Saturday
September 5, 2015

Homework Help: High School

statistics
For classes of 273 students, find the mean and standard deviation for the number born on the 4th of July, Ignore leap years. For a class or 273 students, would two be an unusually high number who were born on the 4th of July? I don't know how to find how many out of 273 ...
Friday, February 27, 2015 by slomomo

Statistics
1200 high school freshman were randomly selected for a national survey. Among survey participants, the mean grade-point average was 2.8, and standard deviation was 0.6. What is the margin of error, assuming a 95% confidence level?
Friday, February 27, 2015 by Isabel

Science
Hormones and Homeostasis 1) The human endocrine system is made up of which of the following structures? :Vessels. :Receptors. :Glands.*** :Chambers. 2. Which of the following best describes the function of the endocrine system? :It secretes chemical messengers that travel ...
Friday, February 27, 2015 by TheLOUDEST_0430

Statistics
A criminologist is studying school violence, she selects a random sample of 25 adolescents aged 12 to 15 from a local middle school and asks the following,"How many times within the past school year have you been physically assaulted at school? She calculated the ...
Friday, February 27, 2015 by Elena

Math
What is the potential energy in a body of mass 5kg on top of a pole 20metres high ?
Friday, February 27, 2015 by Hiuwen Chetia

algebra
Plus or minus of 0.05: As measured in standard deviations, how much is a year of learning in school worth on a test? Please answer with a decimal.
Friday, February 27, 2015 by shana

Math
Fran wants to cover a rectangular box with contact paper. The box is 10cm long, and 5cm wide and 5cm high. How much paper will she need to cover all 6 sides?
Thursday, February 26, 2015 by Amy

Math
The table below shows the number of students from different classes of two schools who participated in a sports competition: School A 25 21 2 22 20 21 20 23 1 School B 3 2 1 5 4 2 3 4 3 Part A: How can you use box plots to compare the median and interquartile range of the data...
Thursday, February 26, 2015 by Bella

school of science and tech
Solve the set of linear equations by the matrix method : a+3b+2c=3 , 2a-b-3c= -8, 5a+2b+c=9. Sove for c 3
Thursday, February 26, 2015 by Anonymous

math
Organizer of school graduation does have three sections of chairs. 1120 chairs are arranged for graduates, 1400 for invited guests and 896 for lecturers. If all rows have same number of chairs, calculate the greatest number of chairs in each row if no chairs are left over? ...
Thursday, February 26, 2015 by vizzy

math
Write Equation to Represent Situation: In the school band, there are 5 trumpet players and f flute players. There are twice as many flute players as there are trumpet players. THANK YOU
Wednesday, February 25, 2015 by kymy

English
Which sentence would be correct? a) It has been some time since I attended school. b) It has been sometime since I attended school. Thank you!
Wednesday, February 25, 2015 by Anonymous

Science
A sled and rider with a combined weight of 59 kg are at rest on the top of a hill 24 m high. (a) What is their total energy at the top of the hill? (b) Assuming there is no friction, what would the total energy be on sliding halfway down the hill?
Wednesday, February 25, 2015 by holly

social studies
why does oil bring wealth to Arabia and Iraq? A.abundance of wells B.low cost of production C.high global demand D.scarcity of water
Wednesday, February 25, 2015 by Hannah

Physics
The bird perched on the swing shown below has a mass of 42.7 g, and the base of the swing, y = 7.54 cm below the hook, has a mass of 133 g. The swing and bird are originally at rest, and then the bird takes off horizontally at 2.04 m/s. How high will the base of the swing rise...
Tuesday, February 24, 2015 by Terence

english
please clarify : 1. i am suffering from high fever 2.i am suffering with high fever
Tuesday, February 24, 2015 by r s telagathoty

alg 2
The path that a football takes can be described by the euation h=25t-5t^2 where h is the height in meters, of the football, at t, in seconds. How high is the ball after 3 seconds? h+25t-5^2 h= 25(3)-5(3)^2 h= 75- 45= 30 m
Tuesday, February 24, 2015 by pb

Socials
A few days ago I posted a question about an immigration diary during the great migration period(I will link it in a comment below) in which Ms Sue and Reed replied with some tips- thank you. I am starting to write some of the diary and I still have a few questions that I have ...
Tuesday, February 24, 2015 by Lily

physics
A 21.0-kg child descends a slide 2.20m high and reaches the bottom with a speed of 1.40m/s . How much thermal energy due to friction was generated in this process?
Monday, February 23, 2015 by Melissa

3rd grade math
There are 24 students in Ms. Messing's class. Six more students walk to school than ride their bikes. The number of students that ride their bikes is the same as the number of students that are driven to school. How many students walk to school? Please only use addition ...
Monday, February 23, 2015 by Dawn

English
Okay, So I didn't post this one because I thought I had it right.. but now im unsure. My school appeared on the news last week because we had made an important change in our community. Our 8th grade class had planted a large garden in what was once only a vacant lot. It ...
Monday, February 23, 2015 by Zhana

Intro to stats
A comprehensive study of juvenile delinquency is conducted in every state-run reform school in Australia. A scale called the Antisocial Beliefs Scale is given to all juvenile delinquents. The mean (μ) of the scale is 60 and the standard deviation (σ) is 6. Assuming ...
Monday, February 23, 2015 by Soledad

Psych 42 (Stats)
A comprehensive study of juvenile delinquency is conducted in every state-run reform school in Canada. A scale called the Antisocial Beliefs Scale is given to all juvenile delinquents. The mean (μ) of the scale is 71 and the standard deviation (σ) is 5. Assuming that...
Monday, February 23, 2015 by Dany

psychology 110 chapter 7
When Gina looks at an old photograph of her high school graduating class, a flood of memories comes rushing back. Gina finds herself going from one memory to the next. According to memory research, this process is referred to as ____________________.
Sunday, February 22, 2015 by Anonymous

English
What sentence type is this? Gas prices are very high right now, consumers are looking for cars that get high miles per gallon.
Sunday, February 22, 2015 by Lisa

Math
The ratio of boys to girls in the checkers club at one school is 2:3. the number of club members is more than 20 and fewer than 30. how many club members are there?
Sunday, February 22, 2015 by Sam

science
The position-time graph for a tennis ball thrown vertically upwards from the second floor of a school building is shown below.ignore all effects of air friction.The height of the second floor is 6,5m.The ball rises 0,9 m from the point of projection before it starts to fall to...
Sunday, February 22, 2015 by ntando

Physics
A 65.0 kg skier with an initial speed of 11.0 m/s coasts up a 2.50 m high rise as shown in Figure 6.23. Find his final speed at the top, given that the coefficient of friction between her skis and the snow is 0.0800.
Sunday, February 22, 2015 by Andrew

Science
Directions: How high could your animal jump if it has an initial velocity of 20m/s? Average Mass of Animal: (800kg) (1100lbs) Jupitar’s Mass: 1.898E27 kg (317.8 mass)
Sunday, February 22, 2015 by Steffy

science
A ball is dropped from a height of 10 m. If the energy of the ball reduces by 40% after striking the ground, how much high can the ball bounce back? (g=10m/s2)
Sunday, February 22, 2015 by Anonymous

Statistics
A) Identify the question, population, and sample. b) Discuss any potential bias or lurking variables that may affect the results.? c) Write about the extent to which we can generalize the findings to all people who use cell phones. Stewart Fist reported the results of an ...
Saturday, February 21, 2015 by Tamcia

Business math
The clarkdell school system has three schools. School #1 has 500 students School #2 has 600 students School #3 has 400 students What part of a $15,000 allocation will go to school #2? 15,000 divide by 3= $5,000 Will you check my answer?
Saturday, February 21, 2015 by Devon

English
Can someone read my eight sentence paragraph. A high school diploma is very important to me. With a high school diploma I can show my children that your never to old to go back to school. Which will set a good example for my children to show them they need to follow their ...
Saturday, February 21, 2015 by Rebecca

physics
A ball is thrown straight up from the ground at 10m/s, and simultaneously a ball is thrown straight down a 10m-high ledge at 10m/s. At what height do the two balls pass?
Saturday, February 21, 2015 by vera

Urgent maths homework help
At a boarding school, in the evening, 9 students always take walks in groups of 3. How can the groups be arranged so that each person walks in a group with every other person exactly once in 4 days? I would like to know whether there is a trick to these type of questions. My ...
Saturday, February 21, 2015 by paul

Maths
At a boarding school, in the evening, 9 students always take walks in groups of 3. How can the groups be arranged so that each person walks in a group with every other person exactly once in 4 days? I would like to know whether there is a trick to these type of questions. My ...
Friday, February 20, 2015 by Yasmin

Math
A roll of paper towels is 10 inches high and 2.5 inches in diameter. How many full squares inches of paper towel can fit on the roll in 15 rotation? * all I need is a formula of this question. Do I use lateral surface area formula or total surface area formula
Friday, February 20, 2015 by Daisy

Socials
Note: My questions are below mostly in brackets and at the very end! I have to do an immigration diary assignment and I am to portray a young 12 year old girl(any English name suggestions?) from a city in England(what is a realistic city during that time?) who is migrating to ...
Friday, February 20, 2015 by Lily

History
Social Reform 1) New harmony, Indiana, was an example of a... :Revival. :Frontier camp. :Utopia.*** :College. 2) Who was the leader of education who lengthened the school year to six months? :Lyman Beecher. :Horace Mann.*** :Charles Finney. :Dorothea Dix. 3) Margaret Fuller, ...
Friday, February 20, 2015 by TheLOUDEST_0430

chemistry
I have questions but I don't understand this passage. Could you give a summery? Here are the question 1. One problem the researchers faced was an uncertainty about whether the signals observed in certain mass spectrometry data were, in fact, due to lead isotopes. Explain ...
Friday, February 20, 2015 by Morgan

College Alegebra
a 23 foot ladder is placed against a vertical wall of a building with the bottom of the ladder standing on level ground 18 feet from the base. how high up the wall does the ladder reach?
Friday, February 20, 2015 by k

Social Studies
8.How did Islam mainly spread throughout the region? by imperial command through military strength **** via trade because of religious decree 9.Which of the following had the most impact on the drawing of modern borders in Southwest Asia? British mandate **** tribal ...
Friday, February 20, 2015 by Please Check Answers

Math
A sample of 50 children had one child that is left-handed. If there are 750 children in a school, how many should be left-handed?
Friday, February 20, 2015 by Alexgc

Math
In the formula d = rt, the time t varies inversely with the rate r. A student running at 5 miles per hour runs one lap around the school campus in 8 minutes. If a second student takes 10 minutes to run one lap around the school, how fast is she running?
Thursday, February 19, 2015 by PLEASE HELP I NEED ANSWERS NOW

Math
In the formula d = rt, the time t varies inversely with the rate r. A student running at 5 miles per hour runs one lap around the school campus in 8 minutes. If a second student takes 10 minutes to run one lap around the school, how fast is she running?
Thursday, February 19, 2015 by Brooke

math
Consider a slide shaped like a right triangle. The base of the slide is 45 feet away from the ladder. The top of the slide is 20 feet high. a) What is the slope of the slide. b) write an equation for the line that the slide would form. c) Lets say you were standing at the ...
Thursday, February 19, 2015 by kat

math
Consider a slide shaped like a right triangle. The base of the slide is 45 feet away from the ladder. The top of the slide is 20 feet high. a) What is the slope of the slide. b) write an equation for the line that the slide would form. c) Lets say you were standing at the ...
Thursday, February 19, 2015 by kat

Physics
Hi, just need a little help with this physics question please. A cylindrical tank of water is located 68m deep in water. An air lock at the bottome of the tank allows access. The sailor must wait while the air pressure in the lock is increased until it equals the water ...
Thursday, February 19, 2015 by Sally

physics
A football is thrown with an initial upward velocity component of 13.5m/s and a horizontal velocity component of 16.5m/s How much time is required for the football to reach the highest point in its trajectory? How high does it get above the ground?How much time after it is ...
Wednesday, February 18, 2015 by luis

Social Studies
1. Which of the following helped to increase the populations of northeastern cities? (1 point) more diversity successful cotton crops growth of factories and trade building of the Erie Canal 2. A boundary was set between Canada and the United States as a result of (1 point) ...
Wednesday, February 18, 2015 by JayyVonMonroe

Math
Peter wants to hang his paintings on a wall that is 2 1/2 meters high and 5 1/2 meters wide. He hangs four paintings, each of which is 1 1/4 meters high and 2/3 meter wide. what area of the wall is NOT covered by paintings?
Wednesday, February 18, 2015 by Derrianna

Social Studies
15 In which type of city government does the mayor have the power to veto legislation A. Council manager B. City consolidated C. Weak mayor council D. Strong mayor council******* 16 Which is not true of both city and county government in Georgia A. Both can collect taxes...
Wednesday, February 18, 2015 by BUBBLES

Social Studies
Please I need help on 2nd set of questions. Thank you in advance! 8 Which behavior is an example of a delinquent behavior according to Georgia’s juvenile justice system A.Stealing from a store***** B.Refusing to go to school C.Disobeying ones parents D.Running away from ...
Wednesday, February 18, 2015 by BUBBLES

algebra
if a school has 24 teachers and 480 students, what is the ratio of teachers to students?
Tuesday, February 17, 2015 by stephanie

English
Would these be good examples of hopelessness, hope, and realism in A raisin in the Sun 1. hopelessness Mama :Well whether they drinks it or not ain't none of my business. But whether I go into business selling it to 'em is, and I don't want that on my ledger this ...
Tuesday, February 17, 2015 by Amy

Physics 202
A rail gun uses electromagnetic forces to accelerate a projectile to very high velocities. The basic mechanism of acceleration is relatively simple and can be illustrated in the following example. A metal rod of mass 10.0g and electrical resistance 0.100Ω rests on ...
Tuesday, February 17, 2015 by Tiffany

College Algebra
Flight of a Ball If a ball is thrown upward at 96 feet per second from the top of a building that is 100 feet high, the height of the ball can be modeled by S(t)=100 + 96t -16t^2 feet, where t is the number of seconds after the ball is thrown. How long after the ball is thrown...
Tuesday, February 17, 2015 by Bridgett

physics
43. A block of mass 2.00 kg rests on a ramp tilted at 25.0°. Coefficients of friction for the block/ramp: μs = 0.300, μk = 0.100. A string passing over a high quality pulley connects the block with a bucket as shown below. The bucket contains sand but a hole is ...
Tuesday, February 17, 2015 by Devin

math
Gary measured the middle school and made a scale drawing. He used the scale 1 inch = 5 feet. The gym is 85 feet long in real life. How long is the gym in the drawing?
Tuesday, February 17, 2015 by Anonymous

physics
An object 5 cm high is placed at a distance of 60 cm in front of a concane mirror of focal length10cm .Find the position and size of image
Tuesday, February 17, 2015 by sumit

Science
Getting Oxygen 1) Name the components of the respiratory system in the order incoming air would encounter them during breathing. :Trachea,pharynx,larynx,alveoli,bronchi.​ :Bronchi,larynx,alveoli,trachea,pharynx.​ :Larynx,trachea,bronchi,pharynx,alveoli.​ :...
Tuesday, February 17, 2015 by TheLOUDEST_0430

english check answers
Over the past ten years more than two dozen athletes have died from the medical condition known as heatstroke. Heatstroke occurs when the body’s internal temperature becomes so elevated that its cooling system begins shutting down. Who is most at risk? Surprisingly, it is...
Tuesday, February 17, 2015 by Robb4301

tec
What is an AUP? the abbreviation for the school administrator in an online education environment a document outlining what is acceptable behavior when using the Internet for schoolwork a policy outlining the proper formatting to use in Microsoft® Office documents for ...
Tuesday, February 17, 2015 by help?thanks

Algebra 1
The attendances at a high school basketball games seems to be affected by the success of the team. Look at the table and decide what function would represent the data shown. attendance 150 200 250 300 350 wins 2 4 6 8 10 a) a=2(3)^g b) a=-25g+100 c) a=25g^2+100 d) a=-25g^2+100
Monday, February 16, 2015 by Steve

physical science
How high is a building when an anvil takes 4 seconds to hit the ground? How long will it take a piano to hit the ground when dropped off a building 103 meters high?
Sunday, February 15, 2015 by laura

PED 212
What are some pros and cons in relevance within a school environment in organized sports?
Sunday, February 15, 2015 by Monica

maths
The top of a T.V tower casts a shadow of 35 metres long when the angle of elevation of the sun 57°40'.How high is the top of the tower?
Sunday, February 15, 2015 by Anonymous

science
a ball is dropped fron a building which is 50 metres high.calculate the ball's velocity just before it hits the ground.ignore air resistance
Sunday, February 15, 2015 by judith

Math
So far john has run 1/4 of the way to school and walked 3/8 of the way.What fraction of the distance to school does john have left?
Saturday, February 14, 2015 by Anonymous

physics
A batted baseball leaves the bat at an angle of 33.0∘ above the horizontal and is caught by an outfielder 380ft from home plate at the same height from which it left the bat. 1. What was the initial speed of the ball? 2. How high does the ball rise above the point where ...
Saturday, February 14, 2015 by chibest

Physics
Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. All he has to use, however, is a baseball, a stopwatch, and a friend on the ground below with a long measuring tape. Bob is a pitcher, and knows that the fastest he can ...
Friday, February 13, 2015 by Breauna

Constitutional Law
If a professor at a public school imposes a policy barring students from wearing all types of hats in the classroom, this would most appropriately be labeled as a: A. regulation of protected speech. B. ban on protected speech. C. content-based limitation on political speech. D...
Friday, February 13, 2015 by Amy

physics
Stone dropped from top of a tower 100m high. At same instant another stone is thrown vertically from base of the tower with a velocity of 25m/s. When and where will the two stones meet? Given g =10 m/s^2
Friday, February 13, 2015 by Nikhil

physics
Stone dropped from top of a tower 100m high. At same instant another stone is thrown vertically from base of the tower with a velocity of 25m/s. When and where will the two stones meet? Given g =10 m/s^2
Friday, February 13, 2015 by Anonymous

physics
In driving the usual route to school, a student computes his average speed to be 26 km/h. In a hurry to get home that afternoon, he wants to average 30 km/h for the round trip. What would his average speed for the return trip over the same route have to be in order to do this?
Friday, February 13, 2015 by jyothi

physics
A 3.6 kg rock is initially at rest at the top of a cliff. Assume that the rock falls into the sea at the foot of the cliff and that its kinetic energy is transferred entirely to the water. How high is the cliff if the temperature of 1.1 kg of water is raised ...
Thursday, February 12, 2015 by Anonymous

Algebra 1
Julia's school is selling tickets to a play. On the first day of ticket sales the school sold 6 adult tickets and 2 student tickets for a total of $40. The school took in $85 on the second day by selling 5 adult tickets and 12 student tickets. What is the price each of one...
Thursday, February 12, 2015 by Lyric

science
Im doing a poster for school and its about when a candle is alight and I don't under stand it could you please help
Thursday, February 12, 2015 by skyler

Science
Air, like other gases, flows from a region with ________. A. Lower pressure to a region with higher pressure B. No pressure to a region with high pressure C. Little pressure to a region with high pressure D. Higher pressure to a region with lower pressure
Thursday, February 12, 2015 by Diana

Statistics
above average warmth extended over the east and southeast on Jan.13, 2005.The days forecasted high temperatures in four cities in the affected area were as follows: Burlington, Vt. 55 degrees F, Durham, N.C. 74 degrees F, Williamsburg, Va. 74 Degrees F., and Augusta Ga., 75 ...
Thursday, February 12, 2015 by Phyiss

geluksdal secondary school
Explain how you can determine the number of neutrons in an atom
Thursday, February 12, 2015 by monica

AP LIT
A VALEDICTION FORBIDDING MOURNING by John Donne As virtuous men pass mildly away, And whisper to their souls to go, Whilst some of their sad friends do say, "Now his breath goes," and some say, "No." So let us melt, and make no noise, [5] No tear-floods, ...
Thursday, February 12, 2015 by Sam Eaton

math
Show how to write and evaluate an expression to represent and solve this problem: Jeff and his friend each text four classmates about a concert. Each classmate then texts four students from another school about the concert. If no one receives the message more than once, how ...
Wednesday, February 11, 2015 by kyle

rubidoux high school
Susan is putting money into a checking account. Let y represent the total amount of money in the account (in dollars). Let x represent the number of weeks Susan has been adding money. Suppose that x and y are related by the equation = + 30 x 350 y
Wednesday, February 11, 2015 by jessica mendez

english
write a letter to your friend in another school telling him/her at least three ways you find life in the final year class is different from being in the class
Wednesday, February 11, 2015 by Max okofo darteh

physics
Guy has to get a piano onto a 2.4 m high platform. He can use a 3.0 m long frictionless ramp or a 4.0 m long frictionless ramp. Which ramp will Guy use if he wants to do the least amount of work? Either ramp as the work done is same in both cases. The shorter ramp will require...
Tuesday, February 10, 2015 by mathew

algebra
A school has a classroom with a length eight feet less than twice the width. If a group of parents purchased 400 square feet of carpet for the room, what is the approximate length of the room? L=2W-8 L*W=400 (2W-8)W=400 2w^2-8w=400
Tuesday, February 10, 2015 by Sierra

math
Show how to write and evaluate an expression to represent and solve this problem: Jeff and his friend each text four classmates about a concert. Each classmate then texts four students from another school about the concert. If no one receives the message more than once, how ...
Tuesday, February 10, 2015 by kyle

Math
On the moon the acceleration due to gravity is 5 ft/sec2. An astronaut jumps into the air with an initial upward velocity of 8 ft/sec. How high does she/he go? How long is the astronaut off the ground?
Tuesday, February 10, 2015 by Cole

anthrpology
Is my answer correct. I can't found Confederacies 1.Discuss the differences between bands, tribes, chiefdoms, confederacies, and states. Then indicate what roles kinship and associations play in each of these systems Band: small kin-based group among scavengers. About ...
Tuesday, February 10, 2015 by jimmy

Calculus
Use a(t)=-32 ft/second squared as the acceleration due to gravity. A ball is thrown vertically upward from the ground with an initial velocity of 96 feet per second. How high will it go?
Monday, February 9, 2015 by Anonymous

algibra
The number of students in each homeroom class in Jim’s school is shown in the stem-and-leaf plot below. Number of Students in Each Homeroom Class 1 7 8 8 9 9 2 0 2 3 4 5 8 8 8 3 2 3 4 7
Monday, February 9, 2015 by ok

Physics
Calculate the final speed of a skier who skis down a 70.8 m high hill, if her initial speed is 2.18 m/s
Monday, February 9, 2015 by Jessy

math
At the first meeting of the chess club, the 10 members decided that everyone in the club should play everyone else one time to determine the best players for the inter-school competitions. How many games had to be played?
Monday, February 9, 2015 by sandra

engineering science n2
A stone with a mass of 6kg is thrown vertically upwards from the top of a building 35m high with a starting velocity of 20m/s. The time it will take to reach its maximum height
Monday, February 9, 2015 by mpume

English
An upper-secondary school is a senior high school. Then is a lower-secondary school a junior high school? Where is the expression 'a lower-secondary school' used?
Sunday, February 8, 2015 by rfvv

English
In a well organized essay, analyze the language and rhetorical devices the narrator uses to convey his attitude toward Hester and toward women in general I felt that my previous thesis was not strong at all and I would like to change it and make it better. Through the use of ...
Sunday, February 8, 2015 by Amy

Math
There are 750 students in a school. If the number of girls is 120 more than the boys, how many boys are there in the school?
Sunday, February 8, 2015 by Student

math
Show how to write and evaluate an expression to represent and solve this problem: Jeff and his friend each text four classmates about a concert. Each classmate then texts four students from another school about the concert. If no one receives the message more than once, how ...
Sunday, February 8, 2015 by kyle

statistics
Suppose we want to estimate the average number of purchases in a given hour in a local convenience store. Using this example describe in your own words how you would go about determining this average through: A.) Drawing a random sample: Drawing a random sample would be the ...
Sunday, February 8, 2015 by slomo

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