# i need the exat percentage of nitrogen in magnesium nitride

44,388 results, page 76

1. ### AED / ASAP PLEASE

i need help finding info. on Taoist... if they are pro or con on the following things... prayer in school, creationismv. evolution, studying woman's rights in the middle east, saying the pledge of allegiance, starting a gay or lesbian support group, and inter-racial dating...
2. ### dt

for my homework i need to find a picture of a product where the product designer has thought out of the proverbial box.ive looked on the site ms sue suggested for Aleisha and i am going to use that one i just need to find one more i cant think of anything. other than a chair ...
3. ### Algebra help

I need some help I posted the first question to this a bit ago but didn't enter it correctly so sorry to those who helped! I also have a 2nd half which I understood till they added the dividing part. I need to find the first five terms of each recursive sequence. 1.C1=64, C2=...
4. ### Englsih

Hey, can someone help me come up with examples for Aphorism speech plzzzz I came up with 3 I need 4 more!? "It is better to remain silent and be thought a fool than to speak out and remove all doubt" Here is the quote I am working on and it would be nice if someone can include...
5. ### Chemistry

I'm doing a lab in chemistry and I need help with a question, here is my data: Mass Before: 26.4 g After burned: 26.25 g Total Mass burned: .15 g 1. Calculate the mass of oxygen that was consumed while the candle burned. I think I need to use mole equations and that kind of ...
6. ### Early Childhood Ed. Question

If you are asked to do a frequency count on a child's placement of toys in his mouth,do you write down exactly when it happens or remember how often it happens? You will need the time, because you need to tabulate the time between. Frequency is in units of number per...hour, ...
7. ### Expository Essay Help

Here is my writing prompt: "Give a written description of the Titanic before it sank. What made the ship so magnificent? Describe, in detail (step by step), how the ship ultimately sank." I need help forming a thesis statement and an outline to follow. I also need links to ...
8. ### chemisty

If 15 grams of copper (11) chloride react with 20 grams of sodium nitrate, how much sodium chloride can be formed? Hint: you will need two stochiometry problems to determine which reactants limit the amount of NaCl produced? How do you figure out the 2 problems you will need? ...
9. ### chemistry

How do I find out how many ml of NaOH i need to titrate H3PO4. I used the ice table to knock off the two protons but im using a .2200M NaOH and do not Know how to determine the volume needed before hand. In other words i need some pre-calculations for volume of titrate needed ...
10. ### English, Critical Thinking

PLEASE HELP. I have this essay due tomorrow. I need help with the following: I have to critique the following article and write an essay. But first I need help identifyine Fallacies and the Types of evidence present. Then state whether or not his arguement is compelling. Its ...
11. ### Foreign languages

I just have one more doubts concerning the use of commas. 1)....... based on personal duty, hard work, respectability, and charity. Do I need to set the comma before and? 2) The telescreen transmits and receives all the time. (Do I need to include "data"?) 3) Shall I write ...

From past experience, an airline has found the luggage weight for individual air travelers on its trans- Atlantic route to have a mean of 80 pounds and a standard deviation of 20 pounds. The plane is consistently fully booked and holds 100 passengers. The pilot insists on ...
13. ### Chem

volume = 322 mL temperature = 150 celcius pressure = 175 kPa mass = 0.448 Calculate the molar mass of the gas. First I converted volume to 0.332 L. Second I converted 150 celcius into 423 kelvin. PV = nRt (175)(0.322) = n(8.314)(423) n= 0.016022988 molar mass = 0.448/0....
14. ### Psychology

he heritability of intelligence refers to: Question 10 options: the extent to which an individual's intelligence is attributable to genetic factors. the percentage of variation in intelligence within a group that is attributable to genetic factors. the extent to which a group'...
15. ### Algebra Vocab.

I need help with finding the term tesselation. I looked everywhere. i need help with tesselation and ratio If you will look up the right word you will find it. The word is spelled tessellation. Go to www.google.com, type in the word (even just close to the spelling) and it ...
16. ### SraJMcGin spanish

i just got home from rehersal and i have a spanisg collage due tomorrow i need to get ten oics about what i am doing in the next ten years and put sub headings under them in spanish. i will have these done by no later than 11 pm -- it is ten sentences but i need to find the ...
17. ### writing

So, over the summer i had to read the book called the giver by louis lowry, and now i need to write a two chunk paragraph on the differences and similarities between my life and Jonas' life in the community. I already did a paragraph on how they are different. All i need is to...
18. ### math

please im raking my brain to help my daughter! posting again! due in morning! we finished all but this one problem! need the rule input3 output9 input4 output16 input blank output25 input6 output blank input blank output0 input10 output100. please help im tired!! really need ...
19. ### Math

if there are 145 test questions, and the mean of the test scores for a class is 100 with a standard devation of 15, what percentage of the people taking the test would have the following scores: scored b/w 100 &115, scored b/w 100 & 115,scored b/w 0 & 100, scored b/w 0 & 145, ...
20. ### statistic

Chebyshev's thereon- the author's generac produces voltage amounts with a mean of 125.0 volts and a standard deviation of 0.3 volt. using chebyshev's theorem,what do we know about the percentage of voltage amounts that are within 3 standard deviations of the mean? What are the...
21. ### Chemistry

If I added sodium carbonate to magnesium nitrate, would it be insoluble & a precipitate forms? If I added sodium carbonate to calcium nitrate, would it be insoluble & precipitate forms? Adding sodium carbonate to strontium nitrate: insoluble, precipitate forms? adding sodium ...
22. ### Chem

Some very effective rocket fuels are composed of lightweight liquids. The fuel composed of dimethylhydrazine (CH3)2N2H2 mixed with dinitrogen tetroxide was used to power the Lunar Lander in its missions to the moon. The two components react according to the following equation...
23. ### math

The 2000 Paralympics (Parallel Olympics) were held in Sydney, Australia. Ticket sales for all events totaled over 1.11 × 106. Of the total ticket sales, 8.84 × 105 were sold as day passes, and 2.24 × 105 were sold as reserve seating for the opening and closing ceremonies. ...
24. ### Math

The students at Blue Ridge Middle School are going on a field trip to the museum. By Friday afternoon 4/5 of the students had turned in their permission slips. What percent of the students had not turned in their permission slips A.4% B.20% C.45% D.80% D? Bos spends 90% of the...
25. ### Algebra 2

According to a survey conducted in 1990 by Independent Sector, the percent of their incomes that Americans give to charities is related to their household incomes. For families with annual incomes between \$5000 and \$100,000, the percent is modeled by P = 0.0014x^2 − 0.1529 x...

One of the reactions involved in the smelting of copper sulfide ores involves copper (I) oxide and copper (I) sulfide: 2Cu2O2 + Cu2S ---> 6Cu + SO2 Assuming that 35.00 g of copper (I) oxide is heated with 25.00 g of copper (I) sulfide A) determine which reagent is present ...
27. ### Chemistry -Assignment Followup

Many important metals occur as sulfide, arsenide, and antimonide minerals, especially in the Sudbury mineral complex. The first step in processing these ores involves “roasting” the ore in air to produce the metal or metal oxide, along with nonmetal oxides that can be ...
28. ### English

Hey, I need a very last help with my english article problem... I need a very long sentence with lots of the, a/an. And there must be a lots of article mistakes in it. Can you help me?
29. ### Math

Bill wants to paint the ceiling and four walls of his bedroom. The room is 6.0 m long, 3.0 m wide and 2.4 m high. Paint comes in 4 L cans. One litre of paint covers 10 m2. What area does Bill need to paint? How many cans of paint does Bill need?
30. ### science( chem)

Calculate the molar solubility of Mg(OH)2 in water I know Mg(OH)2=> Mg2+ + 2OH- 2H2O=> H3O+ + OH- Ksp= [Mg2+][OH]2 Kw= [H30+][OH-] Mass balance [Mg2+]=2[OH] So.. [OH-]=2[Mg2+]+ [H3O+] Charge balance is where I get kind of confused I know that the positive charge is ...
31. ### math

Solution Dilution question: An order for 25mg of a oral solution is needed. You have 1000g and a 30ml bottle to make the solution. How many ml will you need for 25mg of the finshed oral solution. So once the solution is made, I will need to get 0.75ml out which = 25mg Is that ...
32. ### GEOGRAPHY

please could someone help, i need to find information about broughton chester airbus to write an essay about it.i need to write about what is made there how the parts are transported to different places how big the factory is what alterations have been made to the factory. ...
33. ### science

1) what is the mass of 10 cc of water? 2) why does a block of wood float on water? 3)how and why can density by used to identify an unknown substance? 4) describe the relationship between density, water, an d things that float please help me just need these answers to study ...
34. ### calculus

i am on "rolles and the mean value theorem" and was just wondering, when i am doing rolles, do i really need to find the exact value of x where f'(c) = 0? for example: f(x) = (x+4)^2 (x-3) on [-4,3] i get to: 3x^2+10x-8=7 then i don't know if i then need to find the exact ...
35. ### Math Helpppp

The College Board, which are administered each year to many thousands of high school students, are scored so as to yield a mean of 550 and a standard deviation of 100. these scores are close to being normally distributed. what percentage of the scores can be expected to ...
36. ### Math Helppp

The College Board, which are administered each year to many thousands of high school students, are scored so as to yield a mean of 550 and a standard deviation of 100. these scores are close to being normally distributed. what percentage of the scores can be expected to ...

80 U2 songs (in seconds) were selected at random. Assume that the data is normally distributed and that the bands entire collection of songs has a mean and standard deviation equal to those calculated(mean=289.7 or 290, standard deviation= 76.8 or 77). What percentage of U2 ...
38. ### Calculus

1. In a certain country, the percentage of the population relocating to a new town is given by the following function: p(t) = 20.6e^-0,009t,where 0 _< t _< 52. Time is zero (t = 0) corresponds to the year 1960. 1. Find the rate at which people relocated during the year ...
39. ### Calculus

1. In a certain country, the percentage of the population relocating to a new town is given by the following function: p(t) = 20.6e^-0,009t,where 0 _< t _< 52. Time is zero (t = 0) corresponds to the year 1960. 1. Find the rate at which people relocated during the year ...
40. ### Calculus

1. In a certain country, the percentage of the population relocating to a new town is given by the following function: p(t) = 20.6e^-0,009t,where 0 ¡Ü t ¡Ü 52. Time is zero (t = 0) corresponds to the year 1960. 1. Find the rate at which people relocated during the year of ...
41. ### Calculus

1. In a certain country, the percentage of the population relocating to a new town is given by the following function: p(t) = 20.6e^-0,009t,where 0 ¡Ü t ¡Ü 52. Time is zero (t = 0) corresponds to the year 1960. 1. Find the rate at which people relocated during the year of ...
42. ### English

I urgently need you to check these two sentences!! Thank you. 1) Do you need a detailed presentation of the school? 2) The other schools I worked for have always paid (rewarded/remunerated) both my involvement and transtlation activities (?) before and during a school exchange...
43. ### !!!!!SCIENCE HELP!!!!!

4. Explain the data you will want to collect on your mission, and list the instruments you’ll need so that you can collect and store samples while on your mission. Describe how any collected data will be used when you return from your mission. (3 points) My planet I chose to...
44. ### math, pre-statistics

A gumball machine is filled randomly with gumballs:red,green,purple,white,pink and yellow. The company claims the following percentages of each can be found in an unopened carton.30%red,20%green,20%purple ,20% white,5%pink and 5%yellow. What is the probability that the first ...
45. ### chemistry

0.5g of fuming h2s04 oleum is diluted with water. This solution is completely neutralized by 26.7ml of 0.4N naoh. Find the percentage of free s03 in the smaple solution. The answer 20.6% Assume that 50ml of 0.01M edta solution were added to 25ml of solution and the excess edta...
46. ### aiu

Analysis techniques include the following: • Comparative financial statements • Trend analysis • Ratio analysis • Percentage analysis Presentation of 5–10 PowerPoint slides that includes the following: • At least 3 slides relevant to the analysis prepared • An ...
47. ### Some Body Plz help math Nca

The table below shows the percentage of households that own a microwave in different countries. Construct a stem-and-leaf plot of the data. Country Percent Of Household With Microwave Ovens _____________________________________________________________ Argentina 97% ...
48. ### Educational technology and online learning

Which of the following sets is data would be represented best in a bar graph? A. the number of hot dogs consumed by the people entered in a hot dog eating contests B. The percentage of hot dogs consumed my women? C.the number of hot dogs consumed by the categories women, men, ...
49. ### Math

Good evening. I have a math problem that I just need a bit of help on please. A trap for insects is in the shape of a triangular prism. The area of the base is 3.5in and the height of the prism is 5 in. What is the volume of this trap? Do I just need to do 5 x 3.5in? Thank you
50. ### help

The interest rate on a second mortgage was5 7/8 % last month. This month the interest rate is 7 3/2 %. How many percentage points has the interest rate increased? Are you sure you mean 7 3/2% ? No lender would write an intereest rate that way. Perhaps you typed a numerator or ...
51. ### Math

Open ended Need HELP PLEASE!!! Mr.Guy isfinishing his patio. The Patio is 14ft. by 4yds. -If each square tile is 2 by 2, how many will he need? -If the tile is 5 dollars each, but he gets every 5th one free, how much will it cost? -If tiles are also sold in boxes of 15 that ...
52. ### Physics - please, I really need help

a car attempts to stop and slides 25.5m while accelerating at -4m/s^2. The car's initial velocity was 20m/s. Find the time the slide took. Note that the final velocity is not known and that you need a quadratic solution. I know the quadratic formula, but I'm not sure how to ...
53. ### PROJECT

The project i have to do is for art. Well basically i need to think of a yellow page advertisement design. As with all advertising, the ads must be clearly present all important information about the business. the as must have: the name company the type of service or product I...
54. ### statistics

We’re writing a test case that samples a “random” black box. Given n numbers, how many times would we need to sample the black box to have n unique responses with a 99.9% confidence? Eg, if we were rolling a six-sided die, how many times would we need to roll it in order...
55. ### examples on how to writ a cover letter requesting

I looked on the internet but nothing really applies to my situation. Im trying to write a cover letter to request some funding help from a federation They are willing to help I just need a good cover letter. need hep in how a cover letter should look and what to open my first ...

I need help in the setup teacher wants a guess and check table for the word problem. Just the set up I need help on . Please a wood board 156 cm long is cut into three pieces.the two longer pieces are the same length and are 15 cm longer than the shortest piece. How long are ...
57. ### Research paper Teen Drug Abuse

I need some suggestions on where to start writing a research paper about teen drug abuse I am not quit sure where to even begin I need an oposing argument as well any help would be greatly apprciated.
58. ### English

I need 3 themes and 4 quotes per theme for the book the bluest eye by toni morrison. i have one theme completely done. my other theme is sexual initiation and abuse, but i have no quotes for it. and i still need one more theme. help?
59. ### SS (Social Studies)

I'm working on a social studies project and I really need help on it. The question asks to list three benefits of farming. My benefits are: 1) A stable Lifestyle 2)Stable Food Source 3)A Source For Trading I just need help to create slogans for them!
60. ### math

The smith family is going on a five day journey. On tuesday the cover 7 over 24 of the total distance, on Wednesday 11 over 48 on Thursday 3 over 16 and on Friday 1 over 8. a). What percentage of the journey do they cover on Thursday? b). What fraction of the total distance do...
61. ### Literature

'Explain why it is important for you to be able to say what you think. Include details that show how people form their opinions. Support your ideas with examples from 'Darkness At Noon' by Harold Krents and 'Homeless' by Anna Quindlen.' I reallyyy need help with this ...
62. ### year 8 history

please could someone help me. For my history assignment i need to design a poster about the british slave trade and write a letter to the king about the british slave trade. I also need some info. thanks for help
63. ### human resources

I am preparing a line budget and a functional budget. I need to know how a functional budget example look. There are two different programs; one program uses 60% and the other 40%, I need an example of how the budget should actually look.
64. ### English(need help explain the meaning)

Do you think that there should be a cap to the monetary damages that are awarded in malpractice cases? What does this mean? what do you mean by cap to the monetary demages??? please help. I am foreign who need this sentence re explain to me in easier english. thank you
65. ### math

25 guests attended the first party. 33 guests attended the second party. What is the percentage increase in the number of guests from the first to second party?
66. ### SS Help, FAST!!!!!

What does this graph suggest about the costs and benefits of balancing the budget? (Graph: Only with spending cuts: 20% Mostly with spending cuts: 30% Equally with spending cuts and higher taxes: 32% Mostly with higher taxes: 7% Only with higher taxes: 3%) The Percentages ...
67. ### statistics

Sweden is reported to have among the highest percentage of citizens aged 80 years and over, at approximately 5.5 % (i.e. 5.5 % of it's population falls within this age category). Suppose 20 individuals are randomly selected from the population, and X is the number of ...
68. ### Statistic

Heights of men on a baseball team have a​ bell-shaped distribution with a mean of 169 cm169 cm and a standard deviation of 9 cm9 cm. Using the empirical​ rule, what is the approximate percentage of the men between the following​ values? a. ​% of the men are between 142...
69. ### chemistry

A 0.8552g sample of copper alloy is treated with 8 molar nitric acid and filtered and the precipitate is ignited giving a residue of 0.0632g of SnO2. The zinc is determined in one half of the filterate by precipitating it as ZnNH4PO4 and then igniting with 0.2231g of Zn2P2O7 ...
70. ### Statistics

Find the probability that the sum is as stated when a pair of dice is rolled. A.4 or 11 or doubles B. 8,given that the sum is greater than 4. C.Even,given that the sum is greater than 4. A. 4 can be obtained by 1&3, 3&1 or 2&2. 11 can only be obtained by 5&6 or 6&5. Doubles ...
71. ### math

Students in an English class need a mean of at least 90 points on four tests to earn an A. One student has scored 87,92,85. Write and solve an inequality to find what score the student needs on the next test to earn an A. 020714 I think that's it xDDD -pokes name- but you ...
72. ### physics

A jumbo jet taxiing down the runway receives word that it must return to the gate to pick up an important passenger who was late to his connecting flight. The jet is traveling at 45.0 m/s when the pilot resieves the messae. What is the acceleration of the plane if it takes the...
73. ### English

I need your opinion on this. I'm writing a research paper with fairly long paragraphs. My teacher said we only need to cite once a paragraph if it is all from the same source, but I feel like that's not enough. Should I cite every line? (My essay is going on turn it in dott ...
74. ### HR

I need to do a paper on Affirmative action, where I describe the elements of Affirmative Action as it applies to public and private sector employers, and how it interacts with Ttitle VII requirements of equal employment opportunity. However, I cannot find ANY information on ...
75. ### math

Let f(t) = Q0at = Q0(1 + r)t. f(7) = 75.94 and f(9) = 91.89 (a) Find the base, a. (Round your answer to two decimal place.) a = (b) Find the percentage growth rate, r. (Round your answer to the nearest percent.) r = % I honestly have no idea how to approach these problems. I ...
76. ### science

i need help with these questions because i need to write a report on it helpp please What are the implications of stem cell reasearch for today and future generations What are stem cells? What are they capable of? How are they used in science/ medicine presently? What ...
77. ### misc

i need some ideas of fun games and activities to do on a field day i've thought of doing different races, like three legged race etc. but i need more ideas, something other than board games or sports something new and creative please share some ideas thanks
78. ### chemistry

i don't understand any of this ! I'm doing the STP & stuff like that . The question is; How Many Molecules are contained in each of the following ? a] 1.00 mol O2 b] 2.50 mol He c] 0.0650 mol NH3 d] 11.5g NO2 pls just explain how to do . i don't need you to just give me an ...
79. ### Physics

Please help!!! Physics test!? I have a physics test tomorrow on projectile motion, and I don't feel ready for it. I'm having trouble in the class and I need to ace this test. The problem is I get confused when I get a problem. I don't know how to proceed. After I read the ...
80. ### Writing/Essay

I Need To Write a 1 1/2 page on a personal narrative about an incident in your life.Though it does not have to be entirely true, select a familiar topic that you are comfortable with. I need help on deciding what topic I want to write about, and also help on writing my essay. ...
81. ### Pictures (URGENT)

I need to draw pictures that represents the weather, for a poster assignment. But I'm having trouble with hot and sunny. what 2 different pictures can i draw to represent them? Also, cold, snowing, and windy. I need 3 different pictures to represent them as well? any ideas ...
82. ### trigonometry

y=−34 sin(10θ+10π)−14 I need to graph this trigonometry problem. I need the parent graph, period, vertical shift, phase shift, a separate graph showing the new mid line with the amplitude and a final product graph. thanks for any help :)
83. ### Social Studies

I have 4 major events for my portfolio i just need one more could you help me? I already have World War II, Communist Revolution, Climate change, and Cold War. I need one more major event that happened in China.
84. ### Statistics

In a certain microwave oven on the high power setting, the time it takes a randomly chosen kernel of popcorn to pop is normally distributed with a mean of 140 seconds and a standard deviation of 25 seconds. What percentage of the kernels will fail to pop if the popcorn is ...
85. ### calculus

I am reposting this because I still don't understand it. I need help with this problem. this is what I got so far: P(x)=12x-(x^2/500)-680-4x-0.01x^2 P'(x)=12-0.004x-4-0.02x P'(x)= -0.024x-8 x=8/0.024 My book says x=8/0.024 which somehow become 1000/3. They are the same when ...
86. ### statistics

Suppose that diastolic blood pressure readings of adult males have a bell-shaped distribution with a mean of 84 84 mmHg and a standard deviation of 9 9 mmHg. Using the empirical rule, what percentage of adult males have diastolic blood pressure readings that are greater than ...
87. ### chem

Aspirin (C9H8O4) is produced from salicylic acid (C7H6O3), and acetic anhydride (C4H6O3): C7H6O3 + C4H6O3 ¨ C9H8O4 + HC2H3O2 . (c) What is the theoretical yield of aspirin if 189 kg of salicylic acid is allowed to react with 128 kg of acetic anhydride? (d) If the situation ...
88. ### macroeconomics

Please note that we don't do students' homework for them. Once YOU have come up with a response to YOUR questions, please re-post and let us know what you think. Then someone here will be happy to critique your work. =) Use the circular flow diagram to show how much each of ...
89. ### Math

I am lost on this problem can someone help me with it? What is the major focal point of the story told by the information? Source of data: Ipsos-Public Affairs polls at least 966 people in each country September 17- October 2, 2005. Margin of error: positive or nrgative 3.1 to...
90. ### math

y=mx t b ax t by=c ax t by t c= 0 Need every question for all 3 above how do u do these im so confused i need help! thanks 8) Through (4,0) and slope of -1 0) through (4,5) with slope -8 10) through (-2,4) with slope 7 over 3 11)through (-2,-1) with slope of 0 13)through (3,2...
91. ### Physics

In the absence of a nearby metal object, the two inductances (LA and LB) in a heterodyne metal detector are the same, and the resonant frequencies of the two oscillator circuits have the same value of 510.0 kHz. When the search coil (inductor B) is brought near a buried metal ...
92. ### Physics

In the absence of a nearby metal object, the two inductances (LA and LB) in a heterodyne metal detector are the same, and the resonant frequencies of the two oscillator circuits have the same value of 580.0 kHz. When the search coil (inductor B) is brought near a buried metal ...
93. ### Earth Science

What is Floodplains? also i need information on what it is, how they start, where the mostly form. also the flood plains is on agriculture and how does it effect. i need to also know some pictures about flood plains also know the facts about it.
94. ### chemistry

You have a 1.0 M stock solution of H2SO4 in a large flask. You need to dilute this to make a 0.25M solution of H2SO4 for an experiment. If you need exactly 100.0mL of the diluted solution, how would you make the diluted solution?
95. ### CHEMISTRY..

1. Will a precipitate form if solutions of potassium sulfate and barium nitrate are combined? If so, write the net ionic equation for the reaction. 2. Will a precipitate form if solutions of potassium nitrate and magnesium sulfate are combined? If so, write the net ionic ...
96. ### Health/ Basic Clinical Procedures

please check mey answer thanks which of the following patient's need special attention by the medical assisnt while measuring height A 19 year old B 77 year old C 15 year old D 25 year old I think it is C because they are young,however the 77 year old may also need some help
97. ### HCA 240

Write a 150- to 200-word script for a radio ad that promotes a healthy musculoskeletal system in old age. Address the risk factors for: arthritis, osteoporosis, injuries from falls. Incorporate prevention strategies such as: proper nutrition (calcium, diet) Don't need any ...
98. ### Math/Physics

I am given a damping constant of 20 dyne*sec/meter...do I need to convert this if the rest of my givens are, for mass = 2kg, k (spring constant) = 82 N/m. I am trying to find the equation of motion of a spring but cannot solve it until I know how to convert/if I need to ...
99. ### Equation from Three Points*HELP*

Write the standard equation for the circle that passes through the points: (0, 0) (6, 0) (0, - 8) You must include the appropriate sign (+ or -) in your answer. Do not use spaces in your answer. x 2 + y 2 x y = 0 HELP PLEASE I NEED STEP BY STEP EXPLANATION!! I KNOW THAT THE ...