Monday

February 8, 2016
Number of results: 67,122

**calculus. please helppp!!**

1.) values of f(t) are given in the following table: t 0 2 4 6 8 10 f(t) 137 112 88 68 49 34 Estimate (f prime) f^' (2) and f^' (8) Please show work so I can understand. I'm really stuck. if the table comes out messed up, the values are: (0, 137) (2, 112) (4, 88) (6, 68) (8, ...
*February 22, 2012 by JJ*

**HELPPP~Reading! ! !**

Can you PLEASE PLEASE PLEASE PRITTY PLEASE WITH A CHERRY ON TOP help me find a link that will give me the meanings of idioms?
*April 10, 2012 by Lily Palmer*

**CALCULUS WXMAXIMA !!PLEASE! **

y=log(100493/40000*x-1) y=atan(100493/40000*x+1) y=exp(-100493/40000*x+1) Note you will need 2 integrals to represent the area. Approximate the area of the region bounded by the given curves. I can do it with two but kinda struggling over here please helppp!
*March 7, 2012 by Jordan *

**Algebra 1**

What is the solution? use elimination . 4x-y=23 7x-y=21 PLEASE HELPPP!!!!
*January 5, 2016 by Sierra Elizabeth*

**Maths Please Helppp**

S=1+2*(1/5)+3*(1/5)^2+4(1/5)^3...... If S=a/b, where a and b are coprime positive integers, what is the value of a+b?
*June 19, 2013 by Mathslover*

**AP CAlc. AB Please helppp!! **

f(x)=|x|+1 Let A(r) be the enclosed by the x axis, the line x=-2, the graph of the function f, and the line x=r for any r=>-2 A) Write A(r) as a piecewise function with its joints at r=0 Please walk me through each step i am really confused!!
*September 8, 2014 by Lily *

**I HAVE A MATH TEST TOMORROW HELPPP PLEASE!**

im not sure how to find the first four terms of each arithmetic sequence tn=4+(n-1)(3) helpp me pleasee!
*May 27, 2008 by Mandy*

**I HAVE A MATH TEST TOMORROW HELPPP PLEASE!**

im not sure how to find the first four terms of each arithmetic sequence tn=4+(n-1)(3) helpp me pleasee!
*May 27, 2008 by Mandy*

**chemistry... HELPP**

Place charges and electron dots as needed on each ion. As Se Br K Ca Ga. I answered: As3+ Se2- Br- K+ Ca2+ Ga2+ but i got it wrong so please helppp!!!
*October 7, 2012 by joane *

**english**

can you please tell me if this is a sentence or fragment: The plan to have a class reunion. I think it's a sentence but idk because i can continue it by adding "is cancelled" in the end. How to know if it's already a sentence? of it's still a fragment? PLEASE HELPPP
*November 27, 2014 by HELP PLEASE*

**algebra**

CAN SOMEONE PLEASE HELPPP!? I NEED HELP IN ALGEBRA, SIMPLIFYING RADICALS! SIMPLIFY THE SQUARE ROOT OF 45a SQUARED!
*May 20, 2008 by I NEED HELPPPP!**

**math**

whats the product of -8x^2y and-2xy^3? use law of exponents to find the product. show your work. please helppp
*April 15, 2012 by Karley*

**Physics**

An object moving to the right has a positive acceleration which is decreasing. Is this object speeding up or slowing down? Explain why? Please helppp
*January 29, 2012 by Anonymous*

**US HISTORY**

Could someone help me conclude an essay on prohibition. I am writing: even though there were laws and movements for prohibition, it actually didn't work. PLEASE HELPPP!!!
*February 28, 2012 by DAN*

**PHYSICSSS PLEASE HELP ANYONE**

A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees calculate acceleration ...
*February 12, 2012 by Anonymous*

**PHYSICS IS THERE ANYONE WHO WUD HELP PLEASE**

A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees calculate acceleration ...
*February 12, 2012 by Anonymous*

**MATH**

f(x)=x/x^2 – x simplify g(x)=????helppp
*January 30, 2012 by Anonymous*

**Physics HELPPP**

(0 m/s)^2 - (23.7 m/s)^2 divided by 2(9.00 m/s)^2 ?
*February 1, 2016 by Erica*

**algebra 1 NEED NOW!!! PLEASE HELPPP**

A rectangular picture measuring 3 in. by 7 in. is surrounded by a frame with uniform width x. Write a quadratic function in standard form to show the combined area of the picture and frame.
*July 1, 2013 by lisa*

**AS Physics**

A driver leaves his car without applying the hand brakes on a road inclined at an angle of 25 degrees. The car starts to roll down the road with the driver chasing from behind after moving a distance of 20 m the speed of the car is 5.0 ms-1. Calculate the coefficient of static...
*October 4, 2014 by Ariana*

**HELPPP**

NO ONE HAS RESPONDED TO ME ALL DAY !!!
*October 15, 2015 by kamryn*

**science**

Given that 6.20 x 10^23 ethanol molecules have a mass of 46.04g calculate the number of ethanol molecules in a film of ethanol that is 3.08 mm by 0.0015 mm. Assume the density of ethanol is 0.790 g/mL please helppp
*August 28, 2012 by anonymous*

**Pre-Algebra:HELPPP**

Factor: y^3-3y the ^ is an exponent is the answer y(y^2-3)
*March 1, 2011 by Cheryl*

**HELPPP!! math**

HELLP!! Can someone help me solve for y in this equation.? -4/5 = (y-2) / (4- (-1))
*June 8, 2011 by Chelsea*

**anatomy**

project please helppp me create a road map/travel guide throught the body starting from the head finishing at your toes.be creative with how you represent cavities. include introduction and superior or cranial or inferior or caudal. and 2 body cavities
*October 5, 2009 by brittany *

**physics**

Which truck has more momentum?? 20kg*m/s or 20000kg*m/s??? HELPPP!!!
*October 8, 2007 by lexi*

**HELPPP!! rate of change**

The points (-1,2) & (4,y) have a slope of -4/5. What is the y coordinate for (4,y).?
*June 8, 2011 by Chelsea*

**mathhhh**

Determine whether each value of x is a solution of the equation 7-3x=5x-17 a. x- -3 b. x-0 c. x-8 d. x-3 Helppp!!!!!
*May 27, 2014 by mathhh HELP!! Help!!! PlEASE!!!!*

**Please Helppp Quickly PHYSICSSSS**

A crow sits on a clothesline midway between two poles as shown. Each end of the rope makes an angle of θ = 28° below the horizontal where it connects to the pole. If the combined weight of the crow and the rope is 11.1 N, what is the tension in the rope?
*February 12, 2012 by Anonymous*

**us government**

what are some of the legal fictions that Tocqueville discussed? HELPPP PLEASEE !!!
*October 3, 2010 by Anonymous*

**helppp pleaseee**

How many days on average can you survive without food or H20?
*May 7, 2012 by cORY*

**Alg**

.Write an algebraic expressoin for4 times the sum of q and p HELPPP PLZZZ :)
*September 9, 2011 by Jessica*

**Physics 10 (helppp please) thannnks **

A sagging floor is jacked up and a steel girder 10 ft long whose cross sectional area is 6in^2 is put underneath. When the jack is removed, a strain gauge shows that the girder has been compressed by 0.0080in. Find the weight the girder is supporting in lbs and tons.
*January 14, 2015 by Charlotte*

**science**

If one mole of the compound Al 4 C 3 has a mass of 144 g and one mole of carbon has a mass of 12 g, calculate the relative atomic mass of the element aluminium. any one helppp please..
*April 20, 2007 by katie*

**Physics**

While an elevator of mass 2681 kg moves upward, the tension in the cable is 29.4 kN. (a) What is the acceleration of the elevator? (b) If at some point in the motion the velocity of the elevator is 1.04 m/s upward, what is the elevator's velocity 3.96 s later? Please helppp ...
*February 8, 2012 by Anonymous*

**biology **

In two to three well-developed paragraphs, explain how the graph below helps support the concern that burning fossil fuels has changed the atmosphere. Describe, in your own words, the change shown in the graph and how this change is occurring in the atmosphere. i cant post a ...
*March 25, 2011 by savanna*

**PHYSICS**

A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees calculate acceleration ...
*February 12, 2012 by Anonymous*

**Physics**

A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees calculate acceleration ...
*February 12, 2012 by Anonymous*

**Physics**

A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees calculate acceleration ...
*February 12, 2012 by Anonymous*

**Physics**

A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees calculate acceleration ...
*February 12, 2012 by Anonymous*

**AP CALCULUS!! HELPPP URGENT**

related rates: the base of a pyramid-shaped tank is a square with sides of length 12 meters, and the vertex pyramid is 13 meters above the base. the tank is filled to a depth of 5 meters, and water is flowing into the tank at the rate of 2 cubic meters er second. find the rate...
*April 15, 2011 by Raven*

**algebra 1 NEED NOW!!! PLEASE HELPPP**

The height of a curved support beam can be modeled by F(x)=- x^2/288 +18 Find the height and width of the beam. Height = units Width = units
*July 1, 2013 by lisa*

**Physics**

Find the speed, v, of a pendulum at the bottom of its swing (B), given that it has mass m and initial height at A is h (the difference in height from B to A). Your answer will be in terms of g as well. Included is a drawing of a pendulum at its maximum height (A), and at its ...
*December 27, 2012 by Dan*

**chemistry, i need helppp like a.s.a.p!!!!**

What is the density of a 23.92 g object block if the dimensions: length = 10.6 mm height = 5.47 cm width = 0.0352 m
*September 24, 2012 by danyae*

**PHYSICSSS please helppp ASAP**

A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. (a) Find the accelerations of the pumpkin and the watermelon. Specify magnitude and direction. magnitude ...
*February 12, 2012 by Anonymous*

**SCIENCE helppp!!**

Our sun is what scientists call a "yellow-green star." Does it emit energy in the frequency of red light? I have no idea!
*January 6, 2010 by Anonymous*

**math.7th gradee.**

the worksheet says to copy and place parentheses to make each statement true. . . but i have NO ideaa what that means..? cann anyone helppp!
*October 5, 2010 by lyssaa.(:*

**PHYSICS**

A tennis ball is thrown horizontally from an elevation of 20.60 m above the ground with a speed of 21.0 m/s vertical m from ground??? f the ball is still in the air, how long before it hits the ground? (If the ball is not in the air, enter 0.)???? If the ball is still in the ...
*January 30, 2012 by Anonymous*

**Helppp**

IF A is the median of {1,2,3...,10}, and B is the median of 1,2,3,4,...11, what is the average (arithmetic mean) of A and B? Express your answer as a decimal? "{}" is no different from B
*December 19, 2014 by factions*

**chemistry (helppp me)**

what is the bond order for BeF2? according to the lewis structure? ....according to MO diagrams its 0. 16 valence e-
*October 29, 2015 by Anonymous*

**Organic Chemistry**

Please Helppp!!!!!! 1)In the test with sodium iodide in acetone and silver nitrate in ethanol, why should 2-bromobutane react faster than 2-chlorobutane? 2) When treated with sodium iodide in acetone, benzyl chloride reacts much faster than 1-chlorobutane, even though both ...
*February 18, 2010 by Ashley*

**science helppp.**

4. Small pieces of rock that enter Earth's atmosphere at speeds of 15 to 70 km/s and burn up are called ____. (1 point) stars meteors meteorites asteroids
*February 11, 2013 by jessie*

**math, Please Helppp!!!!!!!! Lost paper!**

I lost my paper for the Math Riddle Pizazz page 167 about solving systems of equations and I no longer have the problems. (It is the "did you hear about the farmer who fed his cows birdseed.." page) What are the math problems for it?!?
*March 1, 2011 by Caroline*

**math**

Helppp me! Need this in about 10 min. earlier the better!!!! pleaseee:) anyways... neg. 9/10 plus neg. 1/6 =?
*November 5, 2009 by Tay*

**math**

PLEASEEE HELPPP Evaluate exact values, if they exist? if any doesn't exist state so. a) (in randians) sin^-1(-1/√2)
*December 21, 2013 by Bobby*

**Calculus. please helppp!!**

1) Two cars travel in the same direction along a straight road. The figure below shows the velocity, V, of each car at time t. Car B starts 3 hours after car A and car B reaches a maximum velocity of 40 km/hr. a. For approximately how long does each car travel? Car A: ...
*March 13, 2012 by JJ*

**Physics**

PLEASE HELPPP! An ice skater hits a patch of rough ice. The rough patch has a kinetic coefficient of friction with her skates of 0.13. The skater's mass is 51 kg. She passes over the rough patch in 0.55 s. What impulse does the rough patch of ice give her?
*December 7, 2011 by Asia*

**calculus**

Can someone please tell me what the word "WHOLE" AND "IRRATIONAL" MEAN IN CALCULUS? THANKS
*September 2, 2008 by Mike*

**algebra 8..helppp**

Educantion..Benjamin must have 120 credit hours of instruction to receive his college degree.Benjamin wants to graduate in 8 semesters without ettending summer sessions.How many credit hours must Benjamin take on average each semester to graduate in 8 semester? i don"t know ...
*September 1, 2010 by chayanee*

**maths HELPPP**

Y= AX + B Write a program for the calculator which: • Generates and displays suitable integer values of A and B: • Requests the student to input the coefficient of Y and the constant term in the re arranged formula; • Checks the students answers; • Outputs a relevant comment ...
*June 7, 2007 by kat*

**PHYSICS**

A dolphin wants to swim directly back to its home bay, which is 0.85 km due west. It can swim at a speed of 4.35 m/s relative to the water, but a uniform water current flows with speed 2.82 m/s in the southeast direction. (a) What direction should the dolphin head??? (b) How ...
*January 30, 2012 by Anonymous*

**Physics**

A fireworks rocket is moving at a speed of 48.4 m/s. The rocket suddenly breaks into two pieces of equal mass, which fly off with velocities v1 and v2, as shown in the drawing. What is the magnitude of (a) v1 and (b) v2? In the image the two pieces are going off in a right ...
*October 5, 2013 by Cheech*

**statistic math**

the local weatherman has been accurate (successful) in his forecast 80% of the time. find probability that he is accurate exactly 3 of the next 5 days. helppp
*December 10, 2014 by Anonymous*

**calculus**

hello here, Please can i get direction on website to practice calculus (both differential & integral) objectives based online. thanks.
*August 19, 2009 by matrix school 2*

**helppppp math helppp!**

the fernrod motorcycle company invested 250,000 at 4.5% compounded monthly to be used for the expansion of their manufacturing facilities. how much money will be aviable for the project 3.5 years?
*June 1, 2014 by math HELP!! please*

**physics**

So in physical science i'm learning about vectors using the pythagoream theorem, and when i get what c equal i wanted to know if i round to the next highest number, put it is a decimal, or do nothing at all. Helppp pleaeee[:
*September 23, 2009 by Lucelys*

**Calculus Please Need Urgent3 :/**

Find the derivative of the following function using the appropriate form of the Fundamental Theorem of Calculus. F(x)= (s^2)/(1+3s^4)ds from sqrtx to 1 F'(x)=? Thank you so much guys!
*April 19, 2014 by Jay*

**HELPPP ASAPPP**

An archeitect is designing a rectangular fountain for the city park. It's area is represented by 16x-40. Factor this binomial to determine the greatest lengh and width measurements that fountain could have?
*March 6, 2014 by kamleen*

**HELPPP**

Solve the linear programming problem by the method of corners. Minimize C = 5x + y subject to x + 3y ≥ 43 x + y ≥ 27 x ≥ 0, y ≥ 0
*April 18, 2011 by Leah*

**physics**

A 200g Nerf dart is shot from a dart gun with a kenetic energy of 3.60J. What was the initial speed of the dart? >>> change g into kg Formula(i think) is: Ek=1/2 mv2 Helppp?
*April 29, 2008 by chyanne*

**Everybody hw help who go facebook**

I dont use facbook.but hw essay topic what should people do to get rid out of facebook? What should they do if they r addicted to it? Ples helppp
*May 1, 2013 by Nisha*

**social studies **

confucianism lost influence because__________ the sui and early tang dynasties . people wanted a more _________ escape that promised _________ from _________ (plz helppp)
*February 14, 2013 by Anonymous*

**Physics helppp**

A 67.0 kg skateboarder wants to just make it to the upper edge of a "quarter pipe", a track that is one-quarter of a circle with a radius of 2.55 m. What speed (in m/s) does he need at the bottom assuming that the local acceleration due to gravity is 9.80 m/s2?
*November 2, 2011 by Me*

**Calculus AB (AP)**

Hi, I have a calculus test tomorrow and I understand how to complete all of the problems, but I am unsure behind the reasoning of taking two derivatives. Can someone please explain the following: 1. g(x)=e^(f(x)) g'(x)=e^(f(x))f'(x) 2. f(x)=Integral from 0 to 3x of the square ...
*April 13, 2011 by Jake*

**Phsyicssss PLease helppp ASAP**

A helicopter is lifting two crates simultaneously. One crate with a mass of 151 kg is attached to the helicopter by cable A. The second crate with a mass of 79 kg is hanging below the first crate and attached to the first crate by cable B. As the helicopter accelerates upward ...
*February 12, 2012 by Anonymous*

**Calculus**

I need help with these two review calculus problems for my final exam. What is the derivative of a). (5x^2+9x-7)^5 b). Lne^x^3 For a. I got 50x+45(5x^5+9x-7)^4 For b. I got 3x^2 Can you verify please?
*May 21, 2012 by Sam*

**Calculus: Derivatives**

I'm having trouble understanding what derivatives in calculus (instantaneous speed) is. Can someone please explain it to me, or provide some easy links to learn from? Thanks!
*September 9, 2007 by Joe*

**PHYSICS helppp!!!**

A conductor consists of a circular loop of radius R and two straight, long sections The wire lies in the plane of the paper and carries a current I. Find an expression for the vector magnetic field at the center of the loop
*November 10, 2013 by ANITA*

**Pre-Calc Helppp!!!**

Find the indicated angle è. (Use either the Law of Sines or the Law of Cosines, as appropriate. Assume a = 110 and c = 136 (angle B=38) Round your answer to two decimal places.)
*April 5, 2012 by Mike*

**Physics- HELPPP**

A combination of 0.383 kg of water at 22.8◦C, 0.499 kg of aluminum at 61.3◦C, and 0.408 kg of copper at 68.3◦C is mixed in an insulated container and allowed to come to thermal equilibrium. Determine the final temperature of the mix- ture.
*December 11, 2011 by Ivana*

**MATH-PLEASE HELPPP!!!!**

A company makes three products X, Y and Z. Each product requires processing by three machines A, B and C. The time required to produce one unit of each product is shown below. Product X:- Machine A: 1 Machine B: 2 Machine C: 2 Product Y: Machine A:2 Machine B: 2 Machine C: 2 ...
*July 11, 2011 by kIM*

**science**

2H2(g) + O2(g) = 2H2O (l) Calculate the volume of Hydrogen gas at STP required to produce an amount of energy equivalent to that produced by the combustion of a gallon of octane. The density of octane is 2.66 kg/gal, and its standard enthalpy of formation is -249.9 kJ/mol. ...
*December 15, 2010 by alex*

**HELPPP**

I printed out a summer activite to test my skill on science and i found some that i stumbled upon and couldnt figuire out so help? If im wrong then please correct me. 2.A 3.B 4.B 5.A 6.B 2.Giraffes have long necks that allow them to eat leaves in trees. What is this an example...
*August 5, 2014 by Matt*

**MATH-PLEASE HELPPP!!!!**

The table below shows the number of hours required in each of two departments to make one unit of various products A, B and C. For example, product B requires 1 hour of time in department I and 3 hours in department II. HOURS REQUIRED PER UNIT OF PRODUCT DEPARTMENT 1 A=1 B=1 C...
*July 11, 2011 by kIM*

**Physics HELPPP PLEASEEE**

A 0.60 kg sphere rotates around a vertical shaft supported by two strings, as shown. If the tension in the upper string is 18 N. Calculate the tension in the lower string? the rotation rate (in rev/min) of the system?
*May 19, 2013 by Joeline*

**Algebra 1 HELPPP!**

simplify √10/49 + √5/2 + √2/5
*April 18, 2010 by Skye*

**chemistry**

A diamond is a natural form of pure carbon. How many atoms of carbon are in a 1.00 carat diamond. (1.00 carat= 0.200 grams) Helppp pleasee!
*July 29, 2008 by jecce.*

**chem**

the pH of a .100 M solution of sodium formate = 8.37. Calculate the value of Ka of formic acid. okay so I know that the anion of a weak acid is itself a weak base so A- +H2O---> OH- + HA pOH =14-8.37 so conc of OH is 10^-5.63 Ka=[OH][HA]/[A-] so we know the conc of OH and A...
*May 13, 2009 by Natash*

**PHYSICS**

Sheena can row a boat at 2.91 mi/h in still water. She needs to cross a river that is 1.24 mi wide with a current flowing at 1.54 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head 60.0° upstream. (a) What is her speed with respect ...
*January 30, 2012 by Anonymous*

**health and social**

helppp .. what does health and social acttually meann ??
*October 12, 2008 by Dannie*

**Helppp**

Mom in need of help! The x-intercept of a line is -5 and the y-intercept of the line is -2. What is the equation of the line? A) y=-5/2x-5 B) y=2/5x+2 C) y=5/2x-2 D) y=-2/5x-2 Thanks so much
*October 14, 2013 by Kandy*

**Maths Calculus Derivative Integral - Urgent Please**

Use 2nd Fundamental Theorem of Calculus to find derivative of f(x) = integral of 2x^2 (at the top) to x-5 (at the bottom) of square root of Sin(x)dx
*October 18, 2010 by Nick*

**Calculus please help**

f(x)=(x^2+2x+3)^4, find f'(x). what rule do we use and can some please show me the steps
*April 29, 2008 by John*

**Calculus**

Find the derivative of (sin(^3)x)(tan x) Please explain to me in steps please , thank you
*April 19, 2010 by Christine*

**physics**

An animal-rescue plane flying due east at 36.0 m/s drops a bale of hay from an altitude of h = 69.5 m. If the bale of hay weighs F = 176 N, what is the momentum of the bale the moment before it strikes the ground? Give both magnitude and direction. helppp!!
*November 29, 2007 by christopher*

**Calculus (please help)**

Evaluate the indefinite integral: INT dx/(64+x^2)^2 Please help with this one.
*September 20, 2011 by Carmen*

**calculus--please help!!**

Find the functions f&g so that fog =H H(x)=(3x+2)^6 please show work
*January 8, 2013 by anonymous*

**Gr 12 math**

I need to calculate the volume of a parallelepiped using the scalar triple product. I can do this if i have vectors. however instead we've been given 8 points which mark the corners. HELPPP this is the question: Calculate the volume of the parallelepiped with vertices at: (9,4...
*September 6, 2008 by Teniel*

**Calculus help me please!**

Find the value of k so that f(x)= {3x^2+kx+4 if x<0 and 2sqrt(x+4) if x >or equal to 0} is differentiable at x=0 can someone please provide help!!!
*November 27, 2011 by kali mata*

**calculus please help**

lim y→−1 (sqrt(y^2+8)-3)/y+3 find limit if it exists please help
*December 2, 2012 by dt*