Thursday
August 25, 2016

Posts by ROSE

Total # Posts: 1,245

Algebra Quadratic Functions
HOW DO YOU DO PART TWO? The performer stands on a tightrope 3m above ground and theows a diabolo upwards. In each throw , the height (ym) of the diabolo above the ground after s seconds is given by y=-s^2+3s+4 1) Find maximum height that the diabolo can reach My answer: 25/4 ...
August 8, 2016

math quadratic functions
Alice cuts a ribbon of length 40cm into two pieces to form two squares as shown in th figure (there was no figure, but from my assumption the two squares are probably different ). Let xcm be the length of a side of one of the two squares a)express the total area of the two ...
August 8, 2016

Algebra Quadratic EFuncyoon
David has 200m of fencing to enclose three identicle rectangular pens as shown in the figure. Let x be the length of each pen. a) express the total area of the pens in terms of x My answer: 2x^2-100x (It is correct according to the answer key) b) find the maximum total area of...
August 8, 2016

maths
Solve this anagram of a famous mathematician: ghetgNlai
August 4, 2016

chemistry
Hydrogen chloride reacts with water to produce an ion with the chemical formula H3O+. An H3O+ ion has one dative covalent bond. Explain how the bond is formed.
July 18, 2016

discrete math
1.Let functions f and g be defined by f(x)=2x+1, and g(x)=x^2-2, respectively. Find a)(gof)(a+2) b)(fog)(a+2) 2.Let A={x:x≠2) and define f: A→R by f(x)=4x/(2x-1) . Is f is one- to- one? Find the range of f . Then find f^(-1) and hence determine the domain and ...
July 9, 2016

discrete math
Let R be a relation "is located in" from set x of y of countries. state each the following in words and state whether the statement is true or false. a)(Bangi,Selangor) b)(Kota Bharu,Johor) c)(Miri,Sabah) d)(Pekan, Pahang)
July 8, 2016

math
Let R be a relation on A={2,3,4,6,9} defined by "x is relatively prime to y", that is the only positive divisor or x and y is 1. a)write R as an ordered pair b)Draw a diagraph representing R c)Find the in-degree and the out-degree of each vertex d)List all paths of ...
July 8, 2016

math
how many committee of five people can be chosen from 20 men and 12 women if a) exactly three men must be on each committee b) at least four women on each committee
July 6, 2016

math
yes, there are two different questions a) exactly three men must be on each committee b) at least four women on each committee thank you
July 5, 2016

math
how many committee of five people can be chosen from 20 menand 12 women if exactly three men must be on each committee and at least four women on each committee
July 5, 2016

math
an outfit consists of skirt and a blouse. if there are 6 skirts and 8 blouses from which to choose, then how many different outfits are possible? we assume that any possible combination can be worn together.
July 3, 2016

Msth
I have a spinner that is divided into 3 equal parts,1/3 is N, 1/3 is E,and 1/3 is U. Use a tree diagram to find the probability that the spinner lands on N both times if the dpinner is spun twice?
May 31, 2016

A question
What are some ideas being propagated by society that most adhere to even though they know its wrong
May 29, 2016

Religion
Thank you
May 28, 2016

Religion
The question im asked is "What is it that im a slave to? What is holding you back, what you need liberation from. I wanna discuss on how i am a slave to my emotions. is it possible that your emotions can hold you back?
May 28, 2016

Chemistry
Complete the following equations: A) methyl butanone + oxygen ---> B) a pentagon + F2 ----->
May 26, 2016

Chemistry
What would the reaction of these two look like (reactants and products) A) hexanal is reduced B) Butanoic acid is neutralized by potassium hydroxide
May 26, 2016

Chemistry
Complete the following equations: 1. Benzene + hydrogen fluoride ----> 2. Propanoic acid + ethanol ----> 3. 3-pentanol --->(oxidized)
May 23, 2016

Chemistry
Complete the following equations. Include names of all reactants and products A) CH3CH2CHCH - CH2+H2O --> | CH3 B) CH3CHC=CCH3 + H2 ---> | CH3
May 23, 2016

physics
A wire 20cm long carry current of 2A is placed perpendicular to a uniform magnetic field. If a force of 0.8N acts on it. Calculate the value of the magnetic field intensity B
May 18, 2016

Math
I don't think your question has anything to do with math... Post a relevant question to the topic you need help with.
May 16, 2016

Math
Is this an example of two-variable data? Data Management Marks: 74,81,66,53,92,45,80 Grade 12 Average: 77,87,68,67,85,55,76 i think it is..
May 16, 2016

Science
If you are in a spacecraft that has been launched into space, your weight would A) Increase because gravitational force is increasing. B) Increase because gravitational force is decreasing. C) Decrease because gravitational force is decreasing. D) Decrease because ...
May 12, 2016

English
I think the answer is either to be entertained or to gain understanding but i think the answer that makes the most since would be to gain understanding.
May 12, 2016

life orientation
Evaluate the physical, social and economic consequences of this crime to the offender. How did this corruption and fraud impact negatively in the country example service delivery,tax,expenses of trial?
May 8, 2016

Chemistry
What are the molecular formula for: 3-methylpentanoic acid Cis-2-propyl-2-hexane N-methylpropanamine N-methylhexan-3-amine
May 8, 2016

Math
How can i find misleading graphs on the news online??
April 27, 2016

math
write an expression that represents how much you would make per hour on holidays if you earned time and a half (40 hours for 50 weeks)
April 25, 2016

Chemistry please help
A general reaction written as 1A + 2B --> C + 2D is studied and yields the following data: Expt (A). (B) initial (C)/t 1. 0.150. 0.150. 8.00 x10^-3 2. 0.150. 0.300. 1.60 x10^-2 3. 0.300. 0.150. 8.00 x10^-3 What is the order of the reaction with respect to B? What is the ...
April 25, 2016

Chemistry
The average rate of disappearance of ozone in the reaction 2O3(g) ---> 3O2 (g) is found to be 8.12 x 10^-3 molecules over 15 seconds. What is the rate of appearance of O2 during this interval
April 24, 2016

Math please help
I don't understand?
April 24, 2016

Math please help
My values: 0.012 0.008 0.005 0.0035 0.0025 0.002 0.0018 0.0017 For a graph.. What scale on the x axis should I go by to plot these values... The time is the y axis which I know the scale... But I can't think of a scale to go by for these values
April 24, 2016

Chemistry
Given info: Time(s). (ClO) mol/L 0.0. 0.012 4.0. 0.008 8.0. 0.005 12.0. 0.0035 16.0. 0.0025 20.0. 0.002 24.0. 0.0018 28.0. 0.0017 Calculate the average rate of the overall reaction
April 24, 2016

STATS
A survey found that 36% of students still enjoy doing research in a library. A random sample of 326 students showed that 105 of them will continue to go to library. If the critical value is -1.65 what is your decision.
April 24, 2016

Chemistry
How do I answer this question? The average rate of disappearance of ozone in the reaction 2O3 --> 3O2 is found to be 8.12 x 10^-3 molecules over 15 seconds. What is the rate of appearance of O2 during this interval?
April 22, 2016

Chemistry
Two electron configuration: Mg(Ne)3s^2 Zn(Ar)4s^2 3d^10 Using the configurations, explain the difference in relative reactivity of the 2 metals ( which are Mg and Zn)
April 19, 2016

Chemistry
Two electron configuration: Mg(Ne)3s^2 Zn(Ar)4s^2 3d^10 Using the configurations, explain the difference in relative reactivity of the 2 metals ( which are Mg and Zn)
April 19, 2016

Chemistry
Two electron configuration: Mg(Ne)3s^2 Zn(Ar)4s^2 3d^10 Using the configurations, explain the difference in relative reactivity of the 2 metals ( which are Mg and Zn)
April 19, 2016

Chemistry
Use the collision theory to explain the increase in rates of the other reactions
April 19, 2016

Chemistry
Write balanced reaction for the following metal acid reaction A) Mg and HCI B) Zn and HCI
April 18, 2016

English
Writing a haiku about a cellphone
April 15, 2016

math
My values are: 0.075 0.025 0.1 0.075 0.1 0.125 0.05 0.125 0.025 0.15 0.125 0.025 What would be an appropriate scale to go by on a bar graph.@bobpursely suggested 40:1 what does this mean???
April 13, 2016

Math
My values are: 0.075 0.025 0.1 0.075 0.1 0.125 0.05 0.125 0.025 0.15 0.125 0.025 What would be an appropriate scale to go by on a bar graph.
April 13, 2016

Chemistry
How do I calculate the heat released by 1 mole MgO Given: 0.5 g of MgO Heat gained by acid is 1337.6 kJ I calculated the moles for MgO which I got 0.0125 I'm not sure if I'm on the right track..
April 12, 2016

Chem
How do I calculate the heat released by 1 mole MgO Given: 0.5 g of MgO Heat gained by acid is 1337.6 kJ I calculated the moles for MgO which I got 0.0125 I'm not sure if I'm on the right track...
April 12, 2016

Chemistry please help!
The reaction through which carbon changes from graphite to diamond form is represented by the equation C(graphite) ---> C(diamond) delta H: ? Using the reactions below, determine the amount of heat absorbed in the change of one mole of graphite to one mole of diamond C(...
April 7, 2016

Chemistry please help
The reaction through which carbon changes from graphite to diamond form is represented by the equation C(graphite) ---> C(diamond) delta H: ? Using the reactions below, determine the amount of heat absorbed in the change of one mole of graphite to one mole of diamond C(...
April 7, 2016

Chem
The reaction through which carbon changes from graphite to diamond form is represented by the equation C(graphite) ---> C(diamond) delta H: ? Using the reactions below, determine the amount of heat absorbed in the change of one mole of graphite to one mole of diamond C(...
April 6, 2016

Chemistry
Calculate the enthalpy of formation of maganese (IV) oxide based on the following information. 4Al(s) + 3MnO2(s) --> 3Mn(s) + 2Al2O3(s) Delta H = -1790 kJ 2Al(s) + 3/2O2 (g) ---> Al2O3 (s) Delta Hf = -1676 kJ
April 6, 2016

Chemistry
So i would change the sign of the second equation and add them?
April 5, 2016

Chemistry
The reaction through which carbon changes from graphite to diamond form is represented by the equation C(graphite) ---> C(diamond) delta H: ? Using the reactions below, determine the amount of heat absorbed in the change of one mole of graphite to one mole of diamond C(...
April 5, 2016

Chem
How did u get 4.186 kj?
April 5, 2016

Chem
Compound B is burned in a bomb calorimeter that contains 1.50 liters of water. When I burned 50.0 grams of compound B in the calorimeter, the temperature rise of the water in the calorimeter was 35.0 degrees C. If the heat of combustion of compound B is 2,150 kJ/mol, what is ...
April 5, 2016

Chemistry
Consider the following three reactions: Ca(s) + 2H2O(l) ---> Ca2+(aq) + 2OH^- (aq) + H2(g) CaO(s) + H2O(l) ---> Ca2+ (aq) + 2OH^- (aq) H2(g) + 1/2O2 (g) ----> H2O (l) Delta H = 430.75 kJ Delta H = 81.55 kJ Delta H = 285.63 kJ Determine Delta H for the overall reaction...
April 5, 2016

Chemistry
How much energy will be liberated upon the combustion of 12.5 grams of ethene? C2H4(g) + 3O2(g) ----> 2CO2(g) + 2H2O(g) Delta H = -1387.4 kj
April 4, 2016

Need ideas
It is for Religion class... Grade 12.. we are just supposed to explain the topic and connect it to the Catholic Church...
April 3, 2016

Need ideas
I am doing a presentation on Consumerism... I need ideas on activities that have to do with Consumerism I can do with the class... To engage them
April 3, 2016

Religion
How does St.Therse of Lisieux exemplify the qualities from the parable the Good Samaritan
April 1, 2016

life orientation
No guys plz help with answer not wat u r doing and let's help each other plz plz plz
March 31, 2016

Math
I need help coming up with a unique game that can be played at a carnival, amusement park or casino.... and u need to be able to explain the probabality of your game. Any ideas
March 30, 2016

maths
A.If 0 is less than or equal to thita is less than 360 ,find all possible value of thita such that : 1.Sin thita =0.5623
March 29, 2016

English
I have to write a point form outline for a short story... i need to start with a flashblack but not sure how? the topic: Your main character is an easy going 74-year old woman. The story begins in a doctors surgery. Your character is determined to get to the truth.
March 26, 2016

Math
The game of euchre uses the 10s, jacks,queen,kings and aces from a standard deck of 52 cards. How many 5-card euchre hands have at least 2 red cards? Explain your reasoning. What is this question asking me to find, this is what I don't understand
March 21, 2016

Math
You are setting up a system of programming codes for a universal TV remote. Each code will have five digits and cannot include a 0 or repeat any digits. How many codes: A) do not contain a 1? My answer: 8x7x6x5x4 = 6720 codes B)have 2 as the 2nd digit and 4 as the fourth digit...
March 21, 2016

Math
Expand (3-x)^7 Would i start like (3)^7(-x)0 etc....
March 20, 2016

Math
For a calculus quiz, the teacher will choose 11 questions from the 15 in a set of review exercises. How many different sets of questions could the teacher choose
March 20, 2016

Math
How many different sums of money can U make with 4 pennies, two nickels and six quarters
March 20, 2016

Math
Find the middle term in the expansion of (2x+3y)^12
March 19, 2016

Prob
A game is played using three 6-sided dice. You throw these dice one time and if the dice all show the same number ( triples), you win $ 40.00 . For this game to be “fair”, how much should a person pay to play this game ?
March 19, 2016

Math
In the expansion of (ax +by)^8, the first three terms are 256x^8, 6144x^7y and 64512x^6y^2. Find the values of a and b
March 18, 2016

Math
A new theme park will have five roller coasters, six water rides and eight suspension rides. How many different combinations of rides could you try at this park.
March 18, 2016

Data management check
A fabric store has 44 bolts of fabric on its clearance table. Of these bolts 28 are broadcloth, 17 floral prints, 22 have a blue background, 12 floral prints on broadcloth, 10 arare broadcloth with a blue background, and 5 are floral prints with blue background. If all but 2 ...
March 18, 2016

Data Management check
A fabric store has 44 bolts of fabric on its clearance table. Of these bolts 28 are broadcloth, 17 floral prints, 22 have a blue background, 12 floral prints on broadcloth, 10 arare broadcloth with a blue background, and 5 are floral prints with blue background. If all but 2 ...
March 16, 2016

Data Management
You are thinking of using some leftover ceramic tiles to make a decorative border for a patio. You have ten blue, four gold, and six white tiles. In how many ways can you make the border if it requires 15 tiles and you use only blue and white ones? Explain your reasoning. i ...
March 16, 2016

Data Management (need help)
Suppose that the SJCS and Mary Ward are in the basketball final. In this best-of-three series, the winner is the first team to win two games. There are 60% chances SJCS TEAM will win first game. If SJCS wins, there are a 70% chance of winning next game and if they lose there ...
March 9, 2016

Math
From the top of an 8m house the angle of elevation to the top of the schools flagpole across the street is 9 degrees The angle of depression is 42degrees to the bottom of the pole How tall is the flagpole
March 8, 2016

Chemistry
If you make a solution in the laboratory that contains 0.1 M acetic acid (CH3COOH), what concentration of hydronium will you have once the solution equilibrates?
February 29, 2016

Chemistry
If you make a solution in the laboratory that contains 0.1 M hydrochloric acid, what concentration of hydronium will you have?
February 29, 2016

Chemistry
What is the strongest intermolecular force present in each molecule: H2S CF4 NH3 CS2 PCL3 N CH2O C2H6 CH3OH BH3 My work: Hydrogen bonding London dispersion Dipole dipole London dispersion Dipole dipole London dispersion Hydrogen bonding Hydrogen bonding Hydrogen bonding Am I ...
February 28, 2016

English
Identify the sentence with the correct end punctuation. 1.did you see the elephants 2.I saw a baby kangaroo 3.who found the way to the penguins 4.I miss the monkeys
February 28, 2016

history
What were arguments for maintaining the slave trade and slavery in general during the Constitutional Debates on Slavery? How did the delegates from Georgia and South Carolina in particular impact the debate?
February 27, 2016

Math
At a school of 1400 students, 800 are currently enrolled in English, 740 are enrolled in mathematics and 325 are enrolled in both subjects. How many students are enrolled neither English nor Mathematics? I got 650 is this right?
February 23, 2016

Math
A game show has three doors labelled A,B, and C behind which there may or may not be a prize. A group of contestants are asked behind which doors they think there is a prize. The results are that 18 people choose A, 19 people choose B, 19 people choose C, 4 people choose A and...
February 23, 2016

Social Studies
@Ms. Sue
February 9, 2016

Social Studies
Answer the following about the great wall of china: a.When, where, and why did it develop? b.How was it used or practiced? c. Whom did it affect? d.What was the lasting impact this innovation had on China and its people? e.What are some modern examples of the concept or product?
February 9, 2016

math
How would i solve for n nP5 = 14(nP4)
February 7, 2016

math
Solve the equation for n n!/(n-2)! = 90 I get n= 10 but when i plug 10 back into the equation i dont get 90 to check... My work: n!/(n-2)! =90 n(n-1)(n-2)/(n-2)! =90 i cancelled the n-2 and expanded the n(n-1) n^2 -1n -90 =0 (n-10)(n+9) = 0
February 7, 2016

Math
An explicit solution of a differential equation is: a) a simpler equation b) a real number c) a function on some domain d) an approximation e) a linear relation
February 2, 2016

Data Management
Simplify x^2 - xy + 2x/2x
February 1, 2016

Physics
a spring extends by 10 cm when a mass of 100g is attached to it. what is the spring constant?
January 27, 2016

math
The ratio of four less than a number to twenty six more than the number is 1:3 . what is the number?
January 24, 2016

Operations
Its McDonald's
January 23, 2016

Operations
We are talking for example McDonald's how does their work force reflect their global strategy?
January 23, 2016

Operations
Could someone what do they mean by this question please.How does their work force reflect their global strategy?
January 23, 2016

Math connexues
what are your awnsers? i cant check them with out seeing what you choose
January 22, 2016

algebra
the sum of two numbers is 6 more than three times the smaller and and their sum is 66. what are the numbers?
January 22, 2016

Science
Actually, -_- , number 8, is b. thank a lot thats what i got first but i thought u were right. Check your answers!!
January 21, 2016

global studies
this is a 20 question project and i could really use a lot of help :)
January 21, 2016

global studies
some polynewian islands are ring- shaped coral islands that surround a body of wate, or? a.)copra b.) coral c.)atolls d.)plates
January 21, 2016

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