Wednesday

June 29, 2016
Number of results: 16,545

**physics**

Wiley Coyote (Carnivouous hungribilous) is chasing the roadrunner (Speediburd cant- catchmi) yet again. While running down the road, they come to a deep gorge, 22 m straight across and 101 m deep. The roadrun- ner launches itself across the gorge at a launch angle of 20◦...
*September 2, 2011 by squires*

**Physics of Modern Technology**

1) In a conventional explosion, when each molecule of high explosive chemically reacts, it produces about 4 x 10-18 J (joules) of energy. If each molecule of high explosive weighs as much as a single uranium 235 atom, and each uranium atom releases about 4 x 10-11 J in a ...
*September 24, 2014 by Anonymous*

**Physics of Modern Technology**

1) In a conventional explosion, when each molecule of high explosive chemically reacts, it produces about 4 x 10-18 J (joules) of energy. If each molecule of high explosive weighs as much as a single uranium 235 atom, and each uranium atom releases about 4 x 10-11 J in a ...
*September 24, 2014 by Anonymous*

**English**

Thank you very much for your corrections. These are the very last sentences of the day.I need to rephrase a few sentences, too. Thank you very much in advance. 1.Can you say “the aristocracy grew in importance/lost importance”? 2.First the serpent slithered forward, then ...
*April 10, 2010 by Franco*

**Energy**

Without energy we can't do work cuz we can't apply ne force on an object. Gravity, itself a force, when, say, pulls a ball down to the gorund it actually does work. Now for tht force, where does it get the energy from or what type of energy does it have? If u have a book ...
*June 20, 2005 by Mike*

**Environmental Science**

#54. In two or three well-developed paragraphs, define and list two characteristics of each of the following: coastal wetlands, coral reefs, and oceans. I'm not sure what it means by defining and listing two characteristics. here's my answer: Coastal wetlands are coastal land ...
*February 24, 2010 by y912f*

**economics**

A professor of economics gives multiple choice exams each semester. He curves the exams by giving the maximum possible points to the high score on the exam. For example, if a 50 question exam is worth 100 points and the top score in the class is 40, then each question is worth...
*November 24, 2009 by Felix*

**mat**

write the equation of the line passing through each of the given points with the indicated slope. give your results in slope-intercept form. (0, 5) , m = 1/4
*May 23, 2007 by Dee*

**math**

clasifying conics 4xsquared=64-64ysquared 4x^2 = 64 - 64y^2 4x^2 + 64y^2 = 64 .......divide each term by 64 (x^2)/16 + y^2 = 1 you should recognize the standard form of the equation of an ellipse.
*May 24, 2007 by krystall*

**Algebra**

Solve by using the quadratic formula. 3x^2=11x+4. Look up the formula if you don't know it already. In this case a = 3, b = -11 and c = -4. You get that by rewriting the equation in the standard form ax^2 + bx + c = 0 , where a, b, and c are constants.
*July 12, 2007 by Shaye*

**chemistry**

I asked this before, but got no response. A) If you make up a solution of 250 mL of 0.1 M TRIS in the acid form, what will be the pH? B) If you add 2 mL of 1 M NaOH to the solution in part A, what will be the pH? Thanks.
*February 3, 2008 by student*

**Biology- Carbohydrates**

Besides glycogen, what are the storage and quick-energy forms of carbohydrates found in animals and how are these form structurally related to each other?
*February 22, 2008 by Freddie G*

**calc**

The equation of the tangent line to y=f(x) at a=2 can be written in the form y=mx+b where f(x) =4sinx/4sinx+6cosx i already got 3/2 for m but i cant seem to find out how to get the value of b?
*May 9, 2008 by sonia*

**College English**

Is this a correct use of the word quintessence? Biblical hermeneutics form the quintessence of religion and faith through inquiry and reflection.
*September 18, 2008 by Eva*

**Pre-calculus-check answer please**

Write the standard form of the equation of the circle that is tangent to the line x=3 and has center at (-2,-7). Answer: (x+2)^2+(y+7)^2=49 Is this correct?
*October 13, 2008 by Lucy*

**intermediate algebra**

Write the equation of the line containing (-3,4) and perpendicular to y = 2/3x + 2. Write your answer in slope-intercept form. Not sure how to do this one. please help.
*November 6, 2008 by jennifer*

**intermediate algebra**

Write the equation of the line containing (-3,4) and perpendicular to y = 2/3x + 2. Write your answer in slope-intercept form. Not sure how to do this one. please help.
*November 7, 2008 by jennifer*

**intermediate algebra**

Write the equation of the line containing (-3,4) and perpendicular to y = 2/3x + 2. Write your answer in slope-intercept form. Not sure how to do this one. please help.
*November 7, 2008 by jennifer*

**physics**

A potential energy function for a two-dimensional force is of the form U = 3 x2y - 6 x. Find the force that acts at the point (x, y). (Use x and y as appropriate.)
*February 24, 2009 by Jessi*

**Nizwa**

What is dry ice? How do you convert it to its original form? Mention the name of the process involved. What happens to the energy of the matter during this process?
*October 25, 2010 by salim*

**Math**

How do I transform this into simple radical form... I have no idea how to do this could you please tell me the logic behind how you do this and step by step thanks (5^(1/2)-3^(1/2))^2 thanks again
*May 28, 2009 by Jake*

**Science**

When 1 gram of liquid water at 0 degrees Celsius freezes to form ice, how many total calories of heat are lost by the water and how do you know? a. 1 b. 0.5 c. 80 d. 540
*June 15, 2009 by Angie*

**mega urgently important maths**

the functions f and g are defined by f(x)=2/(x+1), x>0 g(x)=1-x^2, xER a)find value of fg(x)giving your answer in the simplest form. b) find f^-1(x) c) solve f(x)= f^-1(x)
*September 28, 2009 by ???*

**PHYSICS**

A potential energy function for a two-dimensional force is of the form U = 2.46x3 y - 5.05x (which has units of J). Calculate the force that acts at the point (1.26 m,1.18 m).
*September 29, 2009 by Luke*

**Algebra**

How do you change an equation to standard form (Ax+By=C) when given the slope and a point on the line? Does A,B, or C represent anything singificant like slope or x or y intercept?
*October 6, 2009 by Rylie*

**Algebra**

I have to find the vertex, axis of symmetry, and x intercepts of x^2-x+(5/4). I put it in standard form as -(x+-.5)^2+1.5. Thus, the vertex would be .5, 1.5. But the book's answer is 1/2, 1. How did they get this?
*November 8, 2009 by Erin*

**Math**

I need help in finding the vertex of a parabola using an equation in this form: Ax^2 + Bx+C I have a test on this tomorrow. For example: 3x^2 +1x - 2 How would I find the vertex in this?
*December 8, 2009 by Clair*

**algebra 1**

write an eaguation in slop-intercept form of the line that passes through the given point and is parallel to the graph of the given equation. 8.)2,-2;y=-x-2
*December 10, 2009 by Kayla*

**chemical equations**

5C(s) + 2SO2(g) > CS2(l) + 4CO(g) How many moles of carbon monoxide form at the same time that 0.246 mol CS2 forms?
*February 7, 2010 by Tristan*

**math**

i'm a poet... i dont know math!!! Write 3 X 10^7 km^3 , the total volume of the continental Antarctica ice sheet, in standard form. would it be 30000000000 ?
*February 21, 2010 by percy bysshe shelley*

**Math Trig**

Find the Cartesian form of the parametric equation. x = (2a)(cot T) y = (2a)(sin^2 T) how? lol here's what i got y = (sin^2 T) y = (2a)y^2 y = 2a then? do the same for X? i'm stuck there
*May 31, 2010 by kyu*

**Math/Calculus**

I need to know how to graph this equation to form a straight line: x = 1/2at^2 I would graph x versus t^2 but is that correct? Thank you very much!
*July 2, 2010 by Warren*

**computers**

an introduction to programming and visual basic 2008 page 39 programming challenges rules form design and flowchart for #3 sales tax. how do i do this?
*August 30, 2010 by Dawn*

**physics**

What approximate change in decibles does an observer experience form a sound source if the oberver moves to a new location that is 67% as far from the source?
*November 12, 2010 by Amber*

**5th grade math**

Form a equivalent problem for 4 1/2 divided by 1/2 by doubling both the dividend and divisor. Then find the quiotent. Would that be 9 divided by 1 =9
*November 15, 2010 by Jill*

**math**

A circular piece of sheet metal has a diameter of 20 in. The edges are to be cut off to form a rectangle of area 160in^2. What are the dimensions of the rectangle?
*December 8, 2010 by Sabel*

**math 5th grade**

by what fraction name for 1 must 2/3 be multiplied to form a fraction with a denominator of 15? also what is the number in this sequence ...,100,10,1,...? would it be -1? thank you
*January 19, 2011 by jill*

**Chemistry**

Write and balance an equation for a reaction in which iron (Fe) and hydrochloric acid (HCL) reacto to form iron chloride (FeCl2) and hydrogen (H2)
*February 9, 2011 by Sadie*

** Electrical **

Given the following system equations: -Put them into Standard Form, and -Simplify using Cramer’s rule IS + G1 (VA + VB) – G2VB = 0 G2VB + G1 (VA – VB) = 0
*March 12, 2011 by Chris Williams*

**Algebra**

How can you tell whether a polynomial is written in factor form. Construct a trinomial whose greatest common factor is 2x^2. Am not understanding this...Please help.
*March 29, 2011 by Amy L*

**Treacher girls scholl**

A hydrocarbon is burnt completely in air to form 13.2g of carbon dioxide gas and 7.2g of water. What is the molecular formula of the hydrocarbon?
*March 28, 2011 by Esh*

**Chemistry**

In a hydrogen atom, form what energy level must an electron fall to the n=3 level to give a line at 1.28 micrometers (um) in the infrared region?
*March 28, 2011 by Kamila*

**trig**

{Given: cos(A)=\frac: sqrt{203}/{18} {Find: tan(A) Find the positive value of the above in simplest radical form.
*March 19, 2011 by bbee*

**Math 11th Grade**

Use Demoivre's Theorem to find the fourth roots of -16. Leave the four roots in trigonometric form. How the heck do i do this?
*April 3, 2011 by Carl*

**Calculus (pleas help!!!)**

Find the formula for a function of the form y=Asin(Bx)+C with a maximum at (0.5,0), a minimum at (1.5,−4), and no critical points between these two points.
*April 6, 2011 by Karku*

**Geology**

How did the Hawaiian Islands form geologically? How could the relative age of the islands be determined? (In other words, how would you know which island was oldest, which was youngest, etc.)?
*July 21, 2011 by Henry *

**college general chem**

If 15.0 of is dissolved in enough water to form 270 of solution, what is the molarity of the solution? How many milliliters of 4.45×10−2 contain 4.05 of solute
*October 3, 2011 by ronie*

**Pre Algebra**

I am having a problem with slopes and intercepts problems. Write each equation in slope-intercept form. Find slope and y-inercept. 3x - y = 14
*November 28, 2011 by Rosalind*

**Math**

Explain how to determine the value of x that gives a maximum for a transformed cosine function in the form y=acos(k(x-d)) + c, a>0, if the maximum for y=cosx occur at (0degrees, 1)
*December 5, 2011 by Jacob*

**chemistry**

Aluminum metal generates H2 gas when dropped into 6.00 M HCl. Calculate the mass of H2 that will form from the complete reaction of 0.365 g Al with 8.40 mL of 6.00 M HCl.
*January 26, 2012 by annie*

**algebra**

use any three of the digits 2,3,4 and 6 to form an 8 digit factor and a two didgit factor with a estimated product that is between 140 and 250
*February 18, 2012 by brittany*

**algebra**

Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form, ax^2+bx+c=0 -sqrt3, 3sqrt3
*March 28, 2012 by Terry*

**math**

marty has saved 72 dollars he spent 8 dollars write a ratio as a fraction in simplest form to represent what portion of his saving he has f\left
*May 3, 2012 by Taylor*

**Math. Fractions**

Emily exercised from 4:05pm tob4:32 pm For what part of an hour did Emily exercise ? Write the fraction in simplest form Would it be 27/60 = 9/20
*May 17, 2012 by Marco*

**Physics**

A pot contains 243 g of water at 78°C. If this water is heated and all evaporates to form steam at 100°C, what is the change in the entropy of the H2O?
*June 21, 2012 by Alex*

**Chemistry**

calculate the molarity of a solution made by dissolving 0.750 grams of Na2SO4 in enough water to form exactly 850 mL of solution.
*October 16, 2012 by Anonymous*

**Science Help!**

How much heat is needed to cause the following irreversible reaction? 200 g of liquid H2O at 50°C is heated to form 200 g of steam at 120°C
*October 22, 2012 by LeAnna*

**algebra**

Rewrit the equation in vertex form. Name the vertex and y-intercept. y=3/5^2+30x+382 I need some help do not understand these type of problems.
*October 31, 2012 by Lee*

**algebra 2**

given the zeros,write a polynomial equation in factored form.zeros: -45,99,127,358 show all the step please.
*December 7, 2012 by lisa*

**College Algebra**

Write the equation of the circle in standard form. Find the center, radius, intercepts and graph the circle. x^2+y^2+14x+18y=-81
*January 10, 2013 by Amary*

**physics**

a particle of mass(m) attack to a string of length (r) b wave round in a circle with speep(b) fine the form of the expression for the tension the string
*February 22, 2013 by Anonymous*

**calculus**

Integral of 10 / (5x^2 - 2x^3) Do not determine the numerical values of the coefficients. Just wanted to know why when I write out the form of the partial fraction decomposition there is A/x + B/x^3 + C/ (x^2 + 4) Why isn't it just A/x^3 + B/ (x^2 + 4)?
*March 2, 2013 by Daniel*

**Algebra 1**

Write an equation in slope-intercept form of the line that passes through the given point amd is parallel to the graph of each equation* (2, -7) y=x-2
*March 13, 2013 by Summer Taylor*

**pre calculus**

Write the equation of the circle in standard form. Find the center, radius, intercepts, and graph the circle. x^2+y^2-12x-4x+36=0 How on earth do I do this?
*March 28, 2013 by sharon*

**Quantitative Reasoning ( College Freshman)**

For the quadratic function : y=-0.25(x+8)(x-6) write the function in the vertex form y=a(x-h)^2+k by completing the square. Show all work.
*April 5, 2013 by Bonni*

**Mathematics**

Let x,y,z be non-negative real numbers satisfying the condition x+y+z=1. The maximum possible value of x^3y^3+y^3z^3+z^3x^3 has the form a/b where a and b are positive, coprime integers. What is the value of a+b?
*May 27, 2013 by hope any one can help*

**Maths**

Let x,y,z be non-negative real numbers satisfying the condition x+y+z=1. The maximum possible value of x^3y^3+y^3z^3+z^3x^3 has the form ab where a and b are positive, coprime integers. What is the value of a+b?
*May 29, 2013 by ABCD*

**Please Help**

Let x,y,z be non-negative real numbers satisfying the condition x+y+z=1. The maximum possible value of x^3*y^3+y^3*z^3+z^3*x^3 has the form a/b where a and b are positive, coprime integers. What is the value of a+b?
*May 30, 2013 by Mathslover*

**differential calculus**

a bed is in a form of a circular sector. find its radius if the area of the sector is 1000 centimeter square and its perimeter is a minimum
*July 31, 2013 by len*

**science / rocks **

what step in the rock cycle creates the sediment from which sedimentary rocks form I think its erosion please see if im right or not
*November 15, 2013 by rian*

**Algebra 1 **

Write an equation in standard form of the line that passes through the given point and has the given slope m. (5,-1) m=2 I not sure about this one
*November 21, 2013 by Jynessa*

**Algebra 1**

Write an equation in standard form of the line that passes through the given point and has the given slope m. Can someone check my answers (-2,6) m=1 -1x+y=8 (-7,8) m=-3 3x+y=-13 (9,-10)m=-4 4x+y=26 (-15,-4)m=1/2 -1/2x-y=23/2
*November 21, 2013 by Jynessa*

**Math**

Please help me solve this!! I'm really struggling with this topic Write an equation in slope intercept form with a y-intercept of 1 and is parallel to the given line
*November 24, 2013 by Hannah*

**Math 117 **

Why is it important to find nonperfect roots in radical form to simplify the process of performing basic operations with radical expression?
*March 27, 2014 by stephanie*

**Chemistry**

Which clusters of orbitals would form a "octahedral" electron geometry and would also be possible within the valence shell of an atom?
*May 2, 2014 by Vic*

**biology**

A bacterial strain divides once every 30 minutes. After 90 minutes, a single bacterium can form a total of ___ bacteria
*June 9, 2014 by Anonymous*

**Pre-Calculus**

I'm kind of stuck on how to do this. Can someone help me? Thanks! Write the equation of the line with slope -2 that passes through the point (-1, -3) in slope-intercept form.
*September 14, 2014 by Robert*

**chemistry**

How many grams of Cu (s) are needed to form 6.00g Ag from a solution of AgNO3? The reaction is Cu (s)+2Ag^+(ag)--> Cu^2+(aq)+2Ag (s) the molar masses are: Ag=107.868 and Cu=63.546g
*September 14, 2014 by darya*

**Pre-Calculus**

help please in what form is the following linear equation written: 3x-2y=4 Slope-intercept Point-slope Standard Rise-run
*September 24, 2014 by Anonymous*

**Math**

I also need help with Find the component form of v if absolute value of v=2 and the angle it makes with the x-axis is 30 degrees. I cannot find a book example. help me.
*November 22, 2014 by Amber*

**Math**

the air needs to be humid up to about 18,000 ft for a hurricane to form. write an inequality to represent this altitude a of the air above the ocean
*March 9, 2015 by Angelina*

**math**

let x and y be two complementry angles. form an equation and draw its graph. find graphically measures of the other angle. if one of the angle is
*March 24, 2015 by pintu*

**Health**

________ dependence is the most common form of chemical dependence in the United States. A. Alcohol B. Tobacco C. Nicotine D. Marijuana I think its C.
*April 14, 2015 by Vaughn*

** college math**

Write each ratio or rate as a fraction in simplest form. l 1/2 to 3/4 That's One and one half to three fourths I think the answer is 2/1
*April 23, 2015 by Carrie*

**Alg 2**

If I were to graph it, the vertex would be (3,-7) so what would my other point be? Write this equation : y =4(x-3)^2 -7 in standard form . answer: y=4x^2 -24x +29 idk if this is right?
*June 12, 2015 by Jess*

**E& M physics**

Three electrons form an equilateral triangle 0.600 nm on each side. A proton is at the center of the triangle. What is the potential energy of this group of charges?
*October 2, 2015 by Master Blaster*

**Precalc**

Why the polar form(2.83,45) is written a rectangular complex number like this: 2.83*cos45 + j*(2.83*sin45) I would like some explication please. Thanks!
*December 26, 2015 by Andrei*

**Maths**

All prime numbers less than ten are arranged in descending order to form a number.Write down the number formed
*January 7, 2016 by Mariam atieno*

**MAth**

Find the smaller angle given the following: The angles are adjacent and form 120° angle. One is 5 times as large as the other.
*January 30, 2016 by Stefanie Thews*

**algebra**

Find the equation of a line that is perpendicular to the line y = 1/4x + 5 and contains the point (-6, 0) Y=________ (Type your answer in slope-intercept form.) qaz
*February 4, 2016 by edward*

**Math**

1)express 2Igsquarerootx-Ig4/3x^2+log(4x^3)/log(100) in the form aIgx+Igb, where a and b are constants. 2)If InK=Ina-Inb+Inc-t/bc, show that K=ac/b(e)^-t/bc
*April 2, 2016 by Trinity*

**Math**

Find an equation in standard form for the ellipse that satisfies the given condition with major axis endpoints (1,-4) and (1,8), minor axis length 8.
*May 11, 2016 by Akau*

**Math**

1)Give 2 examples in which negative numbers can be used in describing a measurement or an event. 2)Write each rational number in the form, A/b, where a and b are integers and b is not equal to 0. example A: 0.7 ________ Sorry don't get the above
*September 18, 2007 by Anonymous*

**Pre-Calculus**

I do not know how to work this problem: Find the area of the region between the graph of y=x^3 and the x-axis from x=1 to x=4. I am also having trouble with: Write -1-i in exponential form. Any help would be greatly appreciated.
*September 28, 2008 by Lucy*

**Math**

Using only addition and subtraction, without changing the order of the digits, and having just three operations, form an equation out of 123456789 that equals 100.
*October 14, 2008 by Jake*

**general science**

This gas is principally shipped and used in gaseous form for excimer lasers, light bulbs, window insulation, ion propulsion, medical applications and laboratory R & D.
*January 29, 2009 by Anna*

**math (reiny) got an ans but would like work it pl**

Given that g(x)= 2x+1/5 and f(x)=x+4 Calculate the value of g(-2) 2(-2)+1/5= -3/5 Is this right?? How do i write an expression for gf(x) in the simpliest form?? And how do i find inverse functions such as g`1(x)?
*July 1, 2009 by Maxine*

**Algebra**

I had to write the standard form of the equation for the circle consisting of the endpoints (0,0), (6,8). I got (x-3)^2+(y-4)^2=15. But my book said the fifteen should be a twenty five. How would they have gotten 25? Thank you.
*September 30, 2009 by Therese*

**Civics**

What have presidents justified under the principles of "immediate needs of the nation" and "a mandate from the people?" Would the answer be: It has shaped the office of the presidency into its modern form.
*October 14, 2009 by Jennifer*

**Math**

Write an equation in standard form for the line whose slope is undefined that passes thru (5,-3) Please help me solve, my answer is 5x-3y=0... It was marked wrong and i can not seem to figure it out.
*November 30, 2009 by Gaby*