Friday

October 24, 2014

October 24, 2014

Total # Posts: 206

**Algebra 2**

Find all real zeros of the function f(x)=x^3-27x
*October 20, 2014*

**physics**

In the Bohr model of the hydrogen atom, an electon mass= 9.11 x 10^-31 kg orbits a proton at a radius of 5.29 x 10^-11 m. The proton pulls on the electron with a force of 8.20 x 10^-8N. what is the speed of the electron? what is the period of the electron? I really need help ...
*September 30, 2014*

**Algebra 2**

Write the Expression as a complex number in standard form. 5i(3+2i)(8+3i)
*September 22, 2014*

**physics**

A military helicopter on a training mission is flying horizontally at a speed of 75.0m/s when it accidentally drops a bomb (fortunately, not armed) at an elevation of 310m . You can ignore air resistance. a:How much time is required for the bomb to reach the earth? b:How far ...
*September 22, 2014*

**Chemistry**

Nevermind i got the answer(: It is 135 Torr
*September 20, 2014*

**Chemistry**

A solution contains naphthalene (C10H8) dissolved in hexane (C6H14) at a concentration of 15.00% naphthalene by mass. Calculate the vapor pressure at 25 ∘C of hexane above the solution. The vapor pressure of pure hexane at 25 ∘C is 151 torr. I keep getting 168 torr...
*September 20, 2014*

**Algebra 2**

thanks
*September 4, 2014*

**Algebra 2**

For the graph y= ax^2 + bx + c, show that the y-coordinate of the vertex is -b^2/4a + c.
*September 4, 2014*

**Astronomy Question about Neutrinos**

I can't seem to figure this out, I know that neutrinos have nonzero mass but I don't know how that can help me figure this out The mass of a neutrino is zero. equal to the mass of a proton. equal to the mass of an electron. less than the mass of an electron but its ...
*May 4, 2014*

**AStronomy/ Math**

Thank you
*May 4, 2014*

**AStronomy/ Math**

I do not understand how to do one of my online homework questions: What is the Schwarzschild radius of a 100 million-solar-mass black hole? The mass of the Sun is about 2 × 1030 kg, and the formula for the Schwarzschild radius of a black hole of mass M is: R=2GMc2, where...
*May 4, 2014*

**Physics**

A 245 g toy car is placed on a narrow 70-cm-diameter track with wheel grooves that keep the car going in a circle. The 1.0 kg track is free to turn on a frictionless, vertical axis. The spokes have negligible mass. After the car's switch is turned on, it soon reaches a ...
*April 19, 2014*

**Geometry - Area**

Thank You so much Damon!
*April 15, 2014*

**Geometry - Area**

Ms. Sue would you be able to help me! I don't want the straight answer i want to actually learn how to solve a question like this!
*April 15, 2014*

**Geometry - Area**

Find the area of a regular hexagon with an apothem 10.4 yards long and a side 12 yards long. Round your answer to the nearest tenth.
*April 15, 2014*

**math**

Quinn used a scale drawing to build a soccer field near his school. Initially, he wanted the field to be 28 yards long and 17.5 yards wide. He decided to change the length of the field to 36 yards. If the width is to be changed by the same scale factor, what is the new width ...
*January 29, 2014*

**Math Help please Check my answer**

You have $59.95 in your wallet and want to buy some new CDs. If the CDs are $11.99 each, what number of CDs, x, can you buy? Write and solve an inequality. My answer: 11.99x ≤ 59.95 11.99x/11.99 ≤ 59.95/11.99 x ≤ 5
*January 14, 2014*

**Science**

1. The fossil remains of a ____ were discovered and named Lucy. (1 point) A. Neanderthal B. Cro-Magnon C. prosimian D. hominid 2. Scientists can tell whether organisms are closely related by comparing there ____. (1 point) A. Hair color B. Teeth C. DNA D. Scientific names 3. ...
*December 22, 2013*

**math (please help)**

Thank You so much Jai
*October 31, 2013*

**math (please help)**

1. Write the equation for the horizontal line that contains point G(-8, 8). 2. What is an equation for the line that passes through points (-1, -4) and (1, 4)? Write the equation in slope-intersect form. 3. Write an equation for the vertical line that contains point E(10, -3).
*October 31, 2013*

**math**

1. A skateboard ramp has a 158º entry angle. Find the measure of ∠1. A.) 22º B.) 68º C.) 78º D.) 58º 2. Which of the following equations parallel to the line passing through A(-2, 7);B(-2, -2)? A.) y = -2 B.) y = x C.) 3x = 5 D.) -2x = 7y 3. ...
*October 30, 2013*

**English**

To me "Taking something to heart" means that whatever he/she had said had meant a lot to me (even if its good or bad). other words to me it's like taking something seriously than what it should be.
*October 30, 2013*

**Algerbra**

do you have an Ti - 84? that will work it for you in a faster and reasonable manner.
*October 30, 2013*

**Geometry**

1.) A skateboard ramp has a 158° entry angle. Find the measure of ∠1. 2.) Which of the following equations is parallel to the line passing through A(-2, 7);B(-2, -2)? 3.) Which of the following equations would graph a line parallel to 3y = 2x - x + 5? *Please help me!
*October 29, 2013*

**chemistry**

Determine whether a solid forms when solutions containing the following salts are mixed. If so, write the ionic equation and the net ionic equation. KCl and Na2S
*October 27, 2013*

**Algebra 1**

d is to 4 as 32 is to 56. if answer is a fraction change to decimal
*October 3, 2013*

**Algebra 1**

A triangle has a perimeter of 81 inches. The side lengths can be found by x, 3x-1, and 4x+2 what is the value of x?
*October 3, 2013*

**Math **

Write an algebraic expression for "55 more than the product of 134 and n"
*October 1, 2013*

**Math**

Lindsey has 47 coins in her change purse that are either dimes or quarters. If n represents the number of quarters she has,write an expression in terms of n that describes the number of dimes
*October 1, 2013*

**Math**

What is an algebraic expression for "49 more than q"
*October 1, 2013*

**earth science**

what are the variables on rocks and minerals
*September 27, 2013*

**alegbra 1**

Tell whether each number in the list is a real number, a rational number, an irrational number, an integer, or a whole number. square root 3, 5.5, negative square root of 16,and 0
*September 26, 2013*

**PHYSICS**

A woman goes out running. She first travels 5.2km north. She then turns and travels 3.6km west. Finally, she turns again and travels 2.6km south. We are assuming a flat rectangular world. If a bird were to start out from the origin (where the woman starts) and fly directly (in...
*September 17, 2013*

**Algebra**

The stopping distance D in feet for a car traveling at x miles per hour is given by d(x)= (1/12)x^2+(11/9)x. Determine the driving speeds that correspond to stopping distances between 300 and 500 feet, inclusive. Round speeds to the nearest mile per hour.
*June 9, 2013*

**English**

1. Attention Grabber for Odyssey: 2. State/Explain topic: 3. Thesis Statement: Please help me with this!
*May 22, 2013*

**World Geography**

I know what she met, but we don't have a book, it was the voice recorder and it doesn't even say the answers to these.
*May 10, 2013*

**World Geography**

Well everything is virtual and we use technology for everything and i am a visual learner not jus someone that listens to something snd learns... It's a quick check.
*May 10, 2013*

**World Geography**

But we don't have a book... I'm homeschooled so we don't have books.
*May 10, 2013*

**World Geography**

Tbh i need help!
*May 10, 2013*

**World Geography**

1.Which of the following demographic characteristics distinguishes Europe's population from that of Asia? A.) More Europeans inhabit rural areas. B.) The European population is much younger. C.) Europeans are more concentration in urban areas. D.) Europe has a larger ...
*May 10, 2013*

**World Geography**

Thank You, Ms.Sue!
*May 9, 2013*

**World Geography**

1.B. 2.B. 3.A. 4.C. Are these correct?
*May 9, 2013*

**World Geography**

Ms.Sue, is number 5. B ?
*May 9, 2013*

**World Geography**

1. During the late 18th and mid-19th centuries, Europeans and North Americans were attracted to nearby coastal waters due to potential economic gains from? A.) Catching trout and cod fish. B.) Catching seals and whales. C.) Shipbuilding. D.) Finding riches and unexplored ...
*May 9, 2013*

**math**

In a class of 50 students, 35 are Democrats, 17 are business majors, and 6 of the business majors are Democrats. If one student is randomly selected from the class, find the probability of choosing a Democrat or a business major.
*April 28, 2013*

**chemistry**

If 13.5 ml of concentrated (17.0 M) of sulfuric acid was spilled on the chemistry counter, calculate the mass of sodium bicarbonate needed to neutralize the acid
*April 28, 2013*

**AP World History**

I have to analyze how sub-Saharan Africa & south & south-east Asia's relationship to global trade patterns changed from 1850 to present. please help !
*April 21, 2013*

**General(dont know actual subject)**

Thts not wat i expected from you. I am sure i chose the right one otherwise i wouldnt tell u. Because tht would literally be wasting my time as well as yours. So from tht u should know i chose the rite one. I dont know which is why i was asking you. What are u supposed to help...
*April 2, 2013*

**General(dont know actual subject)**

My project is research based... I chose plastic surgery.... Question is: why have you chosen this task? ( in the box below write a paragraph explaining why you have selected your particualar task idea.) I really cant think of why i chose plastic surgery among all the other ...
*April 2, 2013*

**Math trigonometry**

Find the measures of the acute angles of a right triangle whose legs are 9 cm and 16 cm long.
*March 16, 2013*

**6th grade math**

Equal 15=15 they are dance same number
*January 15, 2013*

**Educational Assitant**

Say that is his opinion everyone has an opinion
*January 15, 2013*

**4th grade math**

If he starts with a white bead every fourth time boommtheres a white head 1_234_5_678_9_ 1, 5, 9
*January 14, 2013*

**5th grade math**

Instead of using fractions use quarter I have one dollar and three quarters and 2 dollars and three quarters try this
*December 16, 2012*

**5th grade math (word problems)**

For the first question divide 3 in two 25 your answer is the equation subtracted from 25 2nd question=200×20=your answer
*December 12, 2012*

**3rd grade language**

1-3 follow ms sue and Joshua but 4 answer=is=state of being
*December 11, 2012*

**grammer**

Who is correct
*December 6, 2012*

**5th grade math**

what is a word problem for 4.23x10
*December 5, 2012*

**Elementary**

edie needs to start from the ones place then subtract the rest of the problem. simple as pie.
*December 5, 2012*

**Spelling 4th grade**

Fly is correct jump is wrong
*November 26, 2012*

**chemistry**

Determine whether a solid forms when solutions containing the following salts are mixed. If so, write the ionic equation and the net ionic equation. KCl and Na2S
*November 21, 2012*

**Chemistry**

If argon has a volume of 5.0 dm3 and the pressure is .92 atm and the final temperature is 30 degrees celcius and the final volume is 5.7 L and the final pressure is 800 mm Hg, what was the initial temperature of the argon?
*November 19, 2012*

**Algebra**

A motorcycle breaks down and the rider has to walk the rest of the way to work. The motorcycle was being driven at 45mi/hr and the rider walks at a speed of 6mi/hr. Teh distance from home to work is 25 miles and the total time for the trip was 2 hours. How far did the ...
*November 11, 2012*

**Angular Speed-Physics**

Stars originate as large bodies of slowly rotating gas. Because of gravity, these clumps of gas slowly decrease in size. What happens to the angular speed of a star as it shrinks? Explain.
*November 1, 2012*

**Physics Inertia!**

Rank from fastest to slowest. a)a solid ball rolling down a ramp without slipping b)a cylinder rolling down the same ramp without slipping. c)a block sliding down a firctionless ramp with the same height and slope. Select all that apply. The ball is fastest The cylinder is ...
*October 30, 2012*

**Physics**

An asteroid with mass m = 1.85*10^9 kg comes from deep space, effectively from infinity, and falls toward Earth. How much work would have to be done on the asteroid by friction to slow it to 550 m/s by the time it reached a distance of 1.50*10^8 m from Earth?
*October 16, 2012*

**Math (kindergarten)**

18 + 21 = 39 Answer: 39
*October 10, 2012*

**physics**

Henry almost had it right.... s=(2+4+4.5)km/ 20min --> convert to m/s: s=10.5km/20min x 1000m/1km x 1min/60s --> 8.75 m/s
*October 4, 2012*

**algebra**

A board is leaning against a building so that the top of the board reaches a height of 18 feet. The bottom fo the board is on the groung 4 feet away from the wall. What is the slope of the board as a positive number?
*September 30, 2012*

**algebra**

simplify 36/3*4-(-2) ?
*September 19, 2012*

**physics**

What is the final speed?
*September 14, 2012*

**physics**

Light-rail passenger trains that provide transportation within and between cities are capable of modest accelerations. The magnitude of the maximum acceleration is typically 1.3 {\rm m}/{\rm s}^{2}, but the driver will usually maintain a constant acceleration that is less than...
*September 14, 2012*

**chemistry**

Why is it important to list what you already know about a problem ?
*September 3, 2012*

**Physics (one more)**

A lead ball has a volume of 94.3 cm3 at 19.3°C. What is the change in volume when its temperature changes to 34.3°C? Someone on here has already answered this but it was wrong!
*June 22, 2012*

**PHYSICS please!!!!**

A cube of wood and a cube of concrete, each 0.17 m on a side, are placed side by side. One of the long faces of the rectangular prism formed by the two cubes is held at 17°C, and the opposite long face is held at 32°C. What is the total rate of heat transfer through ...
*June 22, 2012*

**physics....**

nevermind I get it
*June 12, 2012*

**physics....**

I don't understand why you're multiplying by two for the second question.
*June 12, 2012*

**world history/World Geography**

B. Is the correct answer for this question. Source: Took a World Geography with the same question and got a hundred, and the correct answer is B. (Courtnei, A is wrong answer.)
*May 1, 2012*

**Humanities**

Is the answer C?
*April 27, 2012*

**Astronomy**

Can you please show me how you calculated your answer?
*March 9, 2012*

**Astronomy**

The maximum wavelength of emission from Neptune's cloud tops is 6.0 x 10-5m. Using this value, determine the temperature of Neptune's outer atmosphere.
*March 9, 2012*

**Physics**

A river is flowing 4.0 m/s to the east. A boater on the south shore plans to reach a dock on the north shore 30.0 Degrees downriver by heading directly across the river. What should be the boat's speed relative to the water?
*February 6, 2012*

**Physics**

A river is flowing 4.0 m/s to the east. A boater on the south shore plans to reach a dock on the north shore 30.0 Degrees downriver by heading directly across the river. What should be the boat's speed relative to the water?
*February 6, 2012*

**algebra**

if a 12 apple weigh 5lb how much 36 weigh
*February 6, 2012*

**Physics**

1. set it up: s=d/t --> s=(2+4+4.5)km/ 20min 2. Convert to meters/ seconds s= 10.5km/20 min x 1000m/km x 1min/60s= 8.75 m/s
*January 9, 2012*

**Astronomy**

Thank you for your help!
*December 12, 2011*

**Astronomy**

Explain the idea of parallaz. The closet star to the Sun, Proxima Centauri, is 4.2 light years away from us. What is its parallax angle?
*December 12, 2011*

**Science**

Okay, say im doing a science fair project, and I am not really good at coming up with questions, what would be a good question to ask about Newtons First Law of Motion
*November 28, 2011*

**Astronomy**

If we assume the Sun is made totally out of hydrogen, how many hydrogen atoms are contained with the Sun? If the Sun converts half of these hydrogen atoms into helium over its lifetime of about ten billion years, how many hydrogen atoms are converted per second? Mass of Sun = ...
*November 22, 2011*

**Astronomy**

Calculate the wavelength of peak emission for a typical sunspot and compare it to that of the photosphere. How many times brighter is the photosphere than a typical sunspot? (Hint: Assume the photosphere and a sunspot are good blackbodies for these calculations.)
*November 21, 2011*

**Physics**

Posted earlier but I wrote it incorrectly. How fast would a rocket have to be going in order to completely leave the solar system? (Assume that the Sun is the only mass in the solar system and that the rocket is beginning its journey from Earth's orbit?)
*September 30, 2011*

**Physics**

How fast would a rocket have to be going in order to completely leave the solar system? (For the second part of this problem, assume that the Sun is the only mass in the solar system and that the rocket is beginning its journey from Earth's orbit?)
*September 30, 2011*

**Physics**

How fast does a rocket need to be going to break free of Earth's gravity? How fast would it have to be going in order to completely leave the solar system? (For the second part of this problem, assume that the Sun is the only mass in the solar system and that the rocket is...
*September 30, 2011*

**Physics**

How fast does a rocket need to be going to break free of Earth's gravity? How fast would it have to be going in order to completely leave the solar system? (For the second part of this problem, assume that the Sun is the only mass in the solar system and that the rocket is...
*September 29, 2011*

**science**

what effect does sugar water have on a plant?
*September 20, 2011*

**Algebra**

what is incorrect in this argument: the equation 5x + 3 = 3 + 5x isalways true because of the symmetric property of equality
*September 14, 2011*

**French**

Please help me unscramble the following words in french: penctoier uernigrsul aceir cuehaebrisnfa arlabtce botromen eercn nealum lstaa
*September 11, 2011*

**Physics**

A particle starts from xi = 10 m at t0 = 0 and moves with the velocity graph shown in the graph below. Sorry for no graph it's at 12 m/s when time is zero. Moves down consistently so that it is 8 at 1 4 at 2 0 at 3 and negative 2 at 4. (a) What is the object's position...
*September 5, 2011*

**calculus**

In a problem where you have to solve the limit f(x) as x approaches x sub zero, what does x sub zero mean?
*August 8, 2011*