Which value of r represents data with a strong negative linear correlation between two variables? 1) -1.07 2) -0.89 3) -0.14 4) 0.92

26,129 questions, page 42
1. science

asked by jiskhasag on May 23, 2013
2. Algebra

do the indicated operations and write with only positive exponents and assume all variables are nonzero real numbers x^-5 y^7/x^-2 y^5 y^2/x^3 x^3=0

asked by Kally on March 13, 2008
3. math

find the values of the variables 32 40 96 120 112 x 144 180 k 230 how do you do this? what is the formula? Thank you

asked by sam on September 15, 2014
4. Elem. Statistics

What is the level of measurement for the following variables? I know a.& b., but I am not clear about c. a. Gender: Nominal b. Age: Ordinal c. Accident: Please help me with c.

asked by Simple Stats on July 4, 2011
5. Algebra

4ã(50x)+3ã(2x)+ã(72x) Combine. Assume that all variables represent nonnegative real numbers.

asked by Becky on October 15, 2012

How do you figure out simplest radical form with variables and/or exponents and/or numbers outside the square root

asked by Rayyan on June 15, 2012
7. physics

A solid sphere of radius 3 cm and mass of 100 g rolls down a 30 degree incline from a height of 1 m. A hoop of the same mass and radius rolls down the same incline from the same height. What is the linear velocity of each body at the bottom of the incline?

asked by Qay on December 4, 2010
8. physics

A solid sphere of radius 3 cm and mass of 100 g rolls down a 30 degree incline from a height of 1 m. A hoop of the same mass and radius rolls down the same incline from the same height. What is the linear velocity of each body at the bottom of the incline?

asked by Qay on December 4, 2010
9. physics

A solid sphere of radius 3 cm and mass of 100 g rolls down a 30 degree incline from a height of 1 m. A hoop of the same mass and radius rolls down the same incline from the same height. What is the linear velocity of each body at the bottom of the incline?

asked by Ama on December 5, 2010
10. electrons

If an electron is placed in between two rods(the left one positive and the right one negative) and the electric field is going from positive to negative. will the electron travel to the positive node due to the electric field?

asked by Anonymous on January 13, 2016
11. Spherical Trigonometery

I am trying to apply the formula cos c = cos a x cos b + sin a x sin b x cos C to find the length of c in my spherical triangle. I am working with 2 examples in a book in which the answers are given. In the first example all the sines & cosines calculated

asked by Mike on January 15, 2008
12. compound inequality

olve. State the solution set using interval notation and graph it 1/3x > 2 and 1/4x > 2 First should I solve for x. How would you handle this problem? yes, solve for x in each.. x>6; x>8 so if the second condition is met, that is x is g reater than eight,

asked by Telli on August 16, 2007
13. economics

Write a 1,750- to 2,450-word paper in APA format that provides an economic profile of the airline industry. I need to discussShifts and price elasticity of supply and demand o Positive and negative externalities o Wage inequality o Monetary and fiscal

asked by Mary on August 23, 2008
14. Math

In the US shoe sizes and foot length are related byt he formula s=3f-24 where s represents the shoe size and f represents the foot in length in inches Solve this formula for f, foot length in terms of s, shoe size

asked by M on November 3, 2014
15. Economics (& Public Policy)

I'm an idiot, but please let me know where to begin here. This is a distance learning course, and I CANNOT contact the professor, and cannot make sense of it in the textbook. If someone can please look at this and let me know where to begin, I thank you

asked by KP on March 22, 2007
16. Science

i posted this earlier, but no one answered. so i'll try again. Can you check my work please? true/false 1.) force is a scalar quantity: *FALSE 2.) the object on which a force acts is called the system: *TRUE 3.)The specific, indentifiable cause of a force

asked by Gavin on December 11, 2012
17. Algebra

When fighting a fire the velocity V of water being pumped into the air is modeled by the function v=ã2hg, where h represents the maximum height of the water and g represents the acceleration due to gravity (32 ft/s^2) Solve the function for h.

asked by Bella on August 24, 2011
18. Algebra

2: Y^5 x y^14= A: 2y^19 B: y^60 C: y^19 D: 2y^60 3: w^12 ÷ w^18 A: w^30 B: w^-30 C: w^6 D: w^-6 4: Using the numbers 3, 2, and 4, which of these problems would have a solution of 4? A: 4 x 2^3 ÷ 2^3 B: 2 x 2^3 ÷ 2^4 C: 3 x 2^3 ÷ 2^4 D: 3 x 2^4 ÷ 2^4

asked by anon on November 14, 2018
19. chemistry

The data in the table show the amount of a 500 g sample of sodium-24 over time. Make a graph of the data (remember to label all axes and title the graph). What is the half-life of sodium-24? Explain how you determined your answer. Sodium-24 decays by beta

asked by liz on May 29, 2012
20. chemistry

2.The data in the table show the amount of a 500 g sample of sodium-24 over time. Make a graph of the data (remember to label all axes and title the graph). What is the half-life of sodium-24? Explain how you determined your answer. Sodium-24 decays by

asked by holly on May 30, 2013
21. Psychology

You want to conduct a psychological research and must identify a way of collecting data. Your hypothesis is: Mental illnesses occur more frequently in people with top management jobs as opposed to lower level/non-management jobs. Which of the following

asked by Mark on February 9, 2019
22. statistics

Question 1 Shown below are rental and leasing revenue figures for office machinery and equipment in the United States over a seven-year period according to the U.S. Census Bureau. Use these data to run a linear regression and then forecast the rental and

asked by Anonymous on November 18, 2012

The tests done to determine if someone is HIV positive are called Enzyme immunoassay or EIA tests. The test screens a blood sample for the presence of antibodies to HIV. Like most tests, this test is not perfect. The table below shows the approximate

asked by Helen on March 17, 2014
24. STATISTIC ****HELP****

The tests done to determine if someone is HIV positive are called Enzyme immunoassay or EIA tests. The test screens a blood sample for the presence of antibodies to HIV. Like most tests, this test is not perfect. The table below shows the approximate

asked by TIKIMA on March 18, 2014
25. help ASAP Statistic

The tests done to determine if someone is HIV positive are called Enzyme immunoassay or EIA tests. The test screens a blood sample for the presence of antibodies to HIV. Like most tests, this test is not perfect. The table below shows the approximate

asked by helen on March 17, 2014
26. Chemistry

Need help with #2 & # 3 1. Record the pairs of data for pressure (atm) and volume (mL). Pressure(atm) Volume(mL) 1.000 150 mL 1.154 130 mL 1.364 110 mL 1.667 90 mL 2. Does your experimental data verify Boyle's Law? Explain. 3. What pressure would the gas

asked by Ashley on May 14, 2010
27. science

Shown below are the data giving the length of life of lights in an underground tunnel. 9.0 months 7.0 months 8.2 months 8.3 months 7.8 months 8.1 months 7.5 months 7.6 months 9.1 months 7.4 months I calculated the standard deviation to be about 0.679.

asked by Joy on January 22, 2012
28. Statistics

Shown below are the data giving the length of life of lights in an underground tunnel. 9.0 months 7.0 months 8.2 months 8.3 months 7.8 months 8.1 months 7.5 months 7.6 months 9.1 months 7.4 months I calculated the standard deviation to be about 0.679.

asked by Joy on January 22, 2012
29. chemistry

For the strong acid solution 9.7×10−3 , determine (H3o+)and (OH-)

asked by Jessica on May 2, 2012
30. chemistry

The approximate pH of a 3.0 x 10-3 M solution of the strong acid H2SO4 is a) 3.5 b) 3.0 c) 2.5 d) 2.2 e) -3.0 how do you do this?

asked by bob on March 17, 2012
31. American Government

According to the Anti-Federelist, to strong a government meant?

asked by Patricia Smith on April 23, 2011

why is it that only the first hydrogen bond in a polyproptic acid strong?

asked by sam on December 20, 2010
33. Chemistry

Calculate [H3O+] and [OH-] in 0.22 M KOH(aq). This is a strong base.

asked by maria on October 5, 2011
34. science

why does magnesium dissolve quicker in strong acid

asked by Jack on January 17, 2010
35. chemistry

For the strong acid solution 9.7×10−3 , determine (H3o+)and (OH-)

asked by Jessica on May 2, 2012

Explain if it is possible to have a dilute solution of a strong acid? Thanks.

asked by al on March 26, 2009
37. acids and alkalies

what aname of a strong alkalie would you use to neutralise a acid

asked by jamie russell on April 2, 2008
38. science

name a strong alkali usually found in oven cleaners.

asked by Taylor .W on September 28, 2008
39. Economics

what is the state of domestic tourism when rand is strong

asked by Lihle on August 19, 2018
40. english

i need three strong reason to convince people to go bowling

asked by lakesha on December 4, 2010
41. physical science

What is the pH of a 0.01 M solution of the strong acid HNO3 in water?

asked by breiann on January 23, 2012
42. Economics

How is the state of domestic tourism if the Rand is strong

asked by Mbali on August 23, 2015
43. History

Why would it be important for railroads to use strong management techniques?

asked by Ace on March 20, 2017
44. social studies

hey, need help with a speech about Charles Perkins and his strong will

asked by tegz eibz on October 31, 2007
45. chemistry

What are some example of mild and strong oxidizer that are used in organic synthesis? Thanks

asked by John on April 30, 2008
46. science

The 140-million year-old fossil of a tortoise was recently found about 700 meters deep in a coal mine in northeast china. Scientists studying the fossil believe that it represents a previously unknown species? Which of the following is the best conclusion

asked by kizzi on June 5, 2016
47. HISTORY HELP ME

28. Which answer best describes how some enslaved African Americans expressed their emotions? (4 points) They didn’t believe in public emotional displays, so they would often express themselves only to the tribal chief. They participated in sports like

asked by B on December 19, 2012
48. Chemistry

Is there a correlation between temperature change with the changes on the molecular level? And what is it? (talking about changes in phases with melting and heating. and the temp corresponds to the time it takes for each phase to melt, vaporize, etc.) (on

asked by Kara on January 30, 2009
49. UOP RES 342

Use the numerical data from one of the data sets provided. · Develop one business research question from which you will formulate a research hypothesis that will test two or more populations. · Prepare a 250 word paper describing the results of a

asked by Rachael on July 15, 2012

MGT635-1003B-04 International Business Operations Management Assignment Name: Unit 5 Individual Project Deliverable Length: 6-7 body pages Details: As the production manager for an electronic circuit company you have encountered the following situation.

asked by 1SGCalhoun on August 15, 2010
51. Financial Analysis - free cash flows

b. Do negative values of free cash flow in way alter or invalidate the notion that a company's fair market value equals the present value of its free cash flows discounted at the company’s weighted average cost of capital? Suppose a company's free cash

asked by Tia on March 1, 2007
52. Physics

Two particles, one with negative charge -Q and the other with positive charge +2Q, are separated by a distance d. Both charges lie on the x-acis with the negative charge at x=0. At what point(s) along the line joining the particles is the potential equal

asked by Michael on July 17, 2012
53. Math 209

Predicting Home Prices Selling prices of homes can depend on several factors such as size and age. The accompanying table shows the selling price for three homes. In this table, price P is given in thousands of dollars, age A in years, and home size S in

asked by Lulu on March 17, 2012
54. Physics

Two forces, and , act at a point, as shown in the picture. has a magnitude of 8.00 and is directed at an angle of = 65.0 above the negative x axis in the second quadrant. has a magnitude of 6.00 and is directed at an angle of = 53.2 below the negative x

asked by Miche on February 25, 2012
55. physics

as a hiker descends a hill, the work done by gravity on the hiker is a.) positive and depends on the path taken b.) negative and depends on the path taken c) positive and indepedent of the path taken d.)negative and independent of the path taken

asked by tina on October 11, 2010
56. math

A sixth-grade class has 20 total students, while the entire middle school has 1,000 students. A census is taken of the entire school’s population to see on which day of the week every student was born. Theoretically, 14.3%, or 1/7 of the students should

57. algebra

P. 620 #56. Predicting Home Prices Selling prices of homes can depend on several factors such as size and age. The accompanying table shows the selling price for three homes. In this table, price P is given in thousands of dollars, age A in years, and home

asked by genie on November 8, 2011
58. physics

Which of the following statements about work is or are true? (More than one statement may be true.) A. Negative net work done on an object always reduces the object's kinetic energy. B. If the work done on an object by a force is zero, then either the

asked by andrea on February 22, 2011
59. spring physics check work plz

A block (mass 0.5 kg) is hanging from the end of a spring. The spring is observed to stretch by 20 cm in order to come to equilibrium. a) What is the spring constant? F=-kx F=mg=.5(9.8)=4.9 N and x=-.2meters -4.9/-.2meters=24.5 =k should the constant be

asked by Anonymous on August 16, 2009
60. Chemistry

A chemist performs an acid–base titration using 0.176 M aqueous NaOH as the titrant with 26.15 mL of 0.102 M H2SO4. The endpoint of the titration is detected using phenolphthalein as the indicator. Some acid–base indicators are listed along with their

asked by Onye on March 4, 2018
61. physics

A 8.95 μC point charge is glued down on a horizontal frictionless table on the right. If is tied to a -6.35 μC point charge by a light nonconducting wire with length 2.5 cm on the left. The charges are placed in a external, uniform electric field with

asked by Anonymous on February 3, 2014
62. Math/Management

MeanBeats is a company that manufactures and sells electronic musical equipment. Their headphone product line consists of two products, Reverbia and Bscape. MeanBeats sells the headphones to retailers at \$600 and \$300 per pack for Reverbia and Bscape,

asked by Carla on October 17, 2012
63. calculus

a small business owner buys a truck for \$20,000 to transport supplies for her business. She anticipates that she will use the truck for 5 years and that the truck will be worth \$10,000 in 5 years. She plans to claim a depreciation tax credit using the

asked by Greg on August 2, 2014
64. phi

How would the Kantian moral theory apply in resolving the negative effects on a community? (Points : 1) By treating persons in the community as ends in themselves, then companies will strive to provide quality products as well as to remedy any negative

asked by jason on July 29, 2014
65. Computer Science JAVA

Project 4 Introduction - the SeaPort Project series For this set of projects for the course, we wish to simulate some of the aspects of a number of Sea Ports. Here are the classes and their instance variables we wish to define:  SeaPortProgram extends

asked by Moe on December 10, 2017
66. Chemistry

When I invert the concentration of say this equation: 2HCr4- + 3HS03- + 5H+ -> 2Cr3+ + 3SO4^2- + 5H20. and get RSRRE wrt HS03-, the rates of reactants is positive and the rates of products is negative. If say it is wrt HS03- which gives it a coefficient of

asked by Tri on September 23, 2008
67. chem

Under constant pressure, a system of gases is sealed in a cylinder and then allowed to expand. What can you conclude about the work associated with this change? A. Work is negative and is done to the system. B. Work is negative and is done by the system.

asked by jessie on August 20, 2016
68. Algebra

1.What is the domain of this relation? domain range -3 3 -2 -6 -1 0,15 0 -6 1 -1 Answer- -3,-2,-1,0,1 2. Compare the quantity in Column A with the quantity in Column B Column A slope of y =3 Column B slope of x =3 Answer- The two quantities are equal 3.

asked by lizzie on August 7, 2011
69. Physics

Six point charges of equal magnitude q are at the corners of a regular hexagon that has sides of length d. All the odd number charges are positive and all the even number charges are negative (so that there are three positive and three negative charges and

asked by Anonymous on February 25, 2015
70. Statistics

If Y1 is a continuous random variable with a uniform distribution of (0,1) And Y2 is a continuous random variable with a uniform distribution of (0,Y1) Find the joint distribution density function of the two variables. Obviously, we know the marginal

asked by Sean on November 15, 2009
71. home economics

You are gathering demographic data in a village. You suspect that families have a gender bias; that is, they have children until a certain target number of sons are born, but you don’t have direct evidence of this. All you have is information on the sex

asked by economist on May 11, 2008
72. Bussiness

The market for carrots is comprised of two segments: fresh market carrots, which have excellent, uniform color and a small core, and processing carrots, which are larger than fresh market carrots but still have good flavor, color, and sweetness. Annual

asked by Ricky on February 24, 2012
73. SAS Code For Goldfeld

Can someone check my code and tell me what I am doing wrong? My regressions are not changing so i think my code must be wrong. data foodus; input y x n; cards; 15.998 62.476 1. 16.652 82.304 5. 21.741 74.679 3. 7.431 39.151 3. 10.481 64.724 5. 13.548

asked by Robocop on May 3, 2013
74. algebra

What are the intercepting points of y^2=-4x and x^2=y I set both equations equal to 0, but only get x=0 and there is another intercepting point. please help! Graphically, y=x^2 is positive for all values of x, whether positive or negative. The second

asked by mary on December 7, 2006
75. math stats help

3-34 The Chicago Transit Authority thinks that excessive speed on its buses increases maintenance cost. It believes that a reasonable median time from O’Hare Airport to John Hancock Center is about 30 minutes. From the following sample data (in minutes)

asked by Anonymous on February 6, 2011
76. chemistry

Calculate the pH from the addition of 10 mL of a 0.10 M NaOH solution to 90 mL of 0.10 M HCl. okay so i understand how to do most of it but i get messed up at one part.. so i made my equation: NaOH + HCl -> H2O + NaCl (strong base, strong acid= complete

77. math

Billy Jeans' profit is given by the equation y=2.7-.0000015(x-2550)^2, where x represents the number of units manufactured and y represents the profit given in millions of dollars. What is the maximum possible profit? a) 2.55 billion dollars b) -7.1

asked by joe on January 21, 2007
78. chemistry

standard enthalpies of formation H20(l) = -286 LiOH(s) = -487 standard enthalpies of solution for LiOH(s) to split into it's ions is 21 all values are in KJmol-1 Use the data given to calculate a value for the enthalpy change for the reaction of lithium

asked by Gemma on February 8, 2011
79. English

I urgently need you to check these sentences. Thank you very much for helping me. I don't know a few technical terms. 1) I can see two young men who are probably (working??) on the Stock Exchange. The one in the left-hand side of the picture is analyzing

asked by Henry2 on January 19, 2012
80. statistics

If a certain species of female lizard mate males that are .75 years younger what would the correlation between the ages of the males and female lizard be?

asked by Gee on September 5, 2012
81. math

Which system of inequalities is represented by the graph? A system of inequalities is graphed on a coordinate plane. One line passes through left parenthesis negative 5 comma 3 right parenthesis and left parenthesis 0 comma 8 right parenthesis. The second

asked by venusthedalek on January 22, 2019
82. physics E&M

I posted a question on here earlier but I wasn't able to solve from what the person had told me. An infinite line charge of uniform linear charge density lambda = -2.5 micro Coulombs lies parallel to the y axis at x = 0 m. A point charge of 3.5 micro

asked by aaron b. (again sorry) on January 27, 2012
83. physics

A spherically symmetric object, with radius R = 0.50 m and mass M = 1.3 kg, rolls without slipping across a horizontal floor, with velocity V = 2.1 m/s. It then rolls up an incline with an angle of inclination θ = 25° and comes to rest a distance d = 3.0

asked by Katie on March 21, 2012
84. Geography

Graticules on small scale map represents ________ and ______. Graticules on large scale map represents ________ and ______.

asked by Jessica on October 7, 2011
85. Statistics

You are a real estate agent and you are trying to predict home prices for your clients that want to list their house for sale. You have a very small city without much data. You will need to use the data that you have available for the past year on homes

asked by Kathryn on June 2, 2013
86. Science

Identify the variables from the experiment below. Timmy has decided he wants to test which if music can read help flowers grow. He decides to expose some roses to classic music 10 minutes every day. He will have another group of roses that will receive no

asked by heauxszn on September 7, 2018
87. chemistry

Styrene is produced by catalytic dehydrogenation of ethyl- benzene at high temperature in the presence of superheated steam. (a) Find ÄH°rxn, ÄG °rxn, and ÄS °rxn, given these data at 298 K: (b) At what temperature is the reaction spontaneous? What

asked by Dalton on November 9, 2015
88. statistics

The purchasing department has suggested that all new computer monitors for your company should be a new design. You want data to assure you that employees will like the new monitors. The next 20 employees needing a new computer are the subjects for an

asked by appy on November 2, 2012
89. Algebra 1

in 1920, the record for a certain race was 45.8 sec. In 1980, it was 44.6 sec. Let R(t)=the record in the race and t=the number of years since 1920. find the linear function that fits the data use the function (a) to predict the record in 2003 and in 2006

asked by Need Help on September 22, 2009
90. math

1) Why should we clear fractions when solving linear equations and inequalities? Demonstrate how this is done with an example. Why should we clear decimals when solving linear equations and inequalities? Demonstrate how this is done with an example.

asked by jess on March 21, 2012
91. Precalculus

A small business owner buys a truck for \$20,000 to transport supplies for her business. She anticipates that she will use the truck for 5 years and that the truck will be worth \$10,000 in 5 years. She plans to claim a depreciation tax credit using the

asked by kat on August 2, 2014

1. Which line models the data points better and why? blue, because the data points are all close to the line red, because it goes through one of the points i think that is A

asked by batman on March 22, 2013
93. Math

A student purchased a box of green tea mints. The nutrition label on the box stated that a serving of 3 mints contains a total of 10 calories. A) Graph the function C, where C(x) represents the number of calories in x mints. B)Write an equation that

asked by Gabby on April 21, 2014
94. economics

which of the following statements about inflation are true? check all that applies a) policy makers also worry about a negative inflation rate, or deflation b) painful government actions may sometimes be necessary to bring down a high inflation rate. c) A

asked by will on September 23, 2012

The Chemicals are: Baking Soda- NaHC03 Calcium Chloride- CaCl2 Bromothymol Blue - (acid base indicator) _______________________________________ What is: (a) The equations for the dissolution of calcium chloride and sodium bicarbonate in water (b) Look up

asked by Saira on January 6, 2009
96. Math

In each case, determine whether the situation calls for a discrete or continuous random variables and explain your answer.

asked by Alex on March 30, 2010
97. Physics

You throw a plate off your roof with a speed of 10.0 m/s. 4.00 seconds later it hits the ground? How far? What equation do i use? Variables explain!

asked by Anonymous on March 22, 2012
98. Science

What is the relationship between the number of gas particles and pressure. Are these two variables directly proportional or do they vary inversely?

asked by Sarah on October 9, 2013
99. Algerbra

Let a, b, c and d all be real numbers and let x, y and z be variables. What is the solution (solve for x) to the equation a(x+y) + bz + c = d and state any restrictions (you cannot divide by zero). I'm lost for this... Can someone help me?

asked by BK on September 16, 2016
100. mathematical physics

Separate the following partial differential equation into a set of three ODEs by the method of separation of variables: d^2u/dt^2 =c^2,[d^2u/dr^2+1/r du/dr+1/r^2 d^2u/d theeta^2]

asked by gourav on March 28, 2015