Wednesday
August 24, 2016

Homework Help: High School

Math
200 elementary school students were surveyed to find their blood groups. Of those, 55 were of blood group A, 85 of blood group B, and 21 of blood group O. What is the probability that a randomly chosen student has either blood group A or blood group B? A) 0.25 B) 0.60 C) 0.70 ...
Wednesday, October 14, 2015 by Hailey

English Comp.
(1) After Sean was arrested for breaking into a pawnshop, I began to wonder. (2) Why did some kids from my neighborhood end up in trouble while most of us didn't? (3) I started out with a question: What causes young people to make bad choices? (4) Now, after two years of ...
Wednesday, October 14, 2015 by Jasmin

Bule hora preparatory school
An ideal gas is sealed within a container at a tempreture of 17 degree celcies and a pressure of 101KPa. The container is heated until the tempreture of the gas reaches 100 degree celcies. A valve in the container is then opened to allow gas to escape until the pressure falls ...
Wednesday, October 14, 2015 by Bilisuma hussein

science
A heat engine draws 800J of heat from its high temperature source and discards 450J of exhaust heat into its cold temperature reservoir during each cycle.How much work does this engine perform per cycle?
Wednesday, October 14, 2015 by MARK

maths
every 2cm2 of cardbord has a mass of 1g.what is the mass of the cardbord to make the box.th e box is 16cm long 22 cm high and 4 wide
Wednesday, October 14, 2015 by lilly

chemistry
Use kinetic molecular theory to explain why approximating ideal behavior (PV=nRT) is fairly accurate only at low pressures and high temperatures. Use several concepts of kinetic molecular theory, not just math, to explain.
Tuesday, October 13, 2015 by Lay

LW Magnate School Aba. Nigeria
The wooden frame of a picture is 20cm long and 16cm wide. If the wood is 1.82cm wide, find the size of the picture. My working: The picture frame= L x W = 20x16= 320cm Wood frame= 1.82*2= 3.64cm 320cm less 3.68cm = 316.36cm.
Tuesday, October 13, 2015 by Treasure

Physics
The Asian Silver Carp is an invasive species of fish which has infested a number of American rivers. The disturbance of passing boats has been known to make these fish leap large distances out of the water. One such fish leaps with an initial velocity at the water's ...
Tuesday, October 13, 2015 by Mariah

Geometry 1 question
Use the truth table to test the validity of the following argument. If you play varsity sports, then you are dismissed from school an hour early. You are dismissed from school an hour early. Therefore, you are a varsity athlete. valid invalid Sorry about the repost:( But I ...
Tuesday, October 13, 2015 by SkatingDJ

Geometry
Name the Property of Equality that justifies this statement: x = x Reflexive Property Symmetric Property Transitive Property Substitution Property Use the truth table to test the validity of the following argument. If you play varsity sports, then you are dismissed from school...
Tuesday, October 13, 2015 by SkatingDJ

Chemistry
A compound frequently used as a high-temperature lubricant has the formula MS2, where M represents some metallic element. If this compound is 40.06% sulfur by mass, what is the identity of the metal M? I'm confused on how to figure this out.
Tuesday, October 13, 2015 by Anonymous

school of the nation
Marie gets $500 pocket money each day,she spends $300 each day. Write fractions to show the money spent and money left: (1) at the end of 1 day (2) at the end of 1 week
Tuesday, October 13, 2015 by martin

achimota secondary school
when a certain number is added to 11 and the result is multiplied by 3, the final result is 45. Find the number.
Tuesday, October 13, 2015 by wisdom

Math
1.)If a ping pong falls from the top of a building that is 168 feet high, how many seconds will it take the ball to hit the ground? remember, the formula for distance is D=16t2 A.)1 B.)3.2 C.)10.5 D.)16
Tuesday, October 13, 2015 by Douglas

Calculus
The height, s, of a ball thrown straight down with initial speed 32 ft/sec from a cliff 48 feet high is s(t) = -16t^2 - 32t + 48, where t is the time elapsed that the ball is in the air. What is the instantaneous velocity of the ball when it hits the ground?
Tuesday, October 13, 2015 by nrosen

Umvuzo secondary school
Life orientation.three ways on how air pollution impact negatively to the health of people in your community or school?
Tuesday, October 13, 2015 by Phumla

English (Check)
The title of my project says it all.. Women are most effected by the issues. The women right movement have been going on ever since the 1800’s. The natural rights for women should mean them getting equal pay, getting the same job as a man and women not being ...
Tuesday, October 13, 2015 by C

physics
a stone is dropped from the top of a cliff. it is seen to hit the ground 3.5 seconds later. how high is the cliff
Tuesday, October 13, 2015 by Anonymous

Stats
In an elementary school, 29% of children wear glasses. Suppose that a random sample of 31 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.
Tuesday, October 13, 2015 by Semmy

Montwood Middle school
What is 4/3,-0.09,1.3,85%,-3/8 ordered like in ascending order?
Monday, October 12, 2015 by Ashley

Physics
A baseball is hit off the edge of a cliff horizontally at a speed of 30 m/s. It takes the ball 3 seconds to reach the ground, with no air resistance. How high is the cliff wall?
Monday, October 12, 2015 by Francesca

Math
A football is punted into the air and it's height is given by the equation, h(t)=-4.9t^2 + 24.5t + 1 a)how high is it after 1 second? b)how long does it take to reach it's max height? c)what is it's max height? d)how long does it take to hit the ground?
Monday, October 12, 2015 by Basil

math
For every boy taking classes at the music school , there are 3 girls who are taking classes at the school . if there are 128 students taking classes , write and solve a proportion to predict the number of girls taking classes at the school
Monday, October 12, 2015 by kimberly

Physics
An autographed baseball rolls off of a 0.59 m high desk and strikes the floor 0.10 m away from the desk. How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.81 m/s^ Answer in units of m/s.
Monday, October 12, 2015 by Luma

Physics
A ball of mass 0.4 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker's foot is 17 m/s at angle of 35 degree above the horizontal. The top of the fence is 3 m high. The ball hits...
Monday, October 12, 2015 by Luma

math
A ball is dropped from the roof a building which is 256 m high. The height h of the ball at any instant t is described by h(t) = – 16t2 + 256 Find i) Instantaneous velocity of ball at t = 3 seconds ii) The time taken by ball to reach the ground level.
Monday, October 12, 2015 by malik

daffodils grammer school
Math The mass of 3dictionaries and 2textbook is 8kg
Monday, October 12, 2015 by alihaider

Rolya Grop Of School/English Language
Underline The Clause:i Belive That They Are Right
Sunday, October 11, 2015 by Gbadebo

Math
School is 2 miles from home along a straight road. The table shows your distance from home as you walk home at a constant rate. Time(mins): 10-20-30 Distnce(mi)1.5-1-0.5 1)Is the relationship in the table proportional? 2)Find your distance from school fro each time in the ...
Sunday, October 11, 2015 by Tim

ENGLISH GRAMMAR
FILL IN THE BLANKOF HOMOPHONE THE OF THAT SCHOOL IS VERY STRICT.
Sunday, October 11, 2015 by FILL IN THE BLANKOF HOMOPHONE

High School
What is the IUPAC name of CH3CH(C2H5)CH=CH(C2H5)CH3?
Saturday, October 10, 2015 by Izzy

physics
Pilots of high-performance fighter planes can be subjected to large centripetal accelerations during high-speed turns. Because of these accelerations, the pilots are subjected to forces that can be much greater than their body weight, leading to an accumulation of blood in the...
Friday, October 9, 2015 by Regheim Beck

math
The hieght of a model rocket is 4% of the height of the actual rocket.The model is 1.8 meters high. How high is the actual rocket?
Friday, October 9, 2015 by natalia

Social Studies
1. Which is not a factor contributing to poverty in Africa? a. long periods of drought and desertification b. a sudden decline in unemployment*** c.drastic increase in population leading to a shortage in available resources d. an inability to establish a diverse industrial ...
Friday, October 9, 2015 by Kaai97

Trig
Having completed another stimulating school day, Michael and Alyssia both leave at the same time. They walk together for a while and then go their separate ways. These paths make a 60° angle with one another. Michael toddles along at 2ft/sec, while Alyssia speeds off at ...
Friday, October 9, 2015 by Anon

precalc
Luke and Mason are standing 23 feet apart on the football field. Luke throws a high, slow pass to Mason. While the ball is in the air between them, each person notes the angle of elevation from himself to the ball. The angle of elevation from Luke is to the ball is 9°; ...
Friday, October 9, 2015 by jake

School
When given three given kinds of meat, three kind of cheese, and three kinds of bread of bread. Lisa can make 27 kinds of sandwich. I cannot figure out what piaget stage this is?
Friday, October 9, 2015 by M

P.E.
A very active person uses a large amount of energy and therefore has a high A. temperature** B. cholesterol level C. fat diet D. metabolism
Friday, October 9, 2015 by Raven

Algebra
I'm going back to school after 29 years and I feel so confused. Can you help me? There were 6205 CVS stores in the US in 2006 and 7703 CVS stores in the US in 2013. Write a linear equation in slope-intercept form that models this growth. Let x stand for the number of years...
Friday, October 9, 2015 by Madeline

prasanna high school
Subject:maths. question: the sum of first 6terms.of an aritmetic progression is 6.the product of 2nd term & 5th term is -80 find the terms of A.P.
Friday, October 9, 2015 by Anonymous

math
a pole of 50m high stand on a building of 250m high to an observer of at a height of 300 m, the building and the pole stands equal angles. what the distance of the obsrever from the top of the pole
Friday, October 9, 2015 by faizan

prasanna high school
Maths quection inam A.P. The sum of first six terms is 6an the product of second term and fifth term is -80. Find the terms of A.P.
Thursday, October 8, 2015 by ben

Physics
A ball thrown upward from the a point 7 meters below the bottom of a window rises past the window, which is 2.5 meters high, passing the window in 0.33 seconds. How fast was it going when it reached the bottom of the window, and with what velocity was it initially thrown upward?
Thursday, October 8, 2015 by Anonymous

Physics
You are standing on the roof of a building 300 m high, and throw a stone upward at 25 m/s. Find the speed of the stone as it strikes the ground.
Thursday, October 8, 2015 by Jean-Paul

math
A teacher charges php.500.00 per hour of tutorial service to a second year high school student. If she spends 3hours tutoring per day how much would she receive in 20days?
Thursday, October 8, 2015 by naevy

math, probability 4th grade
please check my answers and problem at the end , too! the cafeteria in the school offers 3 side items with the meal to the kids, among them: A. fries, B. carrots, C. macaroni, D broccoli, E. beans. how many choices each child have? - i think it is 10 because the order does not...
Wednesday, October 7, 2015 by edina

Math
A round silo is 55 feet tall and has a 18 foot radius. How high would a load of 31000 cubic feet of grain fill the silo?
Wednesday, October 7, 2015 by Julie

math
The middle school band has 56 members. The high school band has 96 members. the bands are going to march one after the other in a parade. the director wants to arrange the bands into the same number of columns. What is the greatest number of columns in which the two bands can ...
Wednesday, October 7, 2015 by bob

Physics
While playing lawn darts with his friend, Jack notices that when he throws a dart up at 60 degrees it travels 11 meters. How high did the dart travel
Wednesday, October 7, 2015 by Autumn

Quick english check
Use adapt, alleviate, anecdote, attributed, diminutive, distinct, endowed, enhance, facilitating, incantation, irony, linguistic, mitigates, ponderous, restitution, and resuscitate to put in the correct sentence. Please correct me if I’m wrong! On July19, 2015, the ...
Wednesday, October 7, 2015 by Anonyomous

English 1
DOES THIS SOUND GOOD? Revise the sentences below to improve fluency. Specifically, add variety to the sentence types, and use transitional words so that sentences flow smoothly. 18. Summer is my favorite season. I enjoy the warm weather. School ends. I like to go swimming, ...
Wednesday, October 7, 2015 by Blair

Middle School Math
The marching band is selling cases of fruit for $13 per case. a. Write an algebraic expression for the cost of f cases of fruit. b. Evaluate the expression for 250 cases. Question 17 options:
Wednesday, October 7, 2015 by Nicole

Reitumetse high school
Life sciences what is the difference between grassland/forest biomes.
Wednesday, October 7, 2015 by Precious

chem
The crucible is handled with oily fingers after its mass measurement but before the 3 gram sample of the hydrated salt is measured. Subsequently, in part B.1, the oil from the fingers is burned off. Will the percent water in the hydrated salt be reported as being too high, too...
Wednesday, October 7, 2015 by Diana

Ece
Which of the following is not suggested to help a preschooler to separate from their family with less difficulty? A. Meet with a child a few hours before school begins. B. Use transition materials. C. Encourage families to visit. D. Show foster acceptance of the child. I ...
Tuesday, October 6, 2015 by Jay

Geography
Construction of the Aswan High Dam did not provide the Nubian people with the predicted agricultural benefits. forced the Nubian people to relocate from their traditional homelands. provided the Nubian people with water for their traditional homelands. provided the Nubian ...
Tuesday, October 6, 2015 by SkatingDJ

English! HELP!!!
Can you please point out 3 cause and effect sentences in this passage: China Under Attack By Jonathan Miedel, Yough Middle School, Ruffsdale, Pa. Japan attacked China in 1937, launching the second Chinese-Japanese War. At first, Japanese forces overpowered the Chinese. But ...
Tuesday, October 6, 2015 by Amber

CHEMISTRY
is this right? 5. After heating the crucible is set on the lab bench where it is contaminated with the cleaning oil used to clean the lab bench but before its mass is measured. The analysis continues where the mass of the anhydrous salt is determined. While heating, the ...
Tuesday, October 6, 2015 by Diana

CHEMISTRY
I also need help in this please: Suppose the original sample is unknowingly contaminated with a second anhydrous salt. Will the reported percent water in the hydrated salt be too high, too low, or unaffected by its presence? Explain. is it low? if so, can you explain in some ...
Tuesday, October 6, 2015 by Diana

Chem
The crucible is handled with oily fingers after its mass measurement but before the 3 gram sample of the hydrated salt is measured. Subsequently, in part B.1, the oil from the fingers is burned off. Will the percent water in the hydrated salt be reported as being too high, too...
Tuesday, October 6, 2015 by Diana

Physics
A ball of mass 0.6 kg, initially at rest, is kicked directly toward a fence from a point 20 m away. The velocity of the ball as it leaves the kicker's foot is 17 m/s at angle of 45 degrees above the horizontal. The top of the fence is 6m high. The ball hits nothing while ...
Tuesday, October 6, 2015 by Sarah

Physics
A baseball is thrown at an angle of 29 degrees relative to the ground at a speed of 24.3 m/s. The ball is caught 51.0463 m from the thrower. The acceleration due to gravity is 9.81 m/s2 How high is the tallest spot in the ball's path? Answer in units of m
Tuesday, October 6, 2015 by Jessica

Algebra
Multi-Step The heights of the starting players for the Davis High School boy's basketball team are 78 1/2 in., 74 in., 71 5/8 in., 70 3/4 in., and 69 1/2 in. Find the average height of the starting players.
Tuesday, October 6, 2015 by Kay

Music
Which is an accurate statement? A high pitch will have a high amplitude. A low pitch will have a high frequency.<--- my answer A high pitch will have a high frequency. A low pitch will have a low amplitude.
Tuesday, October 6, 2015 by Sara

Science
How to high-tides change? How do Low-tides change? I would figure it would be the moon and sun, but I want other people's answers. (I thank all who answer)
Tuesday, October 6, 2015 by Shi Buringa

Goverment junior secondary school kwanpe(G.J.S.S K.)
Find the angle between two forces P,Q which has 30N and 27 respectively if the magnitude of the resultant force is 38N
Tuesday, October 6, 2015 by TIMNAN DAKAT

chem 121
A student rushed in order to complete this experiment quickly. In attempting to save time, the student made some procedural errors. Briefly describe the effect of each of the following errors on the calculated ratio of Mg to O (indicate whether the calculated ratio would be ...
Monday, October 5, 2015 by Anonymous

Pre-Cal
A drone 125 ft high sights a landing pad with an angle of depression of 15 degrees. what is the horizontal distance between the drone and the landing pad? I tried all the methods set it up multiple ways, and I'm at a loss. My teacher said the answer is 466.5ft.. but how? ...
Monday, October 5, 2015 by Anna

Physics
You are standing on the roof of a building 300 m high, and throw a stone upward at 25 m/s. Find the speed of the stone as it strikes the ground.
Monday, October 5, 2015 by Josh

Biology
a. A human cell is placed in a container of sugar water. Explain what would occur, if the cell membrane is impermeable to sugar. I know that the water in the cell is the high concentration and will go to the sugar water which is the low concentration. b. Another cell is placed...
Monday, October 5, 2015 by Judy

Math
If 10 classes in 10 schools receive 10 calculators each, which expression (10+10+10 or 10x3 or 1000 ) represent the amount of calculators the school discrit will buy.
Monday, October 5, 2015 by A

spanish
16. In Colombia, ________. (1 point) children are not required to go to school children are required to go to school until they are about 9 children are required to go to school until they are 14 children are required to go to school until they are about 18 17. What is one ...
Monday, October 5, 2015 by dea

help
Industrial workers often labored: A. for high wages. B. under ideal conditions. C. in well-ventilated factories. D. with unsafe machinery.
Monday, October 5, 2015 by american history

Statistics
If 12 women are randomly selected, what is the probability that their mean head circumference is between 21.8 in and 22.8 in.? If this probability is high does it suggest that an order of 12 hats will very likely for each of 12 randomly selected women? Why or why not? Assume ...
Sunday, October 4, 2015 by Kacey

zambia school
500ml of gas at 20 degrees celcius is under a pressure of 100cm of mercury what would be its volume at s.t.p?
Sunday, October 4, 2015 by Natalia

Algebra
A miniature rocket is launched so that its height in meters after t seconds is given by the equation h=-4.9t^2+29.4t+7. (a)draw a graph of the equation (b)how high is the rocket after 5 seconds? (c)what is the maximum height the rocket will attain? (d)how long after the launch...
Sunday, October 4, 2015 by Amy

Eligugu high school science
5 kg of steel is immersed in water at 2 degrees Celsius. what mass of water is required if the final temperature is 40 degrees Celsius?
Sunday, October 4, 2015 by Mandla

Eligugu high school physical science
A cannon with a mass of 10 tons fires a bullet horizontally with a mass of 50kg. The velocity of the bullet when it leaves the barrel of the cannon is 800 m / s. calculate the recoil velocity of the cannon.
Sunday, October 4, 2015 by Mandla

English IIB
It takes both bravery and self-sacrifice to be a hero. Heroes have the inner strength to stand up for their beliefs, even in the face of danger. Those who fight for a just cause may not always triumph in the end, but a hero will always triumph in spirit. The sacrifices made by...
Saturday, October 3, 2015 by nereyda

math
if the wall is 8 2/5 high and 18 1/3 long how do I calculate how much square foot is painted blue if 1/2 is painted?
Saturday, October 3, 2015 by denise

Physics
It is friction that provides the force for a car to accelerate, so for high performance cars the factor that limits acceleration isn't the engine; it's the tires. For typical rubber-on-concrete friction, what is the shortest time in which a car coukd accelerate from 0 ...
Saturday, October 3, 2015 by Lane

math
Question: For the competition, each band member needs $12 for food. To get to the competition, the school rents 3 buses that cost $580 each. Write and evaluate an expression for the three costs. - Answer: (75/12) + (3/580) = - Key: A school band has 75 members. The band enters...
Friday, October 2, 2015 by Anon

school for wildlife conservation
what is the meaning of global warming
Friday, October 2, 2015 by david

physics
a mango fruit drops to the ground from the top of its tree which is 5m high.how long does it take to reach the ground?
Friday, October 2, 2015 by adeoye

Health
So I'm suppose to make a post in my school about how to deal with stress. But I am always with stress and since I've turned very forgetful (I don't know why) I have forgotten how to cope with it. Any examples on how to deal with stress. Here, this is my assignment...
Friday, October 2, 2015 by Derpy Pegasus

Physics - Inverted pendulum
Hello. My son is in pre-school, but he's already starting his Undergraduate for college. Never too early to start, right? So he got this problem for homework. Can anyone help? He supposedly needed "nap time" and slept through the entire lecture the professor was ...
Friday, October 2, 2015 by John Cena

Chemistry
The density of water is 1gm/cm^3. Use the density and these dimensions to find the mass of the water in grams in a fish tank. Use the rules of significant figures and rounding to come up with the correct answer. 30 cm width * .075 meters length * 15 inches high I got 8572.5 ...
Thursday, October 1, 2015 by Anonymous

Your professinal image
The key to maintaining a strong self-esteem is A. being able to bounce back quickly from disappointments. B. not pursuing something once you've failed at it. C. telling yourself repeatedly that you're better than others. D. never allowing it to go up or down but ...
Thursday, October 1, 2015 by jennifer

physics
A skier leaves the top of a ski ramp at an angle of 25 degrees with an initial velocity of 10 m/s. The ramp is 60 m high, neglecting air resistance determine: a. The time it takes the sk ier to reach the ground. b. How far away from the base does he land? c. How high above the...
Thursday, October 1, 2015 by T

physics
A ball is kicked with an initial velocity of 20.0 m/s at an angle of 35 degrees to the ground. If it is to pass over a wall 5.6 m high determine a. The minimum horizontal the wall can be placed from the ball’s launch point in meters. b. What would be the ball’s ...
Thursday, October 1, 2015 by T

physics
A skier leaves the top of a ski ramp at an angle of 25 degrees with an initial velocity of 10 m/s. The ramp is 60 m high, neglecting air resistance determine:
Thursday, October 1, 2015 by T

Physics
Sam, whose mass is 71.0 kg , takes off down a 51.0 m high, 11.0 ∘ slope on his jet-powered skis. The skis have a thrust of 210 N . Sam's speed at the bottom is 41.0 m/s .
Thursday, October 1, 2015 by W

math
The ratio number of adults to students at the prom is 1:10. Last year there were 162 more students at the prom. If the school is expecting the same attendance this year,how many adults have to attend?
Thursday, October 1, 2015 by Dwan

math
If you have 4,358 students at one school and another school has 3times that many students, how many students are there?
Thursday, October 1, 2015 by Anonymously

math
If you have 4,358 students at one school and another school has 3times that many students, how many students are there?
Thursday, October 1, 2015 by Anonymous

Career
1.)your skills are the things (1 point) A.)Your like to do B.)You can do C.)That are most rewarding to you on the job D.)Regarding the ways you usually think and behave 2.)An event is probably a pride experience for you want to tell people which of the following A.)"I ...
Thursday, October 1, 2015 by YRN DJ

Chemistry
Mary was determining the density of a metal cylinder. When recording the diameter, she mistakenly recorded a number that was too small. Will her calculated value for density be too high or too low? Explain
Wednesday, September 30, 2015 by Anonymous

PHYSICS
A placekicker is about to kick a field goal. The ball is 20.1 m from the goalpost. The ball is kicked with an initial velocity of 18.7 m/s at an angle θ above the ground. Between what two angles, θ1 and θ2, will the ball clear the 3.12-m-high crossbar? Give your...
Wednesday, September 30, 2015 by Tori

Math help
Mt. Everest is more than 8000 m high. How fast would an object be moving if it could free fall to sea level after being released from an 4750-m elevation? (Ignore air resistance) How would I solve this?
Wednesday, September 30, 2015 by Hanna

international school dammam
if zeroes of p(x)=5x^2-7x+k are reciprocal of each other then find value of k
Wednesday, September 30, 2015 by noaf

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