Thursday
December 8, 2016

Homework Help: Health: First Aid

Recent Homework Questions About First Aid

AP Calculus
I am doing the 100 meter men's freestyle swimming lab (in case you know what I am referring to) and I need to fibd the lower limit analytically. I am given a table of data containing the years after 1900 and the time in second of each country , for example: Time. Country. ...
Saturday, November 26, 2016 by Mary

math
Thr sum of three numbers is 33.The first no.is twice the third no.The second no.is one more than the first.Determine the nos.
Saturday, November 26, 2016 by Anonymous

Calculus AB
Could someone please help me with these tangent line problems? 1) Find the equation of the line tangent to the given curve at the indicated point: 3y^3 + 2x^2 = 5 at a point in the first quadrant where y=1. 2) Show that there is no point on the graph of x^2 - 3xy + y^2 = 1 ...
Friday, November 25, 2016 by Annie

calculus
Find the area of the region cut from the first quadrant by the curve r=2(2-sin2?)½
Friday, November 25, 2016 by Saud

English
1. Yosemite is famous for its natural wonders. 2. We arrived at Yosemite in the afternoon. ===================== In the sentences above, what does "Yosemite" mean? Is it Yosemite Valley or Yosemite National Park? - Anonymous, Wednesday, November 11, 2015 at 1:05am ...
Friday, November 25, 2016 by rfvv

Circuits and electronics applications3
We are working on finding the particular solution for the first-order linear constant-coefficient ordinary differential equation: RCdvP(t)dt+vP(t)=Vicos?(?t) The new idea is to find the particular solution for the related equation RCdvPS(t)dt+vPS(t)=Viest because we expect ...
Friday, November 25, 2016 by sengeni

Circuits and electronics applications3
We are presented with a familiar first-order circuit: a capacitor driven by a Thevenin source. Now we have a sinusoidal drive that starts at t=0. so the differential equation is RCdv(t)dt+v(t)=vI(t)=Vicos?(?t)u(t) and we are given the initial state v(0?)=0. We know how to ...
Friday, November 25, 2016 by sengeni

Circuits and electronics applications3
Figure 1 below shows the circuit we'll be using to explore the step response of an RLC circuit. The voltage source produces a 1V step at t=0. Initially the resistor has been set to 0?. We'll be probing the voltage across the capacitor, which will indicate the amount of...
Friday, November 25, 2016 by sengeni

Math grade 5, two-part problem
The ratio of the number of lisa's pens to the number of adeline's pens was 2:3 at first.after father gave lisa another 16 pens,the ratio became 2:1 A.how many pens did adeline have? B.if adeline gave away 6 pens,what would be the new ratio of the number of lisa's ...
Thursday, November 24, 2016 by Peachie

math!
You have 48 minutes to take an exam of 21 questions. After you finish the first 10 questions, you realize you must answer the remaining questions twice as fast to finish the exam. How many questions per minute were you answering? Also, how many questions per minute must you ...
Wednesday, November 23, 2016 by Lewis

Math grade 9
James and slyvie need to paint the line around the soccer field. To know how much paint to buy they must find out the perimeter of the field. James claims, "I can calcuate the perimeter of the field by using the formula P= 2(l+w) while slyvie says that the correct formula...
Wednesday, November 23, 2016 by Please can someone explain

simplex method
Maximize P=60x+50y. ? ?x+y?80 ? ?5x+10y?560 ? ?50x+20y?1600 ? ?x?0 ? ?y?0 ? ? ? ? ? ? ? Use the simplex method to solve the problem. Use s, t, and u as your slack variables for the first, second, and third inequalities respectively. Use the final simplex tableau to identify ...
Wednesday, November 23, 2016 by Anonymous

Trigonometry
All values of theta are positive. From left to right, the first peak occurs at (pi/2,1) and the second peak occurs at (9pi/2). A. Write the graphs equation as a cosine function. B. Write the graphs equation as a sine function.
Wednesday, November 23, 2016 by Mark

Algebra 2
You have 48 minutes to take an exam of 21 questions. After you finish the first 10 questions, you realize you must answer the remaining questions twice as fast to finish the exam. How many questions per minute were you answering?
Wednesday, November 23, 2016 by Lewis

business maths
Susan would like to set up an endowment fund which would award a student with a scholarship of $500 at the end of each year. The scholarship will continue in perpetuity. The interest rate is 6% compounded semi-annually, and the first award is made one year from today. How much...
Wednesday, November 23, 2016 by kiran

maths
If the ninety term of an A.P is 30, find the Sum of its first seventeen terms
Wednesday, November 23, 2016 by bhavika

physics
Two forces are applied to a 0.5 kg hockey puck causing it to accelerate. The first force has a magnitude of 10.0 N and is applied to the puck at an angle of 80 degrees with respect to the x axis. The second force has a magnitude of 3.5 N and is applied to the puck at an angle ...
Tuesday, November 22, 2016 by Mark

chemistry
Changing 1 mol of Mg(s) and 1/2 mol of O2 (g) to gaseous atoms requires a total of approximately 150kJ of energy. The first and second ionization energies of Mg are 737kJ/mol and 1450kJ/mol respectively. The first and second electron affinities of Oxygen are -141KJ/mol and +...
Tuesday, November 22, 2016 by Insolvable question

Language arts(Anyone) (connexus)
1.Which sentence contains an opinion? A.Maria Tallchief was born in 1925. B.She was a Native American woman and a ballet dancer. C. Maria was the first prima ballerina of the New York City Ballet. D.She is the best ballerina to ever dance for New Your City Ballet* And if you ...
Tuesday, November 22, 2016 by BOSS man

Physics
A steel spring is hung vertically. Using a ruler, the lower end of the spring was measured to be 25.0cm from its upper end. However, when an object of mass 0.500kg it attracted to the lower end of the spring the spring stretches to a new length of 45.0cm. With the aid of a ...
Tuesday, November 22, 2016 by grace777

American government
How have NATO's operations changed over time ? A.) NATO only directs peacekeeping measures now B.) NATO no longer defends Western Europe C.) NATO has fewer member countries now than when it began D.) NATO's activities now include crisis management and peacekeeping ...
Monday, November 21, 2016 by Taylor

american goverment check answers
9. What criteria might a judge who abides by a philosophy of judicial restraint use to decide a case? (1 point) The judge would consider previous court decisions on the topic but ultimately consider the current circumstances and changes in society. The judge would not consider...
Monday, November 21, 2016 by Anonymous

Math
Michael purchased a certain number of share of one stock for a total of $308. The second stock was selling for $3 less per share . Michael could have bought 6 more shares of the second stock for the same amount of money. How many shares of the first stock did Michael purchase...
Monday, November 21, 2016 by Khalilah

Math
From left to right the first three digits of a 4 digits number add up to 8 which digits could be in the ones place if the 4 digit number is divisible by 6
Monday, November 21, 2016 by Jenny

Science
1.Which of the following gases was most likely present in Earth's earliest atmosphere? A. nitrogen B. hydrogen* C. argon D. oxygen 2. Which of the following statements accurately describes the development of the geologic time scale? A. Scientists developed the geologic ...
Monday, November 21, 2016 by help me plss

Science plsss help!
1.Which of the following gases was most likely present in Earth's earliest atmosphere? A. nitrogen B. hydrogen* C. argon D. oxygen 2. Which of the following statements accurately describes the development of the geologic time scale? A. Scientists developed the geologic ...
Monday, November 21, 2016 by PLease help me 6 science!!

American government
American foreign aid might be used to support which of the following foreign policies? A) Deterrence B) Containment C) Collective Security*** D) Isolationism
Monday, November 21, 2016 by .....

ss
1.Who Were Among the first permanent White settlers in Oregon. A.Farmers B.Trappers C.Missionaries D.traders 2.What was the Rendezvous and why was it important to the maintain men a:it was the largest trading company in the west and the mountain men traded their pelts to the ...
Monday, November 21, 2016 by hehell

American Government
"With the existing colonies or dependencies of any European power we have not interfered and shall not interfere....Our policy in regard to Europe...Remains the same, which is, not to interfere in the internal concern of any of its powers..." 1) Which American ...
Monday, November 21, 2016 by Juliet

Science
Balance chemical equations using the first 20 elements
Monday, November 21, 2016 by Clinton Darlington Yartey

Math
Two hot air balloons are in flight above a field. The first Balloon is 30 meters above the ground rising 25 meters per minute. The Second Balloon is 300 meters above the ground descending 20 meters per minute. When will the 2 balloons be at the same altitude? What would be the...
Monday, November 21, 2016 by jen

American Government
With the existing colonies or dependencies of any European power we have not interfered and shall not interfere....Our policy in regard to Europe...Remains the same, which is, not to interfere in the internal concern of any of its powers. 1. Which American foreign policy does ...
Sunday, November 20, 2016 by Alice Keign

Econ check my answers please
Below are a few questions I had difficulty with so please check my answers and correct me if I am wrong, thanks :) 1. Kim, a public relations manager, has just completed the process of checking the references of several job candidates. What should she do next? Select one: A. ...
Sunday, November 20, 2016 by Raye

math
What is the connection between the solutions of the equation ax^2 + bx + c = 0 and the x intercepts of the graph of f(x) = ax^2 + bx + c? The solution says: The solutions of the equation are the first coordinates of the x intercepts. I did the solutions to the formula but do ...
Sunday, November 20, 2016 by Carly

Math
A person deposited 100000 in a bank for three years. The Bank paid interest at 8% per annum compounded half yearly during the first year and at 12% per annum compounded quarterly during last 2 years.What is his balance after 3 years
Sunday, November 20, 2016 by Shahzaib

Economics
Below are a few questions I had difficulty with so please check my answers and correct me if I am wrong, thanks :) 1. Kim, a public relations manager, has just completed the process of checking the references of several job candidates. What should she do next? Select one: A. ...
Sunday, November 20, 2016 by Raye

management mathematics 1
For three consecutive months, a person deposited some amount of money on the first day of ech montg in a small saving fund. These three successive amounts in the deposiy, the total value of which is ksh. 65,form a GP if the 2 extreme amounts be multiplied each by 3 abd the ...
Sunday, November 20, 2016 by loise

American Goverment
With the existing colonies or dependencies of any European power we have not interfered and shall not interfere....Our policy in regard to Europe...Remains the same, which is, not to interfere in the internal concern of any of its powers. 1. Which American foreign policy does ...
Saturday, November 19, 2016 by Annoymous

math
A) How many of the three digit numbers can be made from all of the digits, 1,3 and 7, and used only one each,are prime? B) What about 2,3 and 4? Once I get to know what the answer to the first one is, I'll figure out the second one myself.And then if I tell you what I got ...
Saturday, November 19, 2016 by Kajol

Physics
A 3.20 kg block starts at rest and slides a distance d down a frictionless 30.0° incline, where it runs into a spring (Fig. 8-6). The block slides an additional 23.0 cm before it is brought to rest momentarily by compressing the spring, whose spring constant k is 443 N/m. ...
Saturday, November 19, 2016 by Alex

SS and i need SOS. please help me
1.Who Were Among the first permanent White settlers in Oregon. A.Farmers B.Trappers C.Missionaries D.traders 2.What was the Rendezvous and why was it important to the maintain men a:it was the largest trading company in the west and the mountain men traded their pelts to the ...
Saturday, November 19, 2016 by hehell

Calc
Water flows from a storage tank at a rate of 500 ? 3t liters per minute. Find the amount of water that flows out of the tank during the first 13 minutes.
Saturday, November 19, 2016 by Ian

history
Please check my work: 1.Diplomatic immunity is based on what assumption a.diplomats will become active members of their new communities b.diplomats will obey the laws of their country of residence c.diplomats have no restrictions on behavior d.Diplomats will be isolated in the...
Friday, November 18, 2016 by ron

language arts pls check!
My answers are in parentheses The first two questions use this passage. You must have only positive thoughts in your heart that you're going to cripple this monster. Stick a piece of garlic in your pocket for good luck. A woman my mother knew in Palermo did this, and she ...
Friday, November 18, 2016 by fab

Geometry
One side of a prallelogram is 4.8 cm and the other side is 3/2 times the first side,find the perimeter of the parallelogram
Friday, November 18, 2016 by Geometry

physics
A steel spring is hung vertically. Using a ruler, the lower end of the spring was measured to be 25.0cm from its upper end. However, when an object of mass 0.500kg it attached to the lower end of the spring the spring stretches to a new length of 45.0cm. With the aid of a ...
Friday, November 18, 2016 by Jack

Calculus
i need help, im not sure how to get started : 1) A piece of wire 14 m long is cut into two pieces, the length of the first piece being x m. The first piece is bent into a circle, and the other is bent into a rectangle with length twice the width. Give an expression for the ...
Thursday, November 17, 2016 by Angela

Calculus: Centers of Mass
Find the centroid of the region in the first quadrant bounded by the x-axis, the parabola y^2 = 2x, and the line x + y = 4. I've graphed the function, and it looks like a triangle with one side curved (the parabola). I'm not quite sure how to go about the rest of the ...
Thursday, November 17, 2016 by Anonymous

US History
ALL of the following statements are correct about the slave trade EXCEPT: a. It began with the Portuguese exploration of West Africa from Senegal to Angola in the fifteenth century b. It increased when the Portuguese built several fortified outposts along the African coast c. ...
Thursday, November 17, 2016 by Anonymous

Philosophy
Section I: Answer the questions below about this brief passage: During the nineteenth century, many women died from what was then called “childbed fever”. A Viennese physician, Ignaz Semmelweis, concluded (diagnosed) that the cause of this disease was a “germ&#...
Thursday, November 17, 2016 by Jessica

Math
Tiny scored 94, 68 and 88 on her first 3 Algebra 1 tests. Her next test is her final which counts as double. Write and solve an equation that Tina could use to determine the minimum grade she must score on her final to have a mean score of 80.
Thursday, November 17, 2016 by Reanah

Science, Biology
Can you teach me how should I answer these questions please.. Why the events are significant? First mammals: First primates: First modern humans:
Thursday, November 17, 2016 by Emma

Social Studies
Asha lives in a nation that has a legislature and a prime minister. Citizens in her country vote in elections to elect their legislative representatives. Then parliament appoints the prime minister. 1: Does Asha's nation have a limited or an unlimited government? - Limited...
Thursday, November 17, 2016 by Castiel

math help pls
Jess played two days of golf . on the second day , he got a score of -6 . his total score for the two days was 0 . define a variable . then write and solve an equation to find the score jess got on the first day . is the answer 6?
Thursday, November 17, 2016 by math help

Maths
A ball is thrown vertically upwards at 3 m s-1 from 1m above ground level (I) write down the equation for the height of the ball above the ground after t seconds (while the ball is in the air). (II) use your answer to find the time it takes the ball to reach the ground. (iii) ...
Thursday, November 17, 2016 by Ed

Geometry
There showing a diagram and asking for the value of x and y. There is 4 'slots' for angles to be placed. The first angle is (19x-11) and its perfectly across from (10x+7) which probably means theyre congruent. Then theres (3y) which is across from a blank space which ...
Thursday, November 17, 2016 by Bebo

history
1.Based on this early illustration of the town, what is one reason why Francis Lowell's partners might have chosen this area to build the factory town of Lowell? A river ran through the location and could be used to power the factories. There were few trees to clear so ...
Thursday, November 17, 2016 by help!

English
Review the end of the first paragraph in the "Give Me Liberty" excerpt. What is the main point of the questions at the end of the paragraph? The fate of early settlers was uncertain. The new settlers had much to fear. The new settlers had less to fear than the ...
Thursday, November 17, 2016 by Anonymous

math
1 . the cost in dollars of a field is 64+14n , where n is in the number of people attending . what is the cost for the 48 people ? A. $736 B. $126** C. $896 D. $910 2. Suppose you are driving to your vacation destination . you are driving at an average rate of 60 miles per ...
Thursday, November 17, 2016 by math help

Math grade 6, four operations
There were 75 marbles in boxes a,b&c.after moving 28 marbles from box a to b,24 marbles from b to c &19 marbles from c to a,there was an equal number of marbles in each box.how many marbles were there in each box a at first?
Thursday, November 17, 2016 by Peachie

physics
A steel spring is hung vertically. Using a ruler, the lower end of the spring was measured to be 25.0cm from its upper end. However, when an object of mass 0.500kg it attached to the lower end of the spring the spring stretches to a new length of 45.0cm. With the aid of a ...
Thursday, November 17, 2016 by Jack

Maths
Mr. John is salesman employed to sell television sets on a salary and commission basis. His fixed monthly salary is 500,000. In addition he receives 5% commission on the first 1,000,000 and 12.5% on sales excess of 1,000,000. During the month of march 2013,his total income ...
Thursday, November 17, 2016 by Enelecy

Math
David starts off at a salary of $10,000 per yer. At the end of each year, he will earn a 4% raise on his previous salary. What will be the first year that he makes $15,000? If Valerie starts off at a salary of $10,000 per year and receives an option of a constant raise of $...
Wednesday, November 16, 2016 by Caitlyn

applied physics
An object is thrown vertically up ward from the ground with initial velocity 1960cm/s Neglecting air resistance, find the maximum height reached and the total time taken to return to the straight point ,/using first order differential equations/
Wednesday, November 16, 2016 by Ermiyas Abas

Math
Mrs. Jones and Mr. Graham had the same amount of money at first. After Mrs. Jones bought a computer that cost $2,055, she had 1/4 as much money as Mr. Graham. How much money did Mr. Graham have? I know that x = y in equation 1. I know that x-2055 = .25G for another. I'm ...
Wednesday, November 16, 2016 by Suh

Algebra
Find a polynomial function of lowest degree with rational coefficients that has the given numbers as some of its zeros. sqrt of 3 and 4i disregard the first post, thanks!
Wednesday, November 16, 2016 by Jason

Math/algebra
Sandy drives the first 3 hours of her trip at 65 miles per hour. The last hour of the trip she drives 62 miles per hour. How far did Sandy drive on her trip?
Wednesday, November 16, 2016 by Lauren

History
Can Someone Please Tell Me The Answers!!! course picture Modern US History A-1 SOH Course Links ? profile picture Joshua Whitmire Unit 2 Test Unit 2: Immigration and Migration > Unit Assessments 1. Why were many Native Americans opposed to settling in reservations? They ...
Wednesday, November 16, 2016 by Josh

english
Which of the following is an example of foreshadowing in To Kill A Mockingbird? Scout and Jem go see Mrs. Dubose. Miss Maudie's house burns down. Atticus discusses the Ewells with Scout after her first day of school. **my choice Scout does not like her first-grade teacher.
Wednesday, November 16, 2016 by TT

English
Which of the following is an example of foreshadowing in To Kill A Mockingbird? Scout and Jem go see Mrs. Dubose. Miss Maudie's house burns down. Atticus discusses the Ewells with Scout after her first day of school. **my choice Scout does not like her first-grade teacher.
Wednesday, November 16, 2016 by T

Social Studies
"I shall never surrender or retreat. . .I can on you in the name of Liberty, of patriotism, and everything dear to the American character, to come to our aid, with all [speed]. . ." ---- William B. Travis How did this message and the events at the Alamo affect Texans...
Wednesday, November 16, 2016 by Juliana

Social Studies
"I shall never surrender or retreat. . .I can on you in the name of Liberty, of patriotism, and everything dear to the American character, to come to our aid, with all [speed]. . ." ---- William B. Travis How did this message and the events at the Alamo affect Texans...
Wednesday, November 16, 2016 by Juliana

Physics
a great of effort, time, and money has been spent in the quest for the so-called perpetual-motion machine, which is defined as a hypothetical machine that operates or produces useful work indefinitely and/ or a machine that produces more work or energy than it consumes. ...
Wednesday, November 16, 2016 by John

supply chain management
As the owner of Wildstyle Music you would like to develop an inventory ordering policy which has at most a 10% probability of stocking out. Expected demand for professional mixing headphones is 2190 per year. The store is open 365 days per year. Every two weeks inventory is ...
Wednesday, November 16, 2016 by Fatmata Isha Bah

math
the second term of AP is 15 and the fifth term is 21.find (1) the common difference and the first term (2) The eight term (3) The sum of the first 16 term
Wednesday, November 16, 2016 by hussein jongo

Maths
The 2nd, 5th, and 14th term Of an AP are consecutive terms of a GP. Given that the sum of the three terms of the AP is 9, find the A, first term and the common difference of the AP. B common ratio of the GP C sum of the first three terms of the GP
Wednesday, November 16, 2016 by Kwame

Math
a salesman has a 42% chance of a sale at his first stop and a 42% chance at his second stop and a 14% chance at both stops what are the odds he will make a sale only at the first stop
Tuesday, November 15, 2016 by Lory

history
1. Which statement best explains the significance of the signing of the Mayflower Compact? * 5 points A)The colonists swore to survive together or die in North America. B)The colonists agreed to create their own government and to obey its rules. C)The colonists declared their ...
Tuesday, November 15, 2016 by connexus

Social Studies
1. What are the three types of productive resources? Select all that apply. (3 points) the raw materials provided by the planet the planning and work that go into production the markets that sell the results of production the social systems that ensure production is protected ...
Tuesday, November 15, 2016 by Anthony

HISTORY GOVERNMENT CCA
what characteritics do bureaucracies share? check all that apply Formal rules generalization clearly defined goals chain of command elected staff which of the following is part of the executive branch bureaucracy? the president's cabinet the congressional budget office the...
Tuesday, November 15, 2016 by A.A

Math grade 6, Fractions
Jenny and Phillip had $360 altogether.After Philip had given Jenny 2/5 of his money, Jenny had the same amount of money as Philip.How much money did Philip have at first?
Tuesday, November 15, 2016 by Peachie

Math grade 6, Fractions
Daniel gave 4/5 of his stickers to perry.Perry's collection of stickers increased to 64.If Perry had 28 stickers at first,how many stickers had Daniel at first?
Tuesday, November 15, 2016 by Peachie

civics
Research how your local government works. Briefly explain the process to pass a law (usually called an ordinance or code) in your city or county. To introduce the idea in my city or county, first I would ________________________________________​...
Tuesday, November 15, 2016 by kat

Social Studies
What country set up the first merchant company
Monday, November 14, 2016 by William

Math
A ten-foot-long board is cut into three pieces. The second piece is half as long as the first. The third piece is 4 feet longer than the second. How long is the first piece? Answer: 2 3/4 feet If f(x)=2x2+1/2x-4, what is f(-1/2)? Answer: -15/4 **I am studying for a test and am...
Monday, November 14, 2016 by Jess

Algebra
Separate 51 into 2 parts so the second part is 3 more than twice as large as the first part
Monday, November 14, 2016 by Melissa

Math
Jeremy loves right triangles that have side length 1. In fact, he loves to combine them so that the hypotenuse of one becomes the leg of the next. If the longer leg of the first triangle is sqrt 11, what will be the hypotenuse of the 2014th triangle? I don't understand ...
Monday, November 14, 2016 by D

American Government
1) What characteristics do bureaucracies share? Select all that apply. A) formal rules** B) generalized jobs** C) clearly defined goals D) chain of command** E) elected staff 2) Which of the following is part of the executive branch bureaucracy? A) the president's cabinet ...
Monday, November 14, 2016 by Juliet

SS
1. What are the three types of productive resources? Select all that apply. (3 points) the raw materials provided by the planet the planning and work that go into production the markets that sell the results of production the social systems that ensure production is protected ...
Monday, November 14, 2016 by Green Bow7

English
The High School Step Team Karla’s cousin Jade urged her to join the step team. “This afternoon you should definitely try out!” Jade suggested after the final bell rang. “I know she wants the best for me,” Karla thought to herself, “but I’m ...
Monday, November 14, 2016 by GummyBears16

Science
Is there a relationship between the dates for first land plants, fish, reptiles, mammals, primates, and humans and the amino acid differences?
Monday, November 14, 2016 by Emma

English
Write an analysis paragraph that answers the overarching question: What is the effect of imagery on the reader’s understanding of the relationship between Orwell and the native Burmese people? I look up examples and step by step and still dont understand. Pls help me This...
Sunday, November 13, 2016 by Emma

Aljebra
In two box 123 coins. Ten coins from a first box shifted to the second box. The second box now having twice as many coins in the first box. How many coin in the first box before the shift?
Sunday, November 13, 2016 by Dian

Math
Suppose the ice cream shop offers 9 different flavours, and we share 5 scoops. How many ways of ordering are there if All different any combination two scoops of one flavour, two scoops of 2nd, and one of third first one, i did 9! / 5!? second one and third one idk
Sunday, November 13, 2016 by Elle

Calculus
Find the equation of the line through the point (3, 5) that cuts off the least area from the first quadrant? y-A=B(x-C) i know its slope is -3/5 which is B. But what are the values of A and C?
Sunday, November 13, 2016 by Asfand

trigonometry
A ship sails 15.0 mi on a course S40°10’W and then 21.0 mi on a course N28°20’W. Find the distance and direction of the last position from the first.
Sunday, November 13, 2016 by michelle

Chemisry
If you put copper coated penny 1983or newer, in vinegar, it turns blackish green. If you rub the copper off half the penny first and expose the zinc, put the penny in vinegar, will the results change? Thank you.
Sunday, November 13, 2016 by lulu

Math
What is the first common number among: palindromic numbers, Triangular numbers and Fibonacci numbers?
Saturday, November 12, 2016 by Adam

Math
Kerri's father bill was a baker. Out of his usual morning batch of cookies bill burned the first 2 dozen cookies. He gave half of what was left to Keri to take to school. He wrapped up half of the remaining cookies and have them to a group of fireman. He gave two thirds of...
Saturday, November 12, 2016 by Jessica

statistics
there are 7 blue socks,5 red socks,3 green socks and 4 yellow socks in a drawer. 1.find the sample space 2.how many socks should I take out without looking to get a pair of socks 3.what is the probability that the first socks that I draw is red 4.what is the probability that ...
Saturday, November 12, 2016 by varghese

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