Posts by Melanie

Total # Posts: 330

1. science

Breanna and Kevin learned that fossil fuels, such as coal and oil, release energy when they are burned. Breanna believes this energy comes from the ancient plants and animals that formed fossil fuels, but Kevin says the power in fossil fuels comes from the Sun. Who is right ...
2. math

15,000 - 11,700 = 3,300 right?
3. math

The chart below (Monday:2,600, Tuesday: 3,100, Wednesday: 2,800 and Thursday: 3,200)displays Jim's sales for the first four days of his work week. Jim's boss told him that he would get a promotion if his mean sales for Monday through Friday were at or above 3,000. ...
4. Math

Whole numbers from 1-10 that are factors of… 1260 Whole numbers from 1-10 that are factors of... 73500 Whole numbers from 1-10 that are factors of... 3600 Can I have help ASAP with these three problems? Thank you in advance! :)

6. Math

Write the number in two other forms two hundred thirty four thousand one hundred sixty four
7. Math

Managers of a local shopping mall selected a random sample of shoppers and recorded the gender of each. Here are their results. Gender Number of People Male 69 Female 106 Based on this sample, how many of the next 2000 shoppers would we predict to be female? Round your answer...
8. Statistics

What is the probability that simple random sample of 50 staff members provides a sample mean leave of 6.5 to 9.5 weeks?

thanks
10. Math

If the diameter of a circle P is 40 percent of the diameter of circle Q, then the area of circle P is what percentage of the area of circle Q? Not enought information given right?
11. math

oh okay thank you again
12. math

Also if there is another problem similar to this one. Where the x is the denominator. Would you always move it to the other side?
13. math

haha of course
14. math

ohhh stupid mistake.. thank you
15. math

If 3/x= 6, then x-1= I tried to solve for x and got 2, but 3/2 does not equal 6??
16. Literature

Thanks Ms.Sue (:
17. Literature

Since the time of the play's first performance, the props and set have been designed to be minimal so that________. the play can be performed in outdoor as well as indoor locations the play becomes more appealing for younger audiences ***my answer actors must think of new ...
18. Plz help check my answer!!?

This is Algebra 2
19. Plz help check my answer!!?

The commute times during rush hour traffic on a local interstate have a mean of 25 minutes and a standard deviation of 5 minutes. Repeated studies of this section of interstate are considered normally distributed. What percent of commuters drive between 20 - 25 minutes to work...
20. Check my math question please? Very urgent!

The commute times during rush hour traffic on a local interstate have a mean of 25 minutes and a standard deviation of 5 minutes. Repeated studies of this section of interstate are considered normally distributed. What percent of commuters drive between 20 - 25 minutes to work...
21. Math-decimals

Is 20 times 5/6 greater or less than 20?
22. Science

Literally, I see u on EVERY SINGLE THREAD! xD and thank you so much, Ms. Sue! <3
23. Science

Also, Ms. Sue, Are u famous on Jiskha?
24. Science

Why do Oil & Water not mix? I'm so confused (This is just something I wanna know, no multiple choice) also, Ms. Sue, If you see this, Hi
25. Math: Geometry

1.B 2.? 3.? 4.D 5.B
26. Math

A waitress Nikia makes three dollars per hour +8 dollars in tips she goes to earn no less than \$26 today what is the algebra equation for that
27. Chemistry

Determine the volume of a 0.1 M solution of HCl, necessary to titrate 20 mL of a 0.5 M solution of NH3. The value of Kb is 1.8 x 10-5.
28. Chemistry

Determine the variation of the buffer of the problem 1, if 200 mL of the buffer is added 10 mL of a 1.0 M solution of HCl.
29. Chemistry

Calculate the pH of a buffer made of a 0.4 M of acetic acid and 0.5M of sodium acetate. The Ka for the acetic acid is 1.8 x 10-5.
30. MATH

6 divided by 2 is 3, 3 times 1 plus 2 (3) equals 9.
31. PLS HELP REAL BAD, I COULD FAIL!

Actually the answer is b. Because if you want to know the percent of all of them then multiply it by 100 and it will give you the answers. B is the greatest. I had the same question
32. Math

three tenths,two hundredths,and six thousands
33. math

rearrange A = 2 pi r (r+h) to make h the subject (cylinder)
34. math

2x^2 - 5 y = _______ 3x^2 - 4
35. Math

What is 5/12 divided by 3/4
36. English, Language Arts

I didn't take it I don't want to cheat just want to know what questions are wrong I don't need the right answer just if what I have is wrong or right
37. English, Language Arts

I know everyone has not read all of these but I would like help with the ones that do not have to do with a story if some one could please help me.
38. English, Language Arts

Please check my answers 1. In the play Crossroads: A Sad Vaudeville, the use of stage directions better helps the reader to observe the movements of a character. envision inside the mind of a character. understand how a character responds to a certain situation. all of the ...
39. Jar Marbles

A jar contains 5 red marbles, numbered 1 to 5, and 12 blue marbles numbered 1 to 12. a) A marble is chosen at random. If you're told the marble is red, what is the probability that it has the number 3 on it? b) The first marble is replaced, and another marble is chosen at ...
40. math

MR Zheng sold a total of 576 muffins and cookies the ratio of the number of muffins sold to the number of muffin sold to the number of cookies sold was 4:5> how many muffin were sold and how many more cookies that muffins were sold
41. math

A box filled with 38 identical balls had a mass of 2.13kg.When 26 balls were removed,the total mass of box and the remaining balls was 0.96 kg.Find the mass of the box when it was empty
42. Chemistry

At normal temperature and pressure, air has a density of 0.001184 g/mL. What is the mass of air in a room that is 3.93 m by 2.28 m by 2.25 m?
43. Chemistry

A solution is 40% acetic acid by mass. The density of this solution is 1.049 g/mL. Calculate the mass of pure acetic acid in 460 mL of this solution at 20 C. Answer in units of g.

1.Spain 2.b
45. Chemistry

Alright thank you so much for your help! I really appreciate it.
46. Chemistry

The standard disposable propane cylinders for use with camp stoves, lanterns, portable barbecues, etc, contain 355 g of propane. Calculate the total energy available from one of these cylinders.
47. Intro to computers 1

Which logging category does not appear in Event Viewer by default? A. Application B. System C. Volume D. Security

9.9 L/min

x = 90.1?
50. math

There is a diagram of a running track. The track is made up of two straights and two semicircles. The radius of each semicircle is 35 meters. The length of the outer perimeter of the entire running track is 400 meters. Find the length of one of the straight sections of the ...
51. Math

5 multiple choice and 6 short responses
52. chemistry

Now I am a little bit puzzled.If the electronic structure of Fe is Ar 3d^6 4s^2 ,then what i can infer is that i would use 4,but the accurate number would be 3,plz make yourself clear.
53. chemistry

How can i be accurate when assigning oxidation numbers? By this i refer to elements that have more than 1 oxidation # . For example: I have been working with hydrides and i had this reaction in mind: Nb + H Shoud i use 3 or 5 for Nb, why?
54. SCIENCE

Which of the following gases occupy the smallest volume at STP? a 4.032 g H2 b 1.000 mol of carbon dioxide c 6.022 × 1023 molecules of O2 d 35.45 g Cl2
55. math

A box filled with 38 identical balls had a mass of 2.13kg.When 26 balls were removed, the total mass of the box and remaining balls was 0.96 Find the mass of the box when it was empty
56. Math

At the grocery store Mr and Mrs Bailey bought 24 apples and 18 pears. Write a ratio in simplest form to compare apples to pears

58. Chemistry

Number of Moles of AgNO3 when 0.25 grams of NaCl react with AgNO3
59. sociel studies

how did most people in the middle colonies make a living

Is it B?? That was my second answer.

Hey I just have 1 question. What event caused four additional Southern states to secede from the Union? The U.S. accepted West Virginia as a state. The South fired on Fort Sumter. Lincoln declared the Emancipation Proclamation. ****** Lincoln raised an army.
62. Geometry

omg... this doesn't answer any of ur questions but I find it funny that this was posted tomorrow of LAST YEAR, and I'm finding it a year later, the day before it was posted... O.o
63. Physics

Josie and Charlotte push a 14-kg bag of playground sand for a sandbox on a frictionless, horizontal, wet polyvinyl surface with a constant, horizontal force for a distance of 8 m, starting from rest. If the final speed of the sand bag is 0.15 m/s, what is the magnitude of the ...
64. Physics

It takes 170 kJ of work to accelerate a car from 21.5 m/s to 27.0 m/s. What is the car's mass?
65. chemistry

Propane is used in BBQs and burns according to the following equation: C3H8 + 5O2 -> 3CO2 + 4H2O. If 2.2 moles of carbon dioxide are produced, how many moles of oxygen gas reacted?
66. Math, are they all right?

Ms.sue is wrong the last two questions are not right.
67. Math, are they all right?

Why is the answer 12 on the second question I am stumped.
68. Physics

What is the average linear speed of Mercury about the Sun? (The distance from the Sun to Mercury is 5.80 1010 meters. The orbital period around the Sun is 88 days.)
69. Math

1? I'm confused
70. Math

1. Doug earns \$10.50 per hour working at a restaurant.on Friday, he spent 1 3/4 hours cleaning, 2 1/3 hours doing paperwork, and one and 1 5/12hour serving customers.what were doughs earnings?
71. Math

21. Miss Donaldson as \$18.80 per hour for the first 40 hours she works in the week. She Earns 1 1/2Times that amount per hour for each hour beyond 40 hours in a week. , Miss Donaldsonwhere 45.5 hours. How much money did she earn? A. A health insurance payment of \$34.55 was ...

73. Math

1. Doug earns \$10.50 per hour at a restaurant. On Friday, he's been 1 3/4 hours cleaning, 2 1/3 hours doing paperwork, and one 512 hours serving customers . What were dougs earning? 6. Salid bought 35 feet of window trim at a hardware store. The trim it cost \$1.75 per foot...
74. Physics

On earth, two parts of a space probe weigh 14500 N and 6400 N. These parts are separated by a center-to-center distance of 19 m and may be treated as uniform spherical objects. Find the magnitude of the gravitational force that each part exerts on the other out in space, far ...
75. Physics

A car travels at a constant speed around a circular track whose radius is 2.8 km. The car goes once around the track in 430 s. What is the magnitude of the centripetal acceleration of the car?
76. Physics

A wheel is rotating at a rate of 2.5 revolutions every 3.6 s. Through what angle, in radians, does the wheel rotate in 1.0 s?

DNA

Gene
79. Math

The tournament starts with 64 teams playing 32 games and continue until there is only one team left. Come up with a formula for how many teams are left after x rounds. Ok so far I have y= 64-x-32 However, I know that won't work. I'm just not really sure what to do with...
80. chemistry

C3H6O + 4O2 --> 3CO2(g) + 3H2O(g) deltaH= -1790kJ the density of C3H6O is 0.79g/mL. HOw much heat is released by the combustion of 150mL of acetone?
81. health

What causes depression? A. Environmental issues B. There is no known cause C. Biochemical issues D. Genetic issues ithink it D?!!
82. health

________ may likely lead to aggressive behavior. A. All of the above B. Complacency C. Sadness D. Irritability think it d ????!!!
83. Spanish

Yes c. is correct.
84. science

Ano is wrong on the following questions: 2,7, and 10 The real answers are: 2.) A 7.) B 10.) B I already took the test on my own and I looked over Ano's answers and those ones are incorrect.

a 12,000 kg truck is moving right at 22 m/s collides with and sticks to a 1200 kg car moving to the right at 16 m/s. With what speed do the two vehicles move after the collision and in what direction?

a 1500 kg car is driven around a circle of radius 120 m and at a speed of 26 m/s. calculate the magnitude of the centripetal force of the car. What real force keeps the car moving in a circle? the answer is not one of the four fundamental forces, but way one of those forces ...
87. physics

a motorcycle initially moving at +32 m/s accelerates at -4.0 m/s for 3.0s. a car initially at rest accelerates at 4.0 m/s for 5.25 s. a) Which vehicle will be going faster at the end of each given time, and how much faster? b) how far does each vehicle travel during their ...
88. Math

A sc tourists bureau survey showed that 75 % of those who seek information about the state actually come to visit . The office received 8 requests for information. What is the probability that probability that 4 to 6 inclusive of the people will visit sc?
89. math

A shopper uses a department store gift card to pay for 3 sweaters priced at \$27 each. What integer can be used to show the amount of change?
90. Chemistry

Nevermind I got it.
91. Chemistry

What is the concentration when each of the following is dissolved in 1.50 L of water: a) 3.00 moles of NaCl b) 10 g of KCl c) 110 mg of NaCO3
92. physics

a car moving at 6m/s accelerate at 1.5meter squared per second for 4seconds.It then it slows down at rate 1.2 meter squared per second. What is the distance travel?
93. Physics

A photon having wavelength λ scatters off a free electron at A (see figure below), producing a second photon having wavelength λ'. This photon then scatters off another free electron at B, producing a third photon having wavelength λ'' and moving in ...
94. Math

Determine the simple interest p=6742.75,6.05%, t=90 days
95. Chemistry

1. How many moles of ammonia NH3 are produced when 0.45 moles of nitrogen N2 reacts? N2 + 3H2 yields 2NH3 2. How many mililiters of water will be produced when 2.05 g of hydrogen reacts? The density of water is 1.00 g/mL ? 2H2 + O2 yields 2H2O 3. What is the limiting reactant ...

its C
97. math

Rick has a collection of 6 video games. He lets his best friend borrow: of his video game collection. Write two equivalent to this number Explain how you came fractions up with the fractions.
98. math

Adam wants to compare the fractions 129 6 and 1. He wants to order them from least to greatest and rewrite them so they all have the same denominator. Explain how Adam can rewrite the fractions.

vwala
100. Language arts

#1. In the multi draft reading process, what does a reader look for in the second reading of a drama? Answer: How each scene moves the story forward. #2. When and where does the action in the play (Looking Up) take place? Answer: In the backyard at night. #3. Which line of ...
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