Stella

Most popular questions and responses by Stella
1. Statistics

Four pairs of data yield r=0.942 and the regression equation y-hat=3x. Also, y-bar=12.75. What is the best predicted value for x=4.3? I know that the answer is 12.5, but how do you know to use the y-bar value instead of plugging the x value into the

2. Language arts

what is the preposition in this sentence after the movie we will grab a pizza to take home A.after B.will C.grab D.to i think it is B

3. Math

You sell instruments at a Caribbean music festival. You earn \$326 by selling 12 sets of maracas, 6 sets of claves, and x djembe drums. Write an equation you can use to find the number of djembe drums you sold. An equation that you can use is ___ =326

4. Math

On Saturday, you spend \$33, give \$15 to a friend, and receive \$20 for mowing your neighbor’s lawn. You have \$21 left. Use two methods to find how much money you started with that day. You started with \$ that day.

5. Fractions

julia has 8 red barrettes. 2/4 of her barrettes are red. how many barrettes does julia have? please explain, is it one whole?

6. Physics

A meter stick is positioned on a horizontal table top such that the 100cm end extends over the edge of the table. A 200 g mass is produced on the 85 cm mark of the meter stick. When the 70 cm mark of the meter stick is on the edge of the table, the meter

7. fashion and fabrics

Differences between print patch and calico patch

8. Algebra 1

Check answer Glass Vase You are taking a glass-blowing class and have created a vase in the shape of a sphere. The vase will have a hole in the top so you can put ﬂowers in it and it will sit on a stand. The radius of your vase is 21/2 inches. Use the

9. math

Let f(t) = Q0at = Q0(1 + r)t. f(7) = 75.94 and f(9) = 91.89 (a) Find the base, a. (Round your answer to two decimal place.) a = (b) Find the percentage growth rate, r. (Round your answer to the nearest percent.) r = % I honestly have no idea how to

10. psych/statistics

Consider the following: The television network you addressed in Week 4 is asking you to compare the moods of groups that watch different types of shows. You can choose what they mean by moods. You may compare them on general mood, happiness, depression,

11. Math

Hello, I have trouble doing this problem: Sarah can bicycle a loop around the north part of Lake Washington in 2 hours and 40 minutes. If she could increase her average speed by 1km/hr, it would reduce her time around the loop by 6 minutes. How many

One of your friends is heading north for the Christmas holiday and the other friend is heading south. If when they start, they are 1029 miles apart and one car is traveling at 53 miles per hour, and the other 45 miles per hour, how many hours before the

13. Physics

A tortoise can run with a speed of 10.1 cm/s, and a hare can run 19.4 times as fast. In a race, they both start at the same time, but the hare stops to rest for 122 seconds. The tortoise wins by a shell (20.8 cm). How long does the race take? What is the

14. math

write an equation for the linear function: The cost of renting a car is a flat\$26, plus an additional 0.23 cents per mile that you drive. How far can you drive for \$87?

15. Math!

A point is reflected over the x-axis and then reflected over the y-axis. Will the coordinates after these two reflections be the same or different if the point is first reflected over the y-axis and then over the x-axis? Use an example to support your

16. Physics

At a certain distance from the center of the Earth, a 4.00-kg object has a weight of 1.95 N. Calculate this distance.

17. English - the tell tale heart

Could you please find answers to these questions? 1 what bothers the narrator about the old man? 2 how does the narrator kill his victim? 3 where does the narrator hide the corpse? 4 as the narrator talks to the police, what does he think he hears? 5 the

18. Math

Write and solve an equation to find how much water Montana average 3 month temperature is then minnesota

19. Physics

Two baseballs, each with a mass of 0.157 kg, are separated by a distance of 379 m in outer space, far from any other objects. If the balls are released from rest, what speed do they have when their separation has decreased to 173 m? Ignore the

20. math

a cylindrical container has a base radius of 14cm and height 18cm. How many litres,correct to the nearest litre, of liquid can it hold. Take 22/7

21. finance

Each day's receipts can be kept separate by, a. preparing a deposit slip for each day's receipts, b.reconciling the bank statement, c. listing the ABA numbers,d. making daily bank withdrawals.

22. Social studies

Directions; With your partner research events that occurred during each time period below. Use this information to make your illustrated timeline on separate blank paper. Your timeline might cover the entire 1800–1950 period or a part of that time. my

23. Algebra

During the first part of a trip, a canoeist travels 57 miles at a certain speed. The canoeist travels 13 miles on the second trip at a speed 5 mph slower. The total time for the trip is 5 hrs. what was the speed on each part of the trip? The speed on the

24. texas history

what did the apaches and jumanos have in common? a.both practiced hunting, gathering, and agriculture*** b.both relied only on the practice of agriculture c.both resided in the same region of present-day texas d.both were nomadic groups

25. Physics

A football is kicked at ground level with a speed of 20.7 m/s at an angle of 34.6° to the horizontal. How much later does it hit the ground?

26. math

Hi, I am trying to solve a problem using Chebyshev's Theorem. The problem says that: A large sample of Northern Pike caught at Taltson Lake (Canada) showed that the average length was x (mean)=32.5 inches with sample standard deviation s=8.6 inches. a.)

27. PHYSICS

Three moles of an ideal gas are compressed from 5.5*10^-2 to 2.5*10^-2 m^3. During the compression, 6.1*10^3J of work is done on the gas, and heat is removed to keep the temperature of the gas constant at all times. Find the temperature of the gas. I

28. Math.

39. Students are cleaning a local park in groups. There are 50 boys & 75 girls. Each group has the same number of boys and the same number of girls. What is the greatest possible number of groups? 40. You are dividing a community garden 35 m long by 15 m

29. Physics

Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal

30. Math

Use a table of values of f(x) to estimate the value of the limit to four decimal places. lim_(x->-infinity)(sqrt(2 x^2 + 4 x + 1) - sqrt(2 x^2 + 2 x + 7)) 1

31. PHYSICS

Three moles of an ideal gas are compressed from 5.5*10^-2 to 2.5*10^-2 m^3. During the compression, 6.1*10^3J of work is done on the gas, and heat is removed to keep the temperature of the gas constant at all times. Find the temperature of the gas. Can

32. Math

Your doctor prescribe you to take 400 mg of medicine every eight hours. How many ounces of medicine do you take in a day?

33. Algebra

During the first part of a trip, a canoeist travels 57 miles at a certain speed. The canoeist travels 13 miles on the second trip at a speed 5 mph slower. The total time for the trip is 5 hrs. what was the speed on each part of the trip? The speed on the

34. Math

The cost, C, of a manufacturing and selling x units of a product is C = 23x+73, and the corresponding revenue, R, is= x^2-35. Find the break-even value of x? A. 4 B. 31 C. 31 and 4 D. 27

35. chemistry

The solubility of an ionic compound is 30 grams of compound in 100 mililiters of water. If 60 grams of the compound is dissolved in 200 mL of water, the solution will saturated. t/f

36. English

supporting details may refer to secondary points which may help to clarify choices are :points or all information of a paragraph, another name of main idea or the topic sentence? plz help me

37. math

2x^4y^2+4x^3y^3+2x^2y^4

38. Algebra

solve by factoring: 2h^2-h-3=0

39. English 12

In the short story defender of the faith by philip roth,Grossbart insists on caling da sergeant 'sir'.Why doz Marx object?Is dis form of adress merely an oversight,or doz Grosbart hav sum ulterior motive?

40. math

Hi, How do I find the coefficient of variation? I found the sample variance and the standard deviation for the problem I'm trying to solve, but I can't find the coefficient of the variation

41. math

Find the exact value of the expression. cos(π/16)cos(3π/16) − sin(π/16) sin(3π/16)

42. chemistry

what do you use a pipestem triangle for

43. psych

what are Similarities and Differences of Gangs and Organized Crime Groups

44. ELA

Where is the complete subject in this sentence, "The goal of settlement houses is the improvements of neighborhoods"?

45. math

56x^3y^5-40x^2y^6+8x^2y^3

46. English

We are to write a phase autobiography. English is my second language. Could you just point out some obvious mistakes or awkwardness? These are just segments of my imperfect essay that I am not quite confident to show. Even when his raven hair suddenly

47. physics

Three moles of an ideal gas are compressed from 5.5*10^-2 to 2.5*10^-2 m^3. During the compression, 6.1*10^3J of work is done on the gas, and heat is removed to keep the temperature of the gas constant at all times. Find the temperature of the gas. Can

48. maths

Two fair dice are rolled.what is the probability that both sum up the same number of points

49. Social Science

A Manifesto for Creativity. I have an assessment on creating a manifesto that enhance creativity in workplace and I'm really out of idea. The assessment details include - how can creativity best be encouraged within workplace -what can you do as a future

50. Accounting

When M. Landis invests \$20,000 in the corporation in return for shares of stock, is the Retained Earnings account affected? Explain your answer.

51. Network

List some ways in which an ISP network’s hardware would differ from the hardware found on a LAN of an non-provider network

52. biology

a biologist prepared a strip of agar (a gelatin- like substance) as shown in the figure below. at position 7, he placed a concentrated sample of amino acid A and at position 1, a concentrated sample of enzyme E. E is known to catalyze the conversion of A

53. Algebra 1`

Write the equation so that y is a function of x. -12x+3y=15 Can someone show me steps.

54. math

find the three cuberoots of 8( cos 264 + jsin 264) and state which is the principal cuberoot. Show all three roots on an argand diagram.

55. math

How do I solve 7/2t+2=4+7t

56. principles of colors

To slightly gray paint has an intense blue value what color would you add to achieve the value you want A red b orange c yellow d green

57. psych

Give some background information on your hypothetical observational study - describe the setting that you would use for your observational study, why you are interested in this study and what you hope to learn. (2) Explain whether you would be an

How can I improve my thesis for a comparative essay: Although both ¡°All is Calm¡± and ¡°The Bicycle¡± portray love and problems between family members, the protagonists in the stories experience drastically different journeys and each learned

Hello, I am trying to help my son with his homework but i have no clue how to work these following: write a number expression for each phrase 1) 1,285 is how much more than 622 2) \$402 increased by \$86 3) 946 beads, then 80 fewer beads 4) 12 adults

60. algebra

Solve the system of equations: what is the y-value in the solution? 3x - 5y = -16 and 2x + 5y = 31

61. biology

What is the typical ratio for a dihybrid cross between two parents that are double heterozygotes?

62. Science

I need help answering with the below question please What are three ways resources are brought up from under Earth's Surface? Thanks!

63. physics

What would be the resulting acceleration if a 7.0 kg shot put was launched with a force of 140 N?

64. management

The employee's performance objectives a. are designed by th employee only, b. ignore past work goals and objectives c. are designed by the supervisor only d.outline the employee's goals for the coming year.

65. math

Let f(t) = Q0at = Q0(1 + r)t. f(7) = 75.94 and f(9) = 91.89 (a) Find the base, a. (Round your answer to two decimal place.) a = I honestly have no idea how to approach these problems. I wrote out the different equations: 75.94 = Q0a^7 and 91.89 = Q0a^9 but

66. Algebra

-√3, 3√3 Write a quadratic equation in the variable X having the given numbers as solutions. Type in standard form ax^2 + bx +c =0

67. measurement

A tree in Melaine's yard is 35 feet tall. Melanie is 5 feet tall. The tree is how many times as tall as Helen?

Please help solved the below problem. Explain in words how to add 352 + 958. Make sure to explain regrouping, if necessary? Thanks, Stella

69. math

10.5 is 14% of x

70. calculus

The region R is defined by 1(

71. math

This is an SAT prep question. A woman drove to work at an average speed of 40 miles per hour and returned along the same route at 30 miles per hour. If her total traveling time was 1 hour, what was the total number of miles in the round trip?

72. math

This is an SAT prep question: There are 8 sections of seats in an auditorium. Each section contains at least 150 seats but not more than 200 seats. Which of the following could be the number of seats in this auditorium? A.) 800 B.)1,000 C.)1,100 D.)1,300

73. legal ethics

A child does not have his parental feild trip form and wants to get on the bus for the outing. He insists his dada said he coudld go. It is time for the bus to leave, what do you do? What is your ethical responsibility? To the child, parent, school

74. math

Write the expression as the sine, cosine, or tangent of an angle. sin(2π/9)cos(3π/8)+cos(2π/9)sin(3π/8)

75. math

Use the fundamental identities to simplify the expression. cos(x)(1 + tan2(x))

76. social studies

i am doing a current event in class and what to know what the biggest news was. can u please answer what i should do and i will research it thx

77. english

Which of the ff. sentence is the most formal in style? I’m applying to be an intern to gain experience with your company I’m applying to this internship to gain experience with your company I’d like to apply for this internship in order to gain

78. math

P= 12e^(-0.02t) What is the growth rate? I thought it would be -1.98% because I punched in the e^-0.02 part and got .98 something and then that minus 1 is r so I got -1.98.

79. pre algebra

what is the absolute value of -/-16/ thank you.

80. chemistry

What mass of N2O occupies a volume of 0.500 L at 0 degrees Celsius and 101.325 kPa?

81. HSM 260 checkpoint 6

I think the question is...we are only to use the year 2002 in Appendix D. Others are using 2002, 2003, and 2004, to come to the BEP. If an instructor asks for us to only use 2002, how can we complete the checkpoint accurately.

82. math

how do I solve: -3/7(m+5)=3+2m

83. algebra

-5 and -2 write quad equation. __=0 Thanks

SUZIE HAD TO WRAP A TRUCK,A CAR, A BUS AND A TRAIN. IN HOW MANY ORDERS CAN SHE WRAP THESE PRESENTS?

85. MATH

SUZIE HAD TO WRAP A TRUCK,A CAR, A BUS AND A TRAIN. IN HOW MANY DIFFERENT ORDERS CAN SHE WRAP THESE PRESENTS?

86. algebra

-5k squared + 125=0 use the square root properly to slove the equation

87. MATH

DAN,DEBBIE,ED AND GENE WERE TRAINING FOR CROSS-COUNTRY RACING. ED RAN TWICE AS FAR AS DEBBIE. GENE RAN 8KM LESS THAN ED. DEBBIE RAN 5KM MORE THAN DAN. DAN RAN 6KM.HOW FAR DID EACH PERSON RUN? (HINT START WITH DAN'S DISTANCE AND WORK BACKWARDS)

88. chemistry

what mass of Ca is needed to completely react with 5.0M of .250ml Copper I Phosphate?

89. biology

Are different species always fery different?

90. biology

You are gardening and accidentally puncture your arm with a nail that was in the soil. No significant occurred but your arm was swollen. Recall that soil contains many microorganisms that could be pathogenic. Describe in detail the nonspecific and specific

91. English12

In the short story defender of the faith by philip roth,what is the theme of the story?Justify 150 words

92. English12

In the short story,defender of the faith by philip roth,What incident finally convinces Marx to punish Grossbart?

93. English12

In the short story defender of the faith by philip roth,Outline 3 occasions where Grossbart accuses Marx of being Prejudiced against his own people(jews)

94. English12

In the short story defender of the faith,by philip roth,Explain 3 occasions where Grossbart tries to "manipulate" Marx.Is he successful in his attempts?

95. English 12

In the short story defender of the faith by philip roth,Why does Marx refuse to support Grossbart when the Captain questions him about his eating habits?

96. English 12

In the short story defender of the faith by philip roth,Identify the criteria by which Captain Barrett judges a man's character.

97. management

What is employee self esteem?

98. Math

Assume it takes 180 quarter credits to get a baccalaureate degree. If 1 quarter credit counts for one classroom hour of lecture each week of the quarter and you study 2.5 hours for each hour in class,how many hours must you invest to get a degree? (You may

99. math

Hi, How do I find the coefficient of variation? I found the sample variance and the standard deviation for the problem I'm trying to solve, but I can't find the coefficient of the variation