Posts by melanie
Total # Posts: 330

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 ... 
math
15,000  11,700 = 3,300 right? 
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. ... 
Math
Whole numbers from 110 that are factors of… 1260 Whole numbers from 110 that are factors of... 73500 Whole numbers from 110 that are factors of... 3600 Can I have help ASAP with these three problems? Thank you in advance! :) 
Language
Yes, your answers are correct. :) 
Math
Write the number in two other forms two hundred thirty four thousand one hundred sixty four 
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... 
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? 
Math
thanks 
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? 
math
oh okay thank you again 
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? 
math
haha of course 
math
ohhh stupid mistake.. thank you 
math
If 3/x= 6, then x1= I tried to solve for x and got 2, but 3/2 does not equal 6?? 
Literature
Thanks Ms.Sue (: 
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 ... 
Plz help check my answer!!?
This is Algebra 2 
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... 
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... 
Mathdecimals
Is 20 times 5/6 greater or less than 20? 
Science
Literally, I see u on EVERY SINGLE THREAD! xD and thank you so much, Ms. Sue! <3 
Science
Also, Ms. Sue, Are u famous on Jiskha? 
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 
Math: Geometry
1.B 2.? 3.? 4.D 5.B 
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 
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 105. 
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. 
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 105. 
MATH
6 divided by 2 is 3, 3 times 1 plus 2 (3) equals 9. 
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 
Math
three tenths,two hundredths,and six thousands 
math
rearrange A = 2 pi r (r+h) to make h the subject (cylinder) 
math
2x^2  5 y = _______ 3x^2  4 
Math
What is 5/12 divided by 3/4 
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 
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. 
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 ... 
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 ... 
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 
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 
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? 
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. 
Spanish
1.Spain 2.b 
Chemistry
Alright thank you so much for your help! I really appreciate it. 
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. 
Intro to computers 1
Which logging category does not appear in Event Viewer by default? A. Application B. System C. Volume D. Security 
Anatomy
9.9 L/min 
math
x = 90.1? 
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 ... 
Math
5 multiple choice and 6 short responses 
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. 
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? 
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 
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 
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 
Spanish
Your answers are accurate , congrats on your excellent Spanish! ! 
Chemistry
Number of Moles of AgNO3 when 0.25 grams of NaCl react with AgNO3 
sociel studies
how did most people in the middle colonies make a living 
History Check My Answer!
Is it B?? That was my second answer. 
History Check My 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. 
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 
Physics
Josie and Charlotte push a 14kg 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 ... 
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? 
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? 
Math, are they all right?
Ms.sue is wrong the last two questions are not right. 
Math, are they all right?
Why is the answer 12 on the second question I am stumped. 
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.) 
Math
1? I'm confused 
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? 
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 ... 
Math
Continuation... Round your answer to the nearest 10th of a second 
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... 
Physics
On earth, two parts of a space probe weigh 14500 N and 6400 N. These parts are separated by a centertocenter 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 ... 
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? 
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? 
Science
DNA 
Science
Gene 
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= 64x32 However, I know that won't work. I'm just not really sure what to do with... 
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? 
health
What causes depression? A. Environmental issues B. There is no known cause C. Biochemical issues D. Genetic issues ithink it D?!! 
health
________ may likely lead to aggressive behavior. A. All of the above B. Complacency C. Sadness D. Irritability think it d ????!!! 
Spanish
Yes c. is correct. 
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. 
physics101 please
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? 
physics101 please
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 ... 
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 ... 
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? 
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? 
Chemistry
Nevermind I got it. 
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 
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? 
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 ... 
Math
Determine the simple interest p=6742.75,6.05%, t=90 days 
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 ... 
Language Arts
its C 
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. 
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. 
Language arts
vwala 
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 ...