Monday

May 30, 2016
Number of results: 67,250

**applied calculus**

3. a) Write out the limit definition for the derivative of y = xx. Attempt to solve it. b) Write out the limit definition for the derivative of the inverse trig function from question 2. Attempt to solve it. c) Discuss the value of implicit differentiation. (Use questions 1 ...
*April 9, 2013 by jack*

**Calculus**

The total stopping distance T of a vehicle is T=2.5x+0.5x^2 where T is in feet and x is the speed in miles per hour. Approximate the change and percent change in total stopping distance as sped changes from x=25 to x=26 miles per hour. I started taking the derivative, but that...
*December 17, 2013 by Lindsay*

**Calculus**

for f(x)=-x^2 +1, which value is the largest magnitude? a) average rate of change from x=-1 to x=1 b) instanteneuous rate of change at x=3 c) instanteneous rate of change at x=0 average rate of change from x=-4 to x=0
*July 4, 2012 by g*

**Applied Calculus**

If the line passing through the points (a, 1) and (−8, 7 is parallel to the line passing through the points (−11, 8) and (a + 2, 1), what is the value of a?
*February 25, 2013 by Jacob*

**URGENT Needs Physics Help**

Ok, so I am doing this paper on the physics mistakes in Willy Wonka and the Chocolate factory. To prove that the everlasting gobstopper defies the laws of physics, I wanted to use Zeno's paradoxes to do so. But are his paradoxes correct? There are theories online that say they...
*December 16, 2007 by Desperate*

**Urgent Needs Physics Help**

Ok, so I am doing this paper on the physics mistakes in Willy Wonka and the Chocolate factory. To prove that the everlasting gobstopper defies the laws of physics, I wanted to use Zeno's paradoxes to do so. But are his paradoxes correct? There are theories online that say they...
*December 16, 2007 by Desperate--REPOST*

**VOCAB**

IF I AM WRITING LETTERS TO GOD, BOY SCOUTS, US ARMY, MY LOCAL SWIMMING POOL. NOT MAILING OR EXPECTING RESPONSES, RATHER USING THE LETTERS TO TELL A STORY. IS IT CORRECT TO SAY I AM WRITING LETTERS TO VAEIOUS ENTITIES? IF NOT, WHAT WORD COULD BE USED?
*October 30, 2010 by PETE*

**RADICAL EQUATIONS**

PLEASE HELP! I have the steps down and an answer..just need the correct one. 6/8 = 8/y - 1/2 The LCM here is 8y, so I multiply on both sides by 8y. 8y times 6/8 = 8y times 8/y - 8y times 1/2. After canceling out, I have 6y = 64 - 4y. Combine like terms. 2y = 64; y = 32? Thank ...
*January 27, 2011 by AMY*

**English**

Suppose I want to write a sentence: Why not a girl or woman? Because they are too emotional. Is this a grammatically correct way to write it. The part "Because I have to study" is not a complete sentence so am i supposed to add a hyphen??? I totally made this sentence up just ...
*February 5, 2011 by Bubba*

**English**

A good scientist must have a keen mind an unqhenchable curiousity and a (groundless disinterested) desire to discover the truth disinterested? Ms.Sue you told me it should be maximum but groundless and disinterested are the only options. So is my answer still correct?
*September 18, 2012 by Jerald*

**chemistry**

A 0.0583 mol sample of formaldehyde vapour, CH2O, was placed in a heated 0.359 L vessel and some of it decomposed. The reaction is CH2O(g)---> H2(g) + CO(g). At equilibrium, the CH2O concentration was 0.0449 M. What is the value of Kc for this reaction? my answer was 0....
*April 20, 2013 by alex*

**math check**

Consider the following table and use the formulas that are given for computing the correlation coefficient. (Give your answer correct to two decimal places.) x 1 1 0 0 0 y 7 3 5 6 6 r = n xy − x y n x2 − x 2 n y2 − y 2 (1) r = SS(xy) SS(x) · SS(y) (2) This is...
*June 18, 2013 by Tom 12*

**History #2**

Please help... I think its A,D, and C Which are acceptable reasons for studying history? Choose all answers that are correct. A. It helps blur national identities. B. It helps us be more creative. C.It helps support common cultural understanding. D.It improves our judgment.
*August 11, 2014 by Matt*

**Chemistry**

Caluculate the mass of ferrous ammonium sulfate (Fe(NH4)2(SO4)2.6H2O) you would need to add to a 4.0 mL volumetric flask to make a solution that is 75 ppm. I've already identified that Fe is 14.24% of the Mohr's salt, but how would the conversion of that go to ppm? Ppm is mg/L...
*October 1, 2015 by Ronnie*

**English**

Which of the following do Petrarchan and Shakespearean sonnets have in common? A. rhyme scheme B. length C. question and answer format D. Both are organized as an octet and a sestet I Chose Answer B. length. I wanted someone to check my answer to see if it was correct. Thank you.
*February 15, 2016 by Justine*

**Math**

The probability that a washing machine will operate satisfactorily for 3 years is 0.82 while the probability that a floor polisher will operate satisfactorily over the same period of time is 0.78. Find the probability that in a 3-year period, only the floor polisher will ...
*October 15, 2015 by Jen*

**Calculus again**

Find the equation of the tangent to y=2-xe^x at the point where x=0 So I found the first derivative by doing the sum rule and product rule. I got e^(x)(x-1) Then I found the slope by substituting 0 for x and got -1. Then I found y by substituting 0 into the original equation ...
*June 5, 2008 by Sam*

**Calculus**

A street light is hung 18 ft. above street level. A 6-foot tall man standing directly under the light walks away at a rate of 3 ft/sec. How fast is the tip of the man's shadow moving? I know I would've to set up a proportion. 18 / 6 = x + y / y x = distance of man from light y...
*February 6, 2011 by Katie*

**Statistics**

The following is a histogram (right skewed) of the first ten terms of a geometric distribution with p = .4. The mean of this distribution is 2.5 and the standard deviation is approximately 1.93. What's the shape of the distribution of sample means for simple random samples of ...
*February 18, 2016 by Jim*

**Math**

Sorry! I don't get this one either.. limit of (f(x+Δx)-f(x)) / Δ x with Δ x -> 0 f(x)= 1/(x+3) My work so far before I got stuck... 1/((x+Δx)+3) = 1/(x+Δx+3) - 1/x+3 = 1(x+3)/(x+Δx+3)(x+3) - 1(x+Δx+3)/(x+3)(x+Δx+3) =Δx / (x+Δ...
*August 16, 2014 by Darly*

**math**

How many tokens of “the“ did Adam produce at stage 1?______22_______ How many tokens, in general, did Adam produce at stage 1? _7437__________ What percentage of Adam's tokens did “the“ make up at stage 1? Hi, i figured out how to calculate the first two questions but im not ...
*March 4, 2012 by michelle*

**Algebra 1**

The amount a spring will stretch S is proportional to the force (or weight) F attached to the spring . If a spring stretches 8.9 inches when 20 pounds are attached how far will it stretch when 70 pounds are attached? A:3.54 inches B:2.54 inches C:31.15 inches D:30.15 inches ...
*November 9, 2013 by Macy *

**Calculus**

f(x)=x*sqrt(x^2+2x+10) + 1*sqrt(x^2+2x+10 defined at the interval [-7,5]. A. f(x) is concave down on the region _,_. B. f(x) is concave up on the region _,_. C. The inflection point for this function is at ____? D. The minimum for this function occurs at ___? E. The max for ...
*June 18, 2009 by Z32*

**Calculus**

If a figure shows a function g(x) and its tangent line at the point B=(2,6.8). If the point A on the tangent line is (1.94,6.87), fill in the blanks below to complete the statements about the function g at the point B. g(___) = ______ g(___) = ______
*February 14, 2011 by Cecille*

**Calculus**

If a figure shows a function g(x) and its tangent line at the point B=(2,6.8). If the point A on the tangent line is (1.94,6.87), fill in the blanks below to complete the statements about the function g at the point B. g(___) = ______ g(___) = ______
*February 14, 2011 by Cecille*

**calculus**

A growing boy who is 4 feet tall stands 8 feet from a 12 foot lamp post. The boy is growing at the rate of 3/4 inches per year. How fast is his shadow growing (in inches per year)?
*November 25, 2011 by josh*

**Calculus**

An object has a constant acceleration of 72 feet per second squared, an initial velocity of 17 feet per second, and an initial position of 10 feet. Find the position function describing the motion of this object.
*February 9, 2015 by Anonymous*

**Calculus**

1 pt) For positive constants k and g, the velocity, v, of a particle of mass m at time t is given by v=mg/k(1−e−kt/m). At what rate is the velocity is changing at time 0? At t=8? What do your answers tell you about the motion? At what rate is the velocity changing ...
*April 1, 2015 by Jen*

**Calculus**

Four red balls and two white balls are placed in a jar. One ball is randomly removed and replaced with a ball of the other color. The jar is then shaken, and one ball is randomly selected. What is the probability that this ball is red? Express your answer as a common fraction.
*October 1, 2007 by Matt*

**Calculus**

According to the US Census, the world population P, in billions, is approximately P=6.342e^(0.011t); where t is in years since January 1, 2004. At what rate was the world's population increasing on January 1, 2005? Give your answer in millions per year. Is the answer 6412 ...
*November 5, 2008 by George*

**Calculus**

Integrals: When we solve for area under a curve, we must consider when the curve is under the axis. We would have to split the integral using the zeros that intersect with the axis. Would this be for all integrals? What if we just want to "find the integral", without finding ...
*December 18, 2009 by Jennifer*

**Calculus**

Answer the following questions for the function f(x) = sin^2(x/3) defined on the interval [ -9.424778, 2.356194]. Rememer that you can enter pi for \pi as part of your answer. a.) f(x) is concave down on the interval . b.) A global minimum for this function occurs at . c.) A ...
*November 2, 2011 by Anonymous*

**calculus**

5. A particle moves along the x-axis in such a way that its position at time t is given by x=3t^4-16t^3+24t^2 for -5 ≤ t ≤ 5. a. Determine the velocity and acceleration of the particle at time t. b. At what values of t is the particle at rest? c. At what values of ...
*December 5, 2011 by fareha*

**calculus ab**

The velocity of a particle tralling along the x-axis is given by v(t)=(e^-t)(sin(t)). Find the following a. Compute the net change in distance from time t=1 to time t=3 (this is equivalent to s(3)-s(1) b. compute the total distance traveeled from time t=0 to time t=6pi c. Find...
*January 8, 2012 by Jake*

**Calculus II**

A 24 foot ladder is leaning against a building. Let x be the distance between the bottom of the ladder abd the building and let theta be the angle between the ladder and the ground. Suppose the bottom of the ladder is sliding away from the wall at a rate of 2 ft/sec. When x=6...
*March 18, 2012 by Lynn*

**Calculus**

A farmer wants to build a rectangular pen and then divide it with two interior fences. The total area is to be 2484ft^2. The exterior fence costs $18.00 per foot and the interior fence costs $16.50 per foot. Find the dimensions of the pen that will minimize the cost. What is ...
*July 15, 2012 by Catie *

**Calculus**

A rancher wants to build a rectangular pen with an area of 150 m2. Let W be the width of the pen and L be the length of the pen. a. Find an equation for the perimeter P in terms of W and L . b. Use the given area to write an equation that relates W and L . c. Find the pen ...
*May 26, 2013 by Lily*

**vocab**

Directions: Use the underlined etymology clues to help you choose the correct word that is missing from each of the following sentences. 3. The [underlined](Middle English, from Old French boc, "male goat")[/underlined] had a physically demanding job. A. son B. barber C. ...
*April 25, 2011 by Brad*

**Language **

Choose the meaning the best matches the word in italics. The president of the large company felt as if he had reached the PINNACLE of his career. A. Lower point B. Point or towering formation C. Hughes point of achievement •• D. Rise toward success or fame Correct me if I'm ...
*January 19, 2016 by Tayler*

**Math**

Which set of factors of the number 420 has the least possible sum? Which set of factors of the. Number 420 has the greatest possible sum? Be sure that the two sets of factors both have a product of 420
*December 17, 2013 by Kristen*

**Physics please check**

The "karat" is a dimensionless unit that is used to indicate the proportion of gold in a gold-containing alloy. An alloy that is one karat gold contains a weight of pure gold that is one part in twenty-four. What is the volume of gold in a 20.0 karat gold necklace whose weight...
*April 9, 2007 by Mary*

**DARN GEOGRAPHY AGAIN**

What direction does a boat go when moving along the Panama Canal from the Caribbean Sea to the Pacific Ocean? I think it's southwest but not sure. Nope. I wonder if you ever are looking at maps on these questions. See the map here: http://en.wikipedia.org/wiki/Panama_Canal ...
*October 12, 2006 by Suzanne*

**chemistry**

Hi ! Could you please help me to see through this problem. *I know it's asking me to find the hydrogen ion concentration in a bleach sample. *If the pH meter reads 9.55..this suggest to me this is a base. Maybe,I can use the equation: pOH = -log (OH^-) = -log (9.55) = 0.980. ...
*December 12, 2010 by Cliff*

**American Government**

Explain who the Federalists and Anti-Federalists were, then compare and contrast their views on the following issues: human nature, the proper scale of government, the nature of representation, separation of powers/checks and balances, the purpose of government, and stability ...
*July 18, 2013 by Anonymous*

**HELP**

i keep getting this error when I type my assignment in, You are not allowed to post internet addresses. If you own a website and would like Jiskha to link to it, please contact us. but there is no internet address. AH! Look for a www in your text. there isn't three w's :( ...
*May 10, 2007 by sarah*

**Math**

How do I express these in scientific notation AND Log10 form? 1) ln(8.1) 2) 32.8 x 10^-2 + 3.15 x 10^-1 3) 10^-2 x 10^4.5 4) 10^-45 5) 8^2.34 I will be happy to critique your work here. Most of these require conversion. Do the math, and let your calculator do the log10 form. ...
*January 21, 2007 by Carl*

**5th Grade math**

What is a partial-products algorithm. For example 87*65=? How do you do it and show your work? Here is how Chicago Math does it: 87 x65 multiply 80 x 60.....4800 multiply 7 x 60..... 420 multiply 5 x 80.......400 multlply 5 x 7 ........35 add the products.
*April 18, 2007 by Nick*

**Algebra**

Write the equation of the line passing through the given point with the indicated slope. Give your results in slope-intercept form. Point: (0,5) Slope: m=-3/5 Show equation I will be happy to critique your work on this.
*May 20, 2007 by Linda*

**Physics**

The artificial sweetener NutraSweet is a chemical called aspartame (C14H18N2O5). (a) What is its molecular mass (in atomic mass units)? u (b) What is the mass (in kg) of an aspartame molecule? kg I know I have to get the totally mass of the aspartame, but I'm unsure how to ...
*April 19, 2008 by Ron*

**science**

Napolweon pencil has a mass of 3 grams (0.27Napoleon ) when he lifts his pencil from the desk to his paper he moves it an average of 20cm (o.20m) He then returns it to his desk moving it another 20cm How much work did he do on his pencil? w=FXD
*October 24, 2009 by Barbara *

**science**

Napolweon pencil has a mass of 3 grams (0.27Napoleon ) when he lifts his pencil from the desk to his paper he moves it an average of 20cm (o.20m) He then returns it to his desk moving it another 20cm How much work did he do on his pencil? w=FXD
*October 24, 2009 by Barbara *

**Algebra 2**

From a 52-card deck a card is drawn and then replaced. After the deck is shuffled, a second card is drawn. Find the probability of each event. a) both cards are clubs. PLEASE SHOW ALL WORK!
*December 9, 2009 by Trisan*

**physics**

a person carries a 58kg package of books up a flight of stairs the length along the stairs is 24 meters the vertical height of the stairs is 12 meters how much work is done in raising the package I know the answer is 6800 J but how to get????
*January 6, 2010 by dani*

**math**

The base of a triangle is 10 cm longer than the height. Determine the height of the triangle if its area is 48 cm^2. -I just plugged in number and got 6cm for the height and 16cm for the base. But I need to show work and I cant remember how to solve this.
*February 3, 2010 by Kaylee*

**Math**

Sue, got a raise at work her current wage was $32.500 a year her new wage is 35.500 a differents of $3.000 per year how do I come up with her hourly wage she is paid is every 26 weeks?
*February 13, 2010 by Cathy*

**Math**

Earn al least $150 a week. $10 per hour working for a farmer. $5 per hour babysitting. can work at most 25 hours per week. Write and graph a system of linear inequalities.
*March 1, 2011 by Mary*

**Physics**

Sau-Lan has a mass of 47 kg. She rides the up escalator at Ocean Park in Hong Kong. This is the world's longest escalator, with a length of 227 m and an average inclination of 31°. How much work does the escalator do on Sau-Lan?
*November 6, 2011 by Iklishi*

**11**

How do I work this problem? Flying with the wind, an airplane can travel 1080 miles in six hours, but against the wind, it goes 360 miles in half the time. Find the air speed and wind speed
*December 5, 2011 by Judy*

**Physics**

In starting an exercise, a 1.60-m tall person lifts a 2.10 kg book from the the ground so it is 2.20m above the ground. What is the potential energy of the book relative to (a) the ground,and(b) the top of the persons head? (c) What is the work done by the person in part(a)?
*December 7, 2011 by Amanda and Leah*

**math **

a 5ft pole is situated on top of a building. a 25ft pole extends from the top of the pole to a point on the ground creating a 26 degree angle. find the height of the building. please help me work this problem
*January 5, 2012 by moniqui*

**math**

Iris is cutting fleece to make scarves for her friends. She has ten and one-half feet of fleece to make 3 scarves. How long can she make each scarf? Show your work, and include cancellation in your steps
*May 9, 2012 by cha*

**Observing development of the young child**

A collection of a child,s classroom work that's assembled by teachers, parents, and the child him self is a called a A, learning life B, collaborative portfolio C, development checklist D, gallery collection
*August 27, 2012 by Olivia*

**algebra**

HELP! Please Calvin invested $7500 for one year, part 12% annual interest and the rest at 10% annual interest. His total interest for the year was $890. How much money did he invest at 12%? Show work.
*September 7, 2012 by Briana*

**chemistry**

2. When 0.354 g of an unknown nonelectrolyte compound was dissolved in 12.5 g of benzene a solution was formed that froze at 4.46°C. (a) Calculate the molar mass of the unknown compound. The freezing point of benzene is 5.48°C, and the Kf of benzene is 5.12 °C/Molal. Show your...
*November 14, 2012 by Helen*

**chemistry**

2. When 0.354 g of an unknown nonelectrolyte compound was dissolved in 12.5 g of benzene a solution was formed that froze at 4.46°C. (a) Calculate the molar mass of the unknown compound. The freezing point of benzene is 5.48°C, and the Kf of benzene is 5.12 °C/Molal. Show your...
*November 15, 2012 by Helen*

**Math Algebra**

The length of the hypotenuse of a right triangle is 30 m. The length of one leg is 20 cm. Find the length of the other leg. Round your answer to the nearest tenth I know how to do hypotenuse but this doesn't seem to work out...help please
*December 16, 2012 by Deborah*

**math**

it takes 7 men 10 days to build a garage.Halfway through building the garage they get some help from 3 people and continue to work at the same rate a)How long will it take to finish of the garage b)How long did it take
*April 5, 2013 by Anonymous*

**physics**

A heat engine absorbs 848 J of energy per cycle from a high-temperature source. The engine does 417 J of work during each cycle, expelling 431 J as heat. What is the engine’s eﬃciency?
*April 25, 2013 by Anonymous*

**heat transfer**

how microwave ovens work,and explain how they cook much faster than conventional ovens.Discuss whether conventional electric or microwave ovens consume more electricity for the same task.
*March 8, 2015 by akalili*

**maths**

marc is looking at the plans for his new garage. the length of the garage is 8 metres. the scale of the drawing is 1:50 what will the length of the garage be on the drawing? which would be the most simplistic form for me to work this out, i really struggle ??
*October 10, 2015 by josh*

**math**

The base of a rectangular prism has a length of 13 inches and a width of 1/2 inch. The volume of the prism is less than 65 cubic inches. Find all possible heights of the prism. Show all your work as an inequality. THANK YOU!!
*November 8, 2015 by kimie*

**science**

calculate numerical value of current in inductor resistant circuit. l=1mH r=3k (ist=1ma at t=0) i1(t=1us)in ma. i0=1ma my work. i=i0(1-e^-(t/T)) 1*10^-3(1-e^(-1/0.33) i=0.952ma this is wrong do I need to add initial current to this(1ma). why is this wrong??
*February 4, 2016 by bearinthewoods*

**physics**

calculate numerical value of current in inductor resistant circuit. l=1mH r=3k (ist=1ma at t=0) i1(t=1us)in ma. i0=1ma my work. i=i0(1-e^-(t/T)) 1*10^-3(1-e^(-1/0.33) i=0.952ma this is wrong do I need to add initial current to this(1ma). why is this wrong??
*February 6, 2016 by bearinthewoods*

**Calculus**

Any help would be much appreciated with the steps involved in each problem given. Thank you. 1) Find derivative if y =cot x + sin x 2) Find derivative if y = (3x+5)^8 3) Find derivative if y = x csc x 4) Find derivative if y = x /3x + 1 (3x + 1 is under a square root(/) 5) ( f...
*September 30, 2007 by Matt*

**12th Calculus**

1. Explain why the function f(x)=(x^2-4)/(x-2) is not continous on [0,3]. what kind of discontinuity occurs? 2. use areas to show that integral sign with the upper limit of 3 and a lower limit of 0 (x^2-4/x-2)dx=10.5 3. use the area to show that intergral sign with the upper ...
*December 10, 2008 by may*

**Calculus**

Consider the function below. f(x) = [1-(4/x)]^x (a) Use a graph to estimate the value of the limit of f(x) as x approaches infinity. (Round the answer to two decimal places.) (b) Use a table of values of f(x) to estimate the limit. (Round the answer to four decimal places.)
*September 30, 2009 by Sahar*

**Calculus**

A 25 foot ladder is leaning on a 9 foot fence. The base of the ladder is being pulled away from the fence at the rate of 10 feet/minute. How fast is the top of the ladder approaching the ground when the base is 9 from the fence? [Note: The ladder is protruding over the top of ...
*October 13, 2009 by Z32*

**Calculus**

A 17 foot ladder is leaning on a 6 foot fence. The base of the ladder is being pulled away from the fence at the rate of 5 feet/minute. How fast is the top of the ladder approaching the ground when the base is 6 from the fence? [Note: The ladder is protruding over the top of ...
*March 15, 2011 by Anonymous*

**Calculus**

The altitude (in feet) attained by a model rocket t seconds into flight is given by the function h(t) = -1/3t^3 + 4t^2 + 20t + 2,for t _> 2 a)Find the maximum altitude attained by the rocket. b)Why does it not make sense to use this function after t = 16 seconds? Use the ...
*April 2, 2013 by Deeno*

**Calculus Practice Problems**

A boat is pulled into a dock by a rope attached to the bow (front end) of the boat and passing through a pulley on the dock that is 4 m higher than the bow of the boat. If the rope is pulled in at a rate of 3 m/s, at what speed is the boat approaching the dock when it is 8 m ...
*October 16, 2013 by Kelly*

**calculus**

A cable runs along the wall from C to P at a cost of $3 per meter, and straight from P to M at a cost of $5 per meter. If M is 16 meters from the nearest point A on the wall where P lies, and A is 50 mters from C, find the distance from C to P such that the cost of installing ...
*October 18, 2014 by RAJ*

**calculus**

Suppose the volume, V , of a spherical tumour with a radius of r = 2 cm uniformly grows at a rate of dV/dt= 0.3 cm^3/day where t is the time in days. At what rate is the surface area of the tumour increasing? The volume of a sphere is given by V =4 3πr^3and the surface ...
*November 1, 2014 by Quratulann*

**Math**

A drawer contains 22 black socks, 22 white socks, 22 blue socks, and 22 brown socks. If the light is off and Matt reaches into the drawer to get his socks, what is the minimum number of socks he must pull out in order to be sure that he has a matching pair? He must pull out a ...
*September 5, 2011 by Bianca*

**math 156**

The ratio of staff to patients at Lakeview is 8 to 7. If the total staff plus patients is 1575 people, how many staff are at Lakeview? I do not know how to work with ratios, can anyone help?
*December 9, 2009 by Rmz*

**algebra**

solve the following equation by clearing fractions show all work want to know if this right -7/3-5/2x=8+2x 6(-2/3)-(5/2x)(6)=6(8)+2x(6) 14x-15=48+12x 14x-12x-15=48+14x-14x 2x-15=48 2x-15+15=48+14x-14x 2x-15=48 2x-15+15=48+15 2x=-33 2x/2x=-33/2 x=-33/2
*September 6, 2011 by babygirl*

**Math**

Classify triangle ABC by its sides if side AB = 6x, side AC = 4x + 6 and side BC = 8x + 3. The perimeter of triangle ABC is 63. Show all your work. Explain your reasoning.
*November 8, 2011 by Chris*

**Chemistry**

The density of gold is 19.3 g/cm^3. You inherit a gold bar that measures 7.0 inches by 3.0 inches by 2.0 inches. How many ounces does the bar weigh? Show all work.
*January 5, 2012 by 2daycr8*

**Algebra**

The height of the flagpole is three fourths the height of the school. The difference in their heights is 4.5 m. What's the height of the school? Choices for school's height: 18, 20, 24. Please show work
*August 23, 2012 by Anonymous*

**Algebra**

The height of the flagpole is three fourths of the height of the school. The difference in their heights is 4.5 m. What's the height of the school? Choices for school's height: 18, 20, 24. Please show work
*August 23, 2012 by Anonymous*

**math**

Juan's father is 4 times as old as Juan.Twenty-two years from now he will be twice as old as Juan.What are their ages now? My work- 4(F)=J 22(2)=J
*February 6, 2016 by Gigi*

**Trig**

Given sin= -√5/6 with π < u < 3π/2 and cos v= √3/5 with 0 < v < π/2 find sin(u-v) and tan(u+v). Please show work and simplify.
*March 8, 2016 by Jane*

**Cross-Cultural Art Project**

http://www.google.com/search?source=ig&hl=en&q=Jhonen+Vasquez Have fun. =) Hi everyone, My art class is studying artwork from around the world, and as part of our midterm projects we have to research a particular artist who represents one of the cultures we have studied. Each ...
*February 26, 2007 by Writeacher*

**calculus**

find max, min and saddle points of the give function f(x,y)=sin(x)+sin(y)+sin(x+y) 0<=x<=pi/4 0<=y<=pi/4 i have that dz/dx=cos(x)+cos(x+y) dz/dy=cos(y)+cos(x+y) and i set them equal to zero but im kinda confused on how to really solve that. i mean i got an answer ...
*March 9, 2012 by Help Please*

**Calculus **

You are creating a rectangular garden and want to surround it with brick edging. You also are going to divide it into two halves with the edging so that your vegetables and herbs are on one side and flowers are on the other. You only have 120 ft worth of brick edging and want ...
*September 11, 2013 by Marco*

**CALCULUS ECONOMICS**

Consider the same setting as in the previous question. Suppose that firms are NOT owned by consumers. Let s denote the size of the per-unit subsidy/tax given to the firms. Let positive values of s denote subsidies, and negative values of s denote taxes. QUESTION: What is the ...
*March 13, 2014 by Jenney*

**Calculus Help **

Farmer Brown wants to fence in a rectangular plot in a large field, using a straight rock wall that is already there as the north boundary. The fencing for the east and west sides of the plot will cost $3 a yard, but she needs to use special fencing, which will minimize the ...
*April 24, 2014 by Chris*

**English**

Thank you very much for your last corrections. Can you please tell me if the following sentences are possible? 1) She is wearing a zip-up tracksuit top with a hood or a hooded zip-up top? 2) Is this adjective order correct: opinion, size, shape, color, pattern, fabric and ...
*April 21, 2010 by Franco*

**health information**

Paula Patient doesn't want her violent boyfriend to know that she's getting an abortion, so she asks Dr. Bob to send all commmunications to her to a post office box and to phone her only at work. What should Dr. Bob do, and what is the legal basis for your advice? If she tells...
*August 1, 2008 by Sindi*

**health information**

Paula Patient doesn't want her violent boyfriend to know she's gettin an abortaion, so she asks Dr. Bob to send all communications to her to a post office box and to phone her only at work. What should Dr. Bob do, and what is the legal bases for your advice? If she tells Dr. ...
*April 10, 2009 by Unknown*

**Physics**

You work for a moving company and are given the job of pulling two large boxes of mass m1 = 115 kg and m2 = 286 kg using ropes as shown in the figure below. You pull very hard, and the boxes are accelerating with a = 0.21 m/s2. What is the tension in each rope? Assume there is...
*May 15, 2012 by Alex*