation

Answers

Answer:

(-9,5]

Hope this helps!!!!!

car rental agency charges a base rate plus a certain amount per day (d) and can be modeled using the expression 15+ 18d. What is the meaning of 18d in the expression? *
4 points
It is the base rate to rent a car.
It is the cost of renting a car for a day.
It is the total number of days a car can be rented.
It is the portion of the cost based on renting a car for d days.

Answers

Answer:

It is the portion of the cost based on renting a car for d days

Step-by-step explanation:

Given:

Total cost = 15 + 18d

Total cost = fixed cost + variable cost

Fixed cost are cost that do not change.

Fixed cost = base rate = 15

Variable cost changes during production process. The variable cost in the above varies with the number of days (d)

Therefore, 18d is the portion of the cost based on renting a car for d days.

If you rent the car for 1 day

Total cost = 15 + 18d

= 15 + 18(1)

= 15 + 18

= 33

what is 917 divided by 63

Answers

Answer:

14.55

Step-by-step explanation:

11. Use an inequality symbol (<, >, 2, =) to compare -26
O A.
O B. =
O C.<
O D.>

Answers

Answer:

c. <

Step-by-step explanation:

-26 < (less than) 54

Round the numbers to the nearest ten thousands.

62 389-
65 405-
51 330-
343 021-
102 779-​

Answers

Answer:

60,00070,00050,000340,000100,000

3(2h + 7) = 4(9 – h)

Answers

Answer:

h=−2

Step-by-step explanation:

I need help fast
help me please​

Answers

A and B (-4 and 9)

g(x) = 8 means that the y-value, aka g(x), must equal 8. The y-value is the value from top to bottom, so just look at what numbers of x that the y-value equals 8

What is the value of the expression below? (9 divided by 3) + 4 (6 minus 7) –7 –1 7 20


PLEASE ANSWER QUiCK I’m on timer

Answers

Answer:

The answer is -1.

Step-by-step explanation:

Answer:

-1 is the answer saw it on clculator


Brett made a scale drawing of a rectangular room in his house.
The actual length of the room is 12 4/5 ft. The scale used to make the
drawing was 1/4 in. = 1 ft. What is the length, in inches, of the room
on the drawing?

Answers

Answer:

Step-by-step explanation:

Length of the room = 12 4/5 ft = 12.8 ft

Scale is 0.25 inches = 1 ft.

This means that every 1ft is shown as 1/4 inch on the map.

To find what 12 4/5ft on the map, you would multiply 12.8 by 0.25.

12.8 x 0.25 = 3.2 inches

Other Questions
giving 70 points please help I only have 20 minutes to get It....... 1.Who is the speaker 2. How does the speaker describe her life in the first several lines 3.What would it be like to climb a strange stair case in the darkMother to son poem Hilary sells bottled water from a small stand by the beach. On the last day of summer vacation, many people are on the beach, and Hilary realizes that she can make a lot more money this day if she hires someone to walk up and down the beach selling water. She finds a college student named Edison and makes him the following offer: They'll each sell water all day and split their earnings (revenue minus the cost of water) equally at the end of the day. Hilary knows that if they both work hard, Edison will earn $90 on the beach and Hilary will earn $240 at her stand, so they will each take home half of their total revenue: If Edison shirks, he'll generate only $60 in earnings. Hilary does not know that Edison estimates his personal cost (or disutility) of working hard as opposed to shirking at $30. Once out of Hilary's sight, Edison faces a dilemma: work hard (put in full effort) or shirk (put in low effort).In terms of Edison's total utility, it is worse for him to ____(work hard or shirk). Taking into account the loss in utility that working hard brings to Edison, Hilary and Edison together ___ (are or are not) better off if Edison shirks instead of working hard.Hilary knows Edison will shirk if unsupervised. She considers hiring her good friend Carrie to keep an eye on Edison. The most Hilary should be willing to pay Carrie to supervise Edison, assuming supervision is sufficient to encourage Edison to work hard, is ____ .a. 55.b. 30.c. 25.d. 20.It turns out that Hilary's friend Carrue is unavilable that day, so Hilary cannot find a reliable person to watch Edison. Which of the following arrangements will ensure that Edison works hard without making Hilary any worse off than she is when Edison shirks?A. Pay Edison $20, regardless of how many bottles of water he sells.B. Allow Edison to keep 75% of the revenue from the bottles of water he sells instead of 50%.C. Allow Edison to keep 57% of the revenue from the bottles of water he sells instead of 50%.D. Make Edison promise to work hard. MARKING BRAINLIEST sports car accelerates from rest to 26.8 m/s (roughly 60 mi/h) in 5.1 seconds. What is the acceleration of the car?One minute after takeoff, a rocket carrying the space shuttle into outer space reaches a speed of 447 m/s. What was the average acceleration of the rocket during that initial minute? Please match the correct person to what they did. Question 7 options: A Puritan Minister banished from Massachusetts for his beliefs and tolerance of other religions and Native Americans. Started the colony of Providence that became the capital of Rhode Island. was hanged for speaking up and not following Puritan rules. spoke against the approved message of the church and was banished from the Massachusetts Colony 1. Roger Williams 2. Anne Hutchinson 3. Mary Dyer this is sience Question 5 (5 points)Which of the following technologies was a reason for the increasing urbanpopulation in the late 1800s?-Radio-Television-Electricity-Shipping HURRY!!! NEED IT FAST ! WILL MARK BRAINLIEST!!! What are the speaker's Reflection on the topic? Select the correct answer.Which property of equality was used to solve this equation?x 5 = -14x 5 + 5 = -14 + 5x = -9A. addition property of equalityB. subtraction property of equalityC. multiplication property of equalityD. division property of equality What should you do if something hurts? O A. Keep doing the exercise O B. Back off or stop the exercise OC. See a doctor if the pain doesn't go away OD. Both B and C ? how are algae cells different from other cells multiple and divide signed numbers Examine the three graphs shown below.Graph 1Graph 2Graph 3Which graphs have same domain?O A Graphs 1, 2 and 3B. Graphs 2 and 3OC. Graphs 1 and 2D. Graphs 1 and 3NEED THIS PLEASE :) What is the main purpose of the sign Vincent finds outside Manny's Family Market?es )A)to announce they are going out of businessEliminateB)to advertise for job openingsC)to make customers angryD)to announce a contest Which of the following represents a major difference between the Incas and the Phoenicians? The Incas relied heavily on trade, but the Phoenicians did not. The Phoenicians relied heavily on trade, but the Incas did not. The Incas had a system of writing, but the Phoenicians did not. The Phoenicians had a system of writing, but the Incas did not.edit:sorry wrong subject What kind of reaction happens when two compounds switch elements? Apex are the ratio 1:2 and 9:10 equivalent ? Because you need something Find the value of 3x-2 when x=4 Which of these is true about a joint stock company?