Thursday

April 17, 2014

April 17, 2014

Total # Posts: 1,798

**Advanced Math.**

Write an equation in slope-intercept form of the line whose parametric equations are x= (1/2)t + (2/3) and y= t – (3/4). t = y + 3/4 x = 1/2(y + 3/4) + 2/3 2x = y + 3/4 + 4/3 2x = y + 25/12 y = 2x - 25/12 A force F1 of 35 newtons pulls at an angle of 15 degrees north of d...

**Adv. Math.**

Write a vector equation of the line that passes through point P and is parallel to a. Then write parametric equations of the line. P(-1, 3); a=(-6, -1) MY ANSWER: (x+1, y-3) = t(-6, -1); x= -1-6t, y=3-t P(0, 5); a=(2, -9) MY ANSWER: (x, y-5) = t(2, -9); x=2t, y=5-9t

**9th grade**

it has a large P----e ni----s

**Chemistry**

How many moles of K3PO4 are required to react completely with 4.5 moles of CaCl2 2K3PO4 + 3CACl -> Ca3(PO4)2 + 6KCL

**Pre Calculus**

Simplify 2(3-i^14)- (5-i^23) 3-i Simplify: (5-3i)^2 16+30i Simplify (3+2i) / (4-5i) (2/41)-(23/41)i is this right?

**spanish**

D is correct

**spanish**

A is correct

**spanish**

C is correct

**spanish**

B is correct

**spanish**

D is correct

**spanish**

D is correct

**spanish**

D is correct. The sentence would then translate to: Many people have an allergic reaction to insect bites.

**spanish**

A is the correct answer. This is the translation: "Did you hurt the arm?" "Well, I hurt the elbow."

**spanish**

yes B is the answer. Here's the translation: "You were very sick last night, true?" "Yes, when my parents came home I was vomiting."

**spanish**

Here's the translation for the question: "What were they doing when they saw the accident? "___________ the street." The question is asking in the 'pretérito (past)' form. So you must also answer in the 'pretérito' Which of the ...

**spanish**

A is the correct answer. English translation: Can *antibiotics really help a person who has a very bad infection?

**spanish**

B is correct.

**spanish**

Translation of question: "Raul, what happened?" Why are you using crutches?" "Because___________ and I broke my ankle." a. I fell b. I protect c. I cut d. I burned A is the correct answer.

**spanish**

D is correct. Translation: "Why did you sneeze?" "Because I am alergic to pollen."

**social studies**

what spiritual purpose,do you think they serve for indigenous peoples

**spanish**

how can i say this using the verb haber? 13. ¿Cómo se dice "there is a plant (una planta)" en español?

**world history**

Why were foragers better off than farmers?

**CAn someone PLEase HELPPP !!!!!!**

Thanj

**Spanish!**

Write the correct form of the verb tener for the following dialogue in the corresponding numbers below: Ana: Hola Isabel: ¿Tú _____ galletas cookies? Isabel: Yo _____ hamburguesas hamburgers. Ana: Yo no _____ ganas de comer hamburguesas. ¿Sabes si do you k...

**Math**

how do you add the following fractions. (X^2-6x)/(x^2+7x)+(x^2+5x)/(x^2+7x)? what do you get when you simiplify it because i have no idea how to :(

**spanish**

According to me, your answers are correct. But I may be wrong. So wait for the final verdict from SraJMcGin.

**Quick Question**

What is Quantum Physics and Quantum Mechanics? Is there even a difference between them? thank you very much.

**Quick Question**

I need a simple definition that summarizes what The Peiodic Table of Elements is? And what it does. Thank you.

**Quick Question #2**

How did Max Planck came upon/discover Quantum Physics? thank you

**Quick Question**

Who is the founder of Quantum Physics? Please help. Urgent.

**Spanish 1**

How do you say these in spanish??? Please and thank you. 3. 7:40 4. 3:55 6. 12:45

**Spanish 1**

Can someone please help me with the correct form of the adjetives? Thank you millions. 12. La profesora tiene pelo _____ largo. 13. Los gatos tienen las piernas ______ (corto. 14. La lengua española the Spanish language es ___________: divertido 15. Mis amigos my friend...

**Astronomy - Plantet (MARS)**

For an assignment I have to research Mars. Including size, temperature and gravity. My teacher wants a summary of these. Can someone please help me shorten this wall of text into like 1 paragraph? It was 1 full page before, but I took out all the technical terms and stuff. but...

**4th grade geography**

Type those search terms into GOOGLE and I'm pretty sure you will be able to find the info you are looking for.

**math**

2 1/2 + 3 1/4 + 3 5/8 translated into decimals: 2.5 + 3.25 + 3.625 = 9.375 (fraction: 9 3/8)

**Math**

hi,about how long or tall is a recliner? 80ct tall,8ct.tall,80meters tall or 8meters tall?

**Physics**

When a skydiver jumps from a plane and achieves terminal speed. Which quantity remains constant? (a) Momentum (b) kinetic energy (c) potential energy (d) both a and b (e) both a and c I say kinetic energy, am i right?

**Calculus**

A patient is given a drug intravenously at a rate of 43.2 mg/hour. The drug enters a compartment volume or the volume of the part of the body of 35,000 ml. The rate at which the drug leaves the body (mg/hour) is proportional to the quantity present, with proportionality consta...

**Physics**

A 69kg skateboarder, at rest on a frictionless surface, throws a 4.0kg rock with the velocity given by x=3m/s y=4m/s, where the x and y axes are both in the horizontal plane. What is the x component of the subsequent velocity of the skateboarder? WHat is the y component of th ...

**Chemistry**

What is the Lewis dot structure for LiF? Is it Li - F with 2 dots on each side of F?

**Chemistry**

What is the Lewis dot structure for LiH? Is it simply Li - H?

**Physics**

A sled that has a mass of 8.8kg moves horizontally at 20 km/h. When it passes under a bridge 13kg of snow drops ontothe sled. What is its subsequent speed? Isn't this in inellastic collision equation. I used (m1v1)+(m2v2)=(m1+m2)(vf) m1=8.8kg v1=20km/h m2=21.8kg v2=0km/h I...

**Physics**

A 69kg skateboarder, at rest on a frictionless surface, throws a 4.0kg rock with the velocity given by v=3(i hat)+4(jhat), where the x and y axes are both in the horizontal plane. What is the x component of the subsequent velocity of the skateboarder? WHat is the y component o...

**4th grade-English**

It will only be a day's drive to reach the mountains. Would mountains have 's or would it just be mountains?

**Physics**

Do i do this by k=1/2mv^2 If so what wll be my m and v then

**Physics**

Find the energy necessary to put 5kg , initially at rest on Earth's surface, into geosynchronous orbit. Do I use the formula U=GMm/r G=6.67*10^-11 M=2.5*10^24 m=5 r=41000 Is this sort of right, any help would be greatly appreciated.

**Physics**

The escape speed from a planet of mass 2.5×10^24 is 7.0 km/s.What is the planet's radius? Iam using the formula v=sqr(2GM/r) v=7 G=6.67*10^-11 M=2.5*10^24 r=? I get 6.8*10^12 Where did I go wrong?

**Physics**

The escape speed from a planet of mass 2.5×10^24 is 7.0 km/s.What is the planet's radius? Iam using the formula v=sqr(2GM/r) v=7 G=6.67*10^-11 M=2.5*10^24 r=? I get 6.8*10^12 Where did I go wrong?

**Physics**

Find the energy necessary to put 5kg , initially at rest on Earth's surface, into geosynchronous orbit. Do I use the formula U=GMm/r G=6.67*10^-11 M=2.5*10^24 m=5 r=41000 Is this sort of right, any help would be greatly appreciated.

**Physical Geology**

What is one thing that humans get from each of the spheres? The spheres are the biosphere, atmosphere, hydrosphere, and lithosphere.

**cultural diversity**

what are the most significant similarities between the chinese american and japanese american (cultural) experiences? what are the differences? topic relative lifestyle success in the United states

**Physics**

In a railroad yard, a 2.0×104 kg boxcar moving at 10m/s is brought to a stop by a spring-loaded bumper mounted at the end of the level track. If the spring constant 1.7 MN/m , how far does it compress in stopping the boxcar? What do i do?

**Physics**

A 17mlong vine hangs vertically from a tree on one side of a 10 m wide gorge, as shown in the figure. Tarzan runs up, hoping to grab the vine, swing over the gorge, and drop vertically off the vine to land on the other side. At what minimum speed must he be running. I do 17^2+...

**Physics**

The escape speed from a planet of mass 2.5×1024 kg is 7.0 km/s .What is the planet's radius? I amusing v=sqr(2GM/r) For G I am using 6.67*10^-11 and for M do I use 5.97*10^24

**Physics**

What do you mean by the kinetic energy it hasn't given me anything

**Physics**

Find the energy necessary to put 5kg , initially at rest on Earth's surface, into geosynchronous orbit. do i use the formula U=-GMm/r I get 290 MJ?

**Physics**

Two meteoroids 250,000 km from Earth are moving at 2.1 km/s. Meteor one is headed in a straight path for Earth, while meteor two is on a path that will come within 8500 km from the Earth's center. (A) What is the speed of the first meteroid when it strikes Earth. (B) What ...

**Physics**

The hockey captain, a physics major, decides to measure the speed of the hockey puck, He loads a small styrofoam chest with sand, giving it a total mass of 6.4 kg. He places the chest and embeds itslef in the styrofoam. The chest moves off at 1.2 m/s. What was the puck's s...

**English III**

What is the theme of follow the poem Follow the Drinking Gourd? Give examples.

**physics**

Two meteoroids 250,000 km from Earth are moving at 2.1 km/s. Meteor one is headed in a straight path for Earth, while meteor two is on a path that will come within 8500 km from the Earth's center. (A) What is the speed of the first meteroid when it strikes Earth. (B) What ...

**stats**

Data on number of days of work missed and annual salary increase for a company's employees show that in general exployees who missed more days of work during the year received smaller raises than those who missed fewer days. A detailed analysis showed that number of days m...

**stats**

Data on number of days of work missed and annual salary increase for a company's employees show that in general exployees who missed more days of work during the year received smaller raises than those who missed fewer days. A detailed analysis showed that number of days m...

**Financial Management**

You have to consider that rarely in life is there a free lunch. If the stock did not drop on an ex-dividend date, all else held constant, you could purchase the stock for the ex-dividend date; collect the dividend; then sell the stock at your purchase price, thus netting the d...

**chem**

Some biphenyl(C6H5--C6C5) is produced as a by-product in the synthesis of benzoic acid . where does this come from?

**Algebra**

The formula's are not posting but I have solved the questions. I just need to know how I determine how the equation is undefined. 1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by a. What is the cost to remove 75% of the pollutant? b. Wha...

**Algebra**

The cost, in millions of dollars, to remove x % of pollution in a lake modeled by What is the cost to remove 75% of the pollutant? 6000/¨€(200-2(.75)@$30.23 million) What is the cost to remove 90 % of the pollutant? 6000/¨€(200-2(.90)@$30.27 million) What is...

**Algebra**

I have an assignment due tonight and I believe I have solved it all correctly until I come to part d of the question. "For what value is this equation undefined?" How do I determine this? The Environment Environmental and wildlife preservation ensures future generati...

**cultural diversity**

Complete the following matrix by identifying 7 to 10 leaders or legislative events from both the Civil Rights and Black Power movements. The first leader is provided as a model.

**College Level Probability**

Four different written driving tests are administered by the Motor Vehicle Department. One of these four tests is selected at random for each applicant for a driver's license. If a group of 5 applicants (consisting of 2 women and 3 men) apply for a license, what is the pro...

**math again**

How does "How many gallons of a 12% indicator solution must be mixed with a 20% indicator solution to get 10 gal of a 14% solution?" turn into ".12x + .2(10+ -1x) = .14(10)"?? Please, I need to understand how it works! Thank you.

**math**

Thank you so much, I am very grateful.

**math**

How many gallons of a 12% indicator solution must be mixed with a 20% indicator solution to get 10 gal of a 14% solution?

**History**

Where can I find a copy of the Declaration of Independence?

**History- sue**

why do you think he meant all white men?

**History**

How should the phrase, "All men are created equal" be understood today, and why? What do you think Thomas Jefferson meant when he wrote these words in the Declaration of Independence in 1776, and why?

**history**

why, after 1765, did the American colonists increasingly find British imperial rule unacceptable? What had changed -- and why?

**Calc help**

find the area of the region enclosed by y=e^2x, y=e^5x, and x=1. i am having trouble seeing how this region looks like and having problems with how to start the problem in general. Much help is appreciated.

**Humanities**

i have to find the number of hajj pilgrims from a country (besides america)annually. right now, im finding the number of hajj pilgrims from Indonesia in the year 1999-2004 and i cant find any good websites on it....any info or links that is related to the number of pilgrims fr...

**factoring**

factor this problem w^2 + w - 12 is my answer right? (w-2)(w+2)

**chem**

Make sure your equation is [b +-(b^2 - 4ac)^(1/2)]/2a

**Pre-calculus**

1 D. 2 C. 3 A.

**Algebra**

-7x+-3

**Math**

Maximum: 57 Minimum: 50 Median: 54 Mode: 56 Give 12 sets of numbers using the above senarios?? Please Help!!

**statistics**

how do i prove that the angle between a tangent and a radius is 90 degrees?

**To James -- AED 200**

Thank you for your suggestion. I ended up finding a game on the internet that I was able to incorporate into my project and wrote my paper about it. Thank you for your help.

**To James -- AED 200**

I am sorry I have never used this before. I was just thinking if I could get help with some brainstorm type ideas I could look into a technology and devise something I could learn in the classroom. I was thinking about English language learners and maybe some kind of technolog...

**Chemistry**

Please do it i dont have all the materials and i need to do it today. PLEASE!!

**CHEM URGENT**

Infrared, ultraviolet, and visible radiation are all part of the electromagnetic spectrum. Arrange the three types of radiation in order of increasing energy.

**Geometry**

This problem can not be answered without the diagram. Sorry.

**English**

Where can I find an example of an argumentative essay on the Internet?

**Nutrition**

A pair of nutrients ( one mineral and one vitamin) that works together in the body.

**Math**

How can I write this as an algebraic expression: twice as old as Max's age a, less three years.

**algebra**

What is the slope-intercept form of an equation for the line that is parallel to 5x-3y=1 and passes through (0,-4)?

**space**

choose five elements of the universe and tell why they are amazing and wonderous

**8th grade math**

50 liters in 4 minutes

**French**

How do you say, "I've been friends with him since I was two?" in french? I know it's pretty simple, but I can't seem to remember... >.<

**Math**

What is the probability of obtaining at least one tail when a coin is flipped six times?

**advanced functions HELP!!!**

the function S(d)=93logd+65 relates the speed of the wind, S, in mile per hour, near the centre of a tornado to the distance that the tornado travels, d, in miles. a)Calculate the avg. rate of change for the speed of the wind at the centre of a tornado from mile 10 to mile 100...

**aadvanced functions HELP!**

nope i don't, the school makes it manditory to take advanced functions before calculus

**aadvanced functions HELP!**

the population of a town is decreasing at a rate of 1.8% per year. The current population of the own in 12000. a)write and equation that models the population of the town b)how long will it take for the population to decline to one quarter of its current population? c)calculat...

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