Thursday
March 23, 2017

Number of results: 148,890

Math-trigonometry
Several questions from my homework, any are appreciated. Thanks! Solve: 1) sinx-tanx=0 2) 3csc^2x=4 Find all solutions within (0,2pi) 3) cos4x(cosx-1)=0 4) cos4x-7cos2x=8 Use inverse functions where necessary to find solutions from 0 to 2pi 5) sin^2x-2sinx=0 Find the exact ...
January 12, 2011 by Michael

Science
When is it appropriate to use groundwater at a rate faster than the rate of recharge? Explain. I'm doing an assignment which has this as one of the questions I have to answer. I've been searching online, research articles as well as goggle searches, but so far have been unable...
November 20, 2011 by Amy

Math help
Find the 98% confidence interval for estimating ìd based on these paired data and assuming normality. (Give your answers correct to one decimal place.) Before 50 55 61 52 68 54 After 34 58 56 36 40 39 Lower Limit Incorrect: Your answer is incorrect. 64.0 Upper Limit Incorrect...
June 23, 2013 by tracy10

In an experiment, a petri dish with a colony of bacteria is exposed to cold temperatures and then warmed again. Find a quadratic model for the data in the table. Type your answer below. show your work.￼￼ time hours , 0 1 2 3 4 5 6 Population (1000s) 5. 3.0 1.7 1....
March 17, 2015 by Ciaria

physics
Find the direction and magnitude of the following vectors. A⃗ =( 22 m )x^+( -15 m )y^ Express your answer in degrees using three significant figures. θA = Part B Express your answer in meters using two significant figures. |A⃗ | = m Part C B⃗ =( 2.5 m )x^+( 16 m )y^ ...
February 11, 2017 by ana22

Math - Trig
A hamster enters a wheel at the lowest point and begins to run . The height of point R (in the diagram below) above the ground is given by the function ℎ(𝑡) = −17.5 cos ( 2pi/3 𝑡) + 19, where ℎ is height in centimeters and 𝑡 is time in...
July 20, 2016 by Anonymous

Math
I need someone to check over this assignment that is for extra credit. I have include the problems as well as the answers . I thank you. Multiple Choice Questions (On Multiple Choice Questions, you do not need to show your work unless asked to.) 1. Write the word name for the ...
September 5, 2009 by tamara jones

statistics
Given a distribution with mean X and standard deviation S, answer the following. 4.1 Determine the mean and standard deviation if constant K is added to each observation 4.2 Determine the mean and standard deviation if constant K is multiplied by each observation 4.3 Assuming ...
October 25, 2007 by sophia

algebra 1
I am having trouble with this problem. I have an equation written down but I have my doubts as to how correct it is. I am thinking of 3 consecutive negative numbers. If I multiply the first with the second and then subtract three times the third, the result is 57. What are the...
March 7, 2009 by Dippy

Geography
4. Which of the following is not a reason why populations rise in particular places? A. Globalization and Capitalism B. Imperialism and Colonialism C. Famine and Drought D. Mercantilism and Industrialization E. Modernaization and Urbanization Answer : C 5. Paul Ehrlich, Thomas...
October 30, 2015 by Geo

to ms.sue
the table below shows the approximate population for the 10 least populated countries in the world.use the data to estimate answers to the problem. vatican city 900 tuvalu 11,000 nauru 13,000 palau 20,000 san marino 28,000 manaco 32,000 liechtenstein 33,000 st.kitts and nevis ...
April 11, 2012 by Celest

Calculus
Let f be the function be defined by f(x)=5^((2x^2)-1)^(1/2) A) is f an even or odd function? Justify answer. B) find the domain of f. C) find the range of f. D) find f'(x)
March 14, 2013 by nikki

calculus
Let f be the function be defined by f(x)=5^((2x^2)-1)^(1/2) A) is f an even or odd function? Justify answer. B) find the domain of f. C) find the range of f. D) find f'(x)
March 14, 2013 by nikki

The one-to-one function f is defined by f(x)=(4x-1)/(x+7). Find f^-1, the inverse of f. Then, give the domain and range of f^-1 using interval notation. f^-1(x)= Domain (f^-1)= Range (f^-1)= Any help is greatly appreciated. Algebra - helper, Wednesday, February 2, 2011 at 7:...
February 2, 2011 by Rachal

Earth Science
Seismic waves move faster through which of the following media? a.) water b.) steel c.) oxygen d.) oil Please answer my study guide is due Monday and the teacher hasn't gone over this I looked through my notes and everything. It would really help if you answer...Please answer ...
January 12, 2013 by ?

Physics
A solid ball and a hollow ball, each with a mass of 2 kg and radius of 0.1 m, start from rest and roll down a ramp of length 2 m at an incline of 34°. An ice cube of the same mass slides without friction down the same ramp. What is the speed of the solid ball at the bottom of...
June 18, 2012 by James

Math
Alice wants to find all the prime factors of the number you get when you multiply 17•11•13•7. She thinks she has to use a calculator to pay Sam although multiplications and then find the prime factorization of the resulting number. Do you agree? Why or why not?
January 10, 2016 by Nerd1234

Trigonometry
Find the symbols for degrees, minutes and seconds on your calculator. Then find cot(43‹41Œ13"). Please give the details of what you did in addition to the answer. Explain what you did to find this. Has any other response used a wrong technique? What would you do to fix it?
September 21, 2015 by April

math
Find the symbols for degrees, minutes and seconds on your calculator. Then find cot(43‹41Œ13"). Please give the details of what you did in addition to the answer. Explain what you did to find this. Has any other response used a wrong technique? What would you do to fix it?
September 25, 2015 by April

Math 11
Is it possible to construct a rectangle whose length is 1cm less than twice its width, and whose area is 40cm^2? If your answer is yes, determine the dimensions of the rectangle to the nearest tenth of a centimetre. If your answer is no, explain why it is not possible. I know ...
February 13, 2013 by Kat

Math
How would I describe a step-by-step procedure for adding two fractions with different denominators? The first thing you need to do is make the denominators the same. You do this by finding their lowest common multiple. We'll use this as an example: (2/3)+(3/8) The first ...
June 21, 2007 by Bianca

math
Atmospheric pressure V decreases as altitude h increases. At a temperature of the pressure is 101.1kilopascals kPa at sea level, 86.4 kPa at h = 1 km, and 77.1 kPa at h = 2 km. Use a linear approximation to estimate the atmospheric pressure at an altitude of 3 km. Please round...
March 30, 2007 by Tina

Precalculus
I don't understand how rationalizing the numerator of tan(1/2)x=sin x/(1+cos x) results tan(1/2)x=(1-cos x)/sin x. The question is what do you multiply by to the first equation to get the second.
November 9, 2013 by Anonymous

problem solving
Given that • The distance from the earth to the sun is 1.5*10^11m, and • The mass of the sun is 1.9 *10^30 kg , 1. use Kepler’s Law of Periods to find the period of the earth’s orbit, recorded in seconds:; 2. show how to express your answer in years; and 3. if your ...
November 4, 2008 by lynn

how do you multiply a radical with a regular number ? for example: 4radical2 ( 2+ 2radical3) first term: 4sqrt2 * 2= 8sqrt2 second term 2sqrt2 * 2 sqrt3= 2*2 * sqrt (2*3) = 4 sqrt6 first term: 4sqrt2 * 2= 8sqrt2 second term 2sqrt2 * 2 sqrt3= 2*2 * sqrt (2*3) = 4 sqrt6
May 20, 2007 by courtney

If 1100 square centimeters of material is available to make a box with a square base and an open top, find the largest possible volume of the box. I'm supposed to type the answer in cubic centimeters... my answer was 2500 cm^3 but it's wrong... I have also tryed with others...
April 6, 2011 by Eva

A salesperson makes a flat fee of \$20 per day plus \$8per hour. Which equation or inequality can be used to find h, the number of hours the salesperson will have to work to make more than \$60 for a day's work? F. 20h + 8 = 80 G. 8h + 20 < 60 H. 8h + 20 = 60 J. 8h + 20 > ...
April 20, 2011 by Sofie

calculus
Me again. One last question! Again, just needed my answer verified with any explanation or walk-through. The position of a particle moving along a coordinate line is s=√(3+6t) with s in meters and t in seconds. find the particle's acceleration at t=1 second. a. 1 m/sec^2...
November 24, 2014 by kailey

Algebra 115
I have been trying this on my own and just want to know if this is right are not 2. Suppose that the linear equation y = 0.3x + 0.9 represents an estimate of the average cost of gas for year x starting in 2002. The year 2002 would be represented by x = 1, for example, as it is...
September 25, 2010 by Donna

trig
Find all solutions to the following triangle. (Round your answers for angles A, C, A', and C' to the nearest whole number. Round your answers for sides c and c' to two decimal places. If either triangle is not possible, enter NONE in each corresponding answer blank.) B = 113...
November 16, 2012 by janice

PROGRAMMING
1. Make a C program that will input two integers and then to enter an option as follows: • 1 = to add the two integers. • 2 = to subtract the second integer from the first. • 3 = to multiply the integers • 4 = to divide the first integer by the second integer. Display ...
September 28, 2014 by ME-ANN

Science- physics
A balloon weighing 80 kg has a capacity of 1200 m3. If it is filled with helium, how great a payload can it support? The density of helium is 0.18 kg/m3 and the density of air is 1.30 kg/m3. Express your answer in Newtons. I know the answer is 12, 400 Newtons I just don't know...
October 23, 2011 by Hannah

Please help with the following: How does sleet differ from snow? A. It is not a form of precipitation. B. It is liquid and not ice. C. It starts as rain and freezes in the air. D. It starts as water vapor and changes to a solid. I know that answer is not D because I got it ...

chemistry
The question asks, "Butanoic acid has a partition coeff of 3.0 when distributed b/t water and benzene. Find the formal concentration of butanoic acid in each phase when 100 mL of 0.10 M aqueous butanoic acid is extracted with 25 mL of benzene at pH 10.00." I know that the ...
November 15, 2009 by For Dr. Bob

College Math
Find the derivative of the following functions: a) f(x)=(3x^2-6 )/(x+2) b) g(x)=sin(e^2 +5x) c) j(x)=6xe^x d) Your velocity is v(t)= t^2 = 1 for 0≤ t ≤ 4. Find or estimate the distance traveled during this time.
April 16, 2014 by Michelle

calculus
Maximize p = 2x + 2y subject to 4x + 8y 24 8x + 4y 32 x 0 , y 0 (Round all answers to the nearest 0.1.) p = Incorrect: Your answer is incorrect. x = Incorrect: Your answer is incorrect. y = Incorrect: Your answer is incorrect.
November 13, 2011 by LC

Algebra 2 ..
Simplify. 1. Log base 4 of 256^2 IS THE ANSWER 8....IF SO AM I SMART? 2. Log of 45 ^x Is the answer 1.65X? 3. Log base 6 of 12 ^(x+1) Is the answer 1.39x+1.39?
February 22, 2013 by Anonymous

Chemistry
General Chemistry 111 11/28/11 Chapter 9 Extra Credit Quiz Name: _____________________________ Section #______________________ Tetrahedral geometry has a bond angle of about 109.5 °. Given that a tetrahedron is made up of 4 equilateral triangles each of length x, what is the ...
December 4, 2011 by Olayinka

chemistry
First of all, you need to know how many g of Mg actually reacted in the first reaction. You can determine this by determining the limiting reactant. The reaction is Mg + F2 -> MgF2 16.2 g of Mg is 16.2/24.32 = 0.666 moles 25.3 g of F2 is 25.3/38.0 = 0.666 moles So equal ...
August 30, 2005 by drwls

Maths
I have 40 questions, 4 marks given for a correct answer, 2 marks deducted for each wrong answer and 1 mark deducted for for each answer not attempted I attempt 19 and score 25 marks.how many questions did I get right
November 18, 2014 by Chris

Math
Can someone help me correct this: The formula below gives a rule for the amount of medicine a child should have if you know the age of the child(a) and the amount , or dosage,(d) of the medine an adult would take.Find the child's dosage(d) for the given values of a and D. ...
October 19, 2006 by Jasmine07202006

math
At the first tri-city meeting there are 8 people from town A, 7 people from town b and 5 people from town c. If a council consisting of 5 people is randomly selected, find the probability that 3 are from town A and 2 from town b. I know that the probability for town A is 3/8 ...
January 27, 2010 by Rmz

Calculus AB
The position function of a particle in rectilinear motion is given by s(t) = 2t^3 - 21t^2 + 60t + 3 for t ≥ 0. Find the position and acceleration of the particle at the instant when the particle reverses direction. Include units in your answer. So I've already gotten the ...
December 13, 2016 by Anon

Logarithm help
using logarithms to solve exponential equations. 5^1+x = 2^1-x I need exact numbers. I did one on my own already. 5^x-1 = 9 5^x-1 = 9 log(5^x-1) = log9 (log5)(x-1) = log9 x-1 = (log9/log5) x= (log9/log5)-1 x = 2.3652 Logarithm help - Joe, Friday, September 18, 2015 at 10:55pm ...
September 19, 2015 by Joe

physics
The figure below shows a test charge q between the two positive charges. Find the force (in newtons) on the test charge for q = 1 µC. Give a positive answer if the force is to the right and a negative answer if the force is to the left. 2µC....-3cm-....q...-2cm-...3µC
January 27, 2009 by julie

geometry-PLEASE CHECK AND HELP DUE TODAY
1. Refer to the following line m: b. Name two rays on m that have endpoint B. d. Find a simpler name for the intersection of rays BA and AC the line m has points a b and c going on across like that on the line would the answer be ba and bc? what would the answer to d be?
May 3, 2010 by jessica

Language Arts
I can't figure out the answer to this question. Which book would not help you find information about the planet Mars. A. Visitors from Mars. B. a history of Mars. C. U.S. Robots on Mars. D. A Journty to Mars Aboard Spaceship Spirit. I think the answer is A. Visitors from Mars...
April 18, 2012 by stephanie

mathematics
a math consist of 20 multiple choice questions 3 points are awarded for a wrong answer. no points and awarded or deducted for an answered questions. jenny attempted a total of 19 questions and her total score is above 32. find the minimum number of correct answer she obtained?
September 27, 2016 by Anonymous

math
Round 0.681 to the nearest tenth. question 2: Estimate 17.64+9.213 by first rounding each number to the nearest tenth.
May 3, 2012 by i need help please2

math
The math team in addville travled to subtractville for a math compertition. The bus averaged 40 mph from addville to subtractville but adveraged 60 mph during the return trip. What was the adverage speed of the bus for the entire trip? Thats the story problem i have to solve. ...
September 28, 2008 by Hanna

Factoring
Factor Completely: 3t^3 + 5t^2 - 12t first take out the t so you have: t(3t^2 + 5t - 12) you should be able to factor it easily from there-- what numbers multiply to get (12 x 3) 36 and add to get 5? 4 and 9. so, you will take 9 and 4 and replace it with the 5, for -9t + 4t...

Math check and question
x is a binomial random variable. (Give your answers correct to three decimal places.) (a) Calculate the probability of x for: n = 1, x = 0, p = 0.15 P(x) = Correct: Your answer is correct. . (0.85) (b) Calculate the probability of x for: n = 3, x = 3, p = 0.15 P(x) = Incorrect...
June 6, 2013 by Nora 57

math,correction
Problem states. which of the ordered pairs (0,0), (-2,10),(-1,-5),(-3,9) are solutions for the equation y=5x? my answer: all first three except the last pair. so yes to (0,0), (-2,10),(-1,-5) You are correct on (0,0) and (-1,-5). You are incorrect on (-2,10). y = 5x = -10 (not...
January 26, 2007 by Jasmine20

Fractions
If all of the followinf operations are present in a math calculation, which of them should always be done first? a. multiplication b. exponents c. brackets d. addition I believe the answer is c.
July 30, 2008 by Jennyv

Math+Log
Simplify the expression: The first 7 is regular size and the log7x are small (the second 7 is subscripted only). 7log7x = would the answer be 1? How do you work this?
February 23, 2009 by Chopsticks

Math
Sorry! I have another problem! 4-2y=4y I always get a bit confused if there's a minus sign in front of a number. The book says the answer is 2/3 So what I first did was. 4-2y=4y 4=6y which is 1 1/2, and wrong.?
February 16, 2010 by Lea

there are 6cars,2 trucks, and 2 motorcycles in parking lot. what is the probability that the first vehicle will be a truck? choices are 1/10 ,4/5, 1/5 or answer not here . i answered 1/10 is this right
May 14, 2012 by Anonymous

Biology
Explain what happens at the first checkpoint If GO is prevented from occuring. Answer: these cells can be called back from the G0 phase to the cell cycle by external cues
December 14, 2014 by HELP!

math
please help with the steps 36+9%3x5= do you multiply 3x5 first? 15 36+9=45 45%15=3 Please advise Thank you also the percent sign is supposed to be division sign
December 26, 2007 by Ashley

Calculus II
y = *The Integral Of sin(4e^t)dt* a = 0 b = ln(2x) I'm supposed to find the derivative of y with respect to x. Except I just can't find the right answer.
November 25, 2007 by Sean

Algebra
Find the slope of the given line, if it is defined y = (x + 4)/7 I can't find the answer. I don't understand what went wrong with my calculation. Thank you.
February 15, 2012 by Jane

Algebra
suppose that y is directly proportional to x and that y=10 when x=3. Find the constant of proportionality k. K= Use y=kx to find when x=6 Y= Is the answer: K=3.33 Y=9.99 Please help. I'm so confused.

drbob222, math , algebra
Can you recheck this hopefully this time i did it correctly. Directions: Crafts. Rose's garden is in the shape of a trapezoid. If the height of the trapezoid is 16m, one base is 12m, and the area is 224m ^2, find the length of the other base. My answer: 224 = 1/2h (B1 +B2) 224...
December 19, 2006 by jasmine20

Physics
Three spheres, each with a negative chrge of 4.0x10^6C, are fixed at the vertices of an equilateral triangle whose sides are 0.20 m long. Calculate the magnitude and direction of the net electric force on each spehere. I already posted this question and was given a solution. I...
April 15, 2009 by Susan

teachers aide curriculum comtent
when are children first developmentally ready to begin learning science? (a)kindergarten (my answer) (b)fifth grade (c)junior high (d)high school according to recent science curriculum guidelines what percent of class time should students spend in hands on learning experiences...
August 27, 2011 by susue

Math
November 8, 2016 by Dan

math
November 10, 2016 by Clara

math
November 10, 2016 by Clara

MATH
1.The length of one of the equal legs of an isosceles triangle is 8 cm less than 4 times the length of the base. If the perimeter is 29 cm, find the length of one of the equal legs. A) 4 cm B) 5 cm C) 11 cm D) 12 cm answers 4x-8= 4(5)-8= 20-8= 12 2.3x - 2y = 6 answer X=4 and Y...
December 7, 2007 by mary

Math115
The distance that light travels in 1 year (a light year) is 5.88 times 10 Superscript 12 miles. If a star is 4.6 times 10 Superscript 7 light years from Earth, what is this distance in miles? Enter your answer in scientific notation. Round the coefficient to two decimal places...
October 2, 2016 by Brita

Mathematics
Help! I've tried this question and i don't come to a correct answer! The value of a property depreciated by 3.25% between 1997 to 2004, and appreciated by 2.75% between 2005 to 2008. In 1997, the value of the property was \$75000, find its value in 2008. My workings: (75000/100...
September 24, 2009 by Marrion

hazard bctcs
one aspect of the beauty of scenic landscape is its variability. The elevations (feet above sea level) of 12 randomly selected towns in the Finger Lakes Regions of Upstate New York are recorded here. 1117, 1360, 1009, 766, 1333, 1306, 577, 1144, 874, 658, 1306, 712. Find the ...
May 22, 2013 by haley

Physics ~ missed this lecture pls help
A thin converging lens of focal length 9.82 cm forms an image of an object placed 18.5 cm from the lens. Find the image distance. Answer in units of cm. What is the magnification for an object distance of 18.5 cm? Find the location of the image for an object distance of 4.06 ...
April 28, 2011 by cr

Trigonometry
Please show me the work so i understand 2. Find the reference angle of -11π/3. 5. If θ = –18°, find the exact value of θ in radians. 6.If θ = 3, find the value of θ in degrees correct to the nearest tenth of a degree. 13.The radius of a circle ...
December 12, 2012 by AJ

For the combining gas law P1V1/T1=P2V2/T2 home work assignment I did three answers on my own and would like you to check them if they are right. If for some reason the answers that I provided don't seem correct please provide me with the right answers. P1V1/T1=P2V2/T2 For ...
May 2, 2008 by Lizy

statistics
Richard has been given a 5-question multiple-choice quiz in his history class. Each question has three answers, of which only one is correct. Since Richard has not attended the class recently, he doesn't know any of the answers. The success occurs if Richard answers a question...
November 9, 2010 by Anonymous

chenistry
this is confusing me so bad!! Nitrogen gas reacts with hydrogen gas to produce ammonia by the following equation: N2(g)+3H2(g)→2NH3(g) If you have 5.79g of H2, how many grams of NH3 can be produced? I said, 2/3 *5.79 = 3.86 but that's not the answer.. it says the answer ...
March 3, 2015 by Jennie

math
Please help me to find the five-number summary of the following set of numbers.338, 226, 149, 391, 247, 501, 300, 223, 320 According to a definition I found online, "The five-number summary of the data consists of the minimum data point, the first quartile, the median, the ...
April 23, 2007 by carmen

Ecology & English
I am writing my answer and my teacher wants me to give an example of parasitism and write a sentence explaining my answer. Is this a good answer also should I keep the semicolon or change it. Sentence: Wolves and deer; The deer are hunted and killed by the wolves in order for ...
October 4, 2015 by Fairypenguingirl

1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration? my answer: I got 10 mm but I'm not sure if it is the correct answer. 2. For two connect pendulums to resonate, they must have the same: a) mass b) amplitude c) density d...
April 27, 2014 by Liz

1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration? my answer: I got 10 mm but I'm not sure if it is the correct answer. 2. For two connect pendulums to resonate, they must have the same: a) mass b) amplitude c) density d...
April 27, 2014 by Liz

1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration? my answer: I got 10 mm but I'm not sure if it is the correct answer. 2. For two connect pendulums to resonate, they must have the same: a) mass b) amplitude c) density d...
April 28, 2014 by Liz

Physics
An ice skater of mass 55.3 kg stops to tie his shoe and is at rest. A second ice skater of mass 32.7 kg is moving at a velocity of 15.9 m/s when he strikes the first ice skater. After the collision the second ice skater has a velocity of 7.5 m/s at an angle of 45.0 degrees ...
April 3, 2008 by Chaz

Math
The winner of the marathon at the 2004 Olympics in Athens was ________ with a time of 2 hrs 10 mins and 55 secs [2::10:55] The offical distance of the marathon is 42.195 KM. Estimate Baldinis average speed in KM per HR. Explain how you got the estimate.
October 17, 2007 by Chelcie

algebra
The formula b=27a, is used in New England to estimate the minimum furnace output, b, in BTUs, for a modern house with a square feet of flooring. What is the minimum furnace output for BTUs? What is the answer to A? I have searched and listened to all kinds of algebra help ...
January 8, 2011 by Demi

math30
Sequences 1)A sequence has a first term of 24 and every other term is one half of the previous term. a)Write the first four terms of the sequence. b)Find a recursive formula that defines this sequence. c)Find an explicit formula that defines this sequence. This will be ...
August 8, 2012 by alejandro

history
1)Who persecuted the Christians first ? -Jews. 2) Who did the Christians persecute? can you help me answer number 2 Thank you
November 16, 2011 by mike

Algebra
Use the quadratic formula to solve the equation. Give exact answers: 2x^2 -1 = 6x. The choices are: a) -3 + square root(7)/2, -3 - square root(7)/2 b) 3 + square root(11)/2, 3 - square root(11)/2 c) 3 + square root(7)/2, 3 - square root(7)/2 d) -3 + square root(11)/2, -3 - ...
June 3, 2009 by Hope

math
Alice wants to find all the price factors of the number you get when you multiply 17x11x13x7. She thinks she has to use a calculator to perform all the multiplications and then find the prime factorization of the resulting number. Do you agree? Why or why not? THX
February 7, 2015 by Kyle

algebra
1)Use synthetic subsitution to find f(-3)for f(x)=x^4-4x^3+2x^2-4x+6 answer= -15 2)One factor of x^3+2x^2-11x-12 is x+4. find the remaining factors answer= x-1;x-3 3)Which describes the number and type of roots of the equation x^3+121x=0 answer= 1 real root,two imaginary roots...
August 17, 2007 by Marissa

Chemistry
Calculate the temp at which the reaction (2POCL3(g) -> 2PCl3(g)+O2(g))would become spontaneous. Given: DH= +572kJ and DS= 179 J/K. Would the answer be 298 K? I found DG to be 518.658 kJ, and then plugged in all the values to DG= DH-TDS. Or, should I ignore the DG, set DH-...
April 11, 2010 by Anonymous

Math
The demand equation for a product is: q=60/p + ln(65-p^3) A) Determine the point of elasticity of demand when p=4, and classify the demand as elastic, inelastic, or of unit elasticity at this price level. B) If the price is lowered by 2% (from \$4.00 to \$3.92), use the answer ...
January 9, 2017 by pebbles

Math
Solve the equation or inequality for 3(2y-4)=9-3(y+1)The answer is 2. How do you work it out to get the answer? (x+5)(x-3)=9 the answer is -6,4 How do you work it out????
December 12, 2010 by Megan Bill

CALCULUS problem
There are four parts to this one question, and would really appreciate if you could show and explain how you get to the answer, because I tried looking up how to find the answer myself, but nothing made sense. Thank you! 11. The region R is bounded by the x-axis, x = 1, x = 3...
March 27, 2014 by Samantha

statistics
Given that x is a normally distributed random variable with a mean of 60 and a standard deviation of 10, find the P(56 < x <74). Please show all your work and write your answer in a complete sentence. Using the information from question 1, what percentage of the ...
July 23, 2012 by Rachel

Hi, I really need help with this question because 1. I suck at geometry and 2. I'm lost but I think this is the answer. Find the volume of a triangular prism with the following dimensions. Round to the nearest whole number. triangle base: 9 ft. triangle height: 4 ft. prism ...
March 2, 2016 by MusicLover14

ALGEBRA
Many states offer personalized license plates. California, for example, allows personalized plates with seven spaces for numerals or letters, or one of the following four symbols. What is the total number of license plates possible using this counting scheme? (Assume that each...
November 26, 2011 by MONICA

algebra
1)What is the distance between the museum and sailing club.I cant post the graph or anything but I have my numbers right its 53 but I used the distance formula so its either 53 units or the square root of 53 units. 2)Write the equation of the parabola y= 4x^2-8x+1 in standard ...
August 20, 2007 by Marissa

calculus
please help me Asap In 1970, the total enrollment in public universities and colleges in a country was 5.1 million students. By 2004, enrollment had risen to 14.3 million students. Assume enrollment can be modeled by exponential growth. (a) Estimate the total enrollments in ...
May 16, 2013 by jeff

Precalculus
Suppose f(x) = 3^x a) Find x where f(x) = 1/27. b) Estimate the value of x where f(x) = 24. So, a) f(x) = 3^x f(1/27) = 3^1/27 b) f(x) = 3^x f(24) = 3^24 Don't know how to solve them :( Please Help!!
February 10, 2010 by jh

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