Questions Asked on
April 13, 2007

math,algebra,help
I need help this is for homework this problem but i feel like i can't solve because i am missing some information or am i wrong. If so what am i suppost to do...help me THe height "h" in feet of an object after "t" seconds is given by the function : h =
asked by jasort120 
calculus
how do you calculate the instantaneous rate of change. is that the derivative. also: if f is the antiderivate of (x^2)/(1+x^5 such that f(1)=o then f(4)=? How would i find the integral of that? i don't even know what the first step is to get the answer.
asked by david 
Accounting
This is in regards to adjusting entries. If I own a hotel and In order to reserve a room you must pay $220.00 in advance, what type of adjusting entries do I make, How do I determine the amounts of the adjustments, and which accounts are affected?
asked by Lynn 
Chemistry
Given four unlabeled compounds and four labels (potassium sulfate, potassium carbonate, chromium sulfate, and cobalt bromide) is there a simple test that will allow correct labelling of each compound? I take we are looking for a simple school lab type
asked by Fiona 
EFFECTIVE WRITING
WHAT ARE SOME ADVANTAGES FOR BOTH REVIWER AND WRITEROF PEER REVIEWS? HOW WOULD YOU ENCOURAGE A RELUCTANT http://www.jiskha.com/search/search.cgi?query=HOW+WOULD+YOU+ENCOURAGE+A+RELUCTANT Idella, when you type in allcaps, two things happen: ~~it's harder
asked by IDELLA JONES 
physics
35 amps of current goes through a 40 amp fuse. What happens? 25 amps of current goes through a 15 amp fuse. What happens? Think about what a fuse is used for. Why would you put a fuse in a circuit?
asked by Anonymous 
math
José rode his trail bike for 10 miles. Twothirds of the distance was over a mountain trail. How long is the mountain trail? Two thirds of 10 miles 10/1 X 2/3 = 20/3 = 6 2/3
asked by Anonymous 
Admissio Appeal Letter, the most updated one
Plz give some helps for my appeal letter. Thanks Dear Undergraduate Admission Office, I recently received a letter from Purdue University informing me that I have been offered an admission to The College of Engineering for Summer 2007 at Purdue University
asked by crzyadmi 
Physics
A rod made from a particular alloy is heated from 23.5°C to the boiling point of water. Its length increases by 8.21 104 m. The rod is then cooled from 23.5°C to the freezing point of water. By how much does the rod shrink? I will be happy to critique
asked by Mary 
Physics
During an allnight cram session, a student heats up a onehalf liter (0.50 103 m3) glass (Pyrex) beaker of cold coffee. Initially, the temperature is 19°C, and the beaker is filled to the brim. A short time later when the student returns, the
asked by Mary 
Integral calculus
Please can anyone help with the following problems  thanks. 1) Integrate X^4 e^x dx 2) Integrate Cos^5(x) dx 3) Integrate Cos^n(x) dx 4) Integrate e^(ax)Sinbx dx 5) Integrate 5xCos3x dx The standard way to solve most of these integrals is using partial
asked by Febby 
Integral calculus
Please do help solve the followings 1) Integrate e^4 dx 2) Integrate dx/sqrt(90^24x^2) 3) Integrate (e^x+x)^2(e^x+1) dx 4) Integrate xe^x2 dx e^4 is a constant. 3) let u= e^x + x du= (e^x + 1)dx 4) let u= x du=dx v= e^x dv= e^x dx
asked by Febby1 
Integral calculus
A particle is put inside an accelerator at time t=0. After t sec, its velocity is 10^5t^2 m/s. How far does the particle move during the first 10**2 sec? distance= int velocity dt = INT 1E5 t^2 dt limits 0 to 1E2 sec
asked by Febby 
algebra help
The line graph below shows the number of stray dogs in a certain city for the years listed the bar graph shows the years in 1998 5 stray dogs 1999 2 stray dogs 2000 6 stray dogs 2002 8 stray dogs 2003 9 stray dogs Between which two years did the greatest
asked by Amanda 
chem
45.0 grams of water vapor is cooled from 150 to 101 degrees celsius. How much heat energy was lost? heat= mass*specificheatsteam*deltaTemp
asked by jess 
graphing question
Write the equation of the line with slope 4 and yintercept (0, –5). Then graph the line i wrote the equation which i think is y=4x5 i point the y intercept (0,5) in the graph how do i find the other point would the 4x become 4/1 x y=4/1x5 then move
asked by linda 
Constitution
if an amendment violates the constitution,why should the Supreme court block its ratification? How can an amendment violate the constitution? THe amendment once adopted is a PART of the consititution. Now proposed amendments are all unconstitutional
asked by h 
calculus
The circumference of a sphere was measured to be 76 cm with a possible error of 0.2cm. 1. Use differentials to estimate the maximum error in the calculated surface area. Please round the answer to the nearest tenth. 2. What is the relative error in the
asked by Sam 
calculus
1) Integrate (e^x+x)^2(e^x+1) dx 2) Integrate xe^x2 dx Let u=(e^x+x) du=(e^x +1) dx I will be happy to critique your work or thinking. You are posting work for me to do, and I am not inclined to do that, it will not help you for me to do it. I think I gave
asked by Febby 
calculus
1) Integrate Cos^n(x) dx 2) Integrate e^(ax)Sinbx dx 3) Integrate (5xCos3x) dx I Will be happy to critique your thinking on these. 1) Derive a recursive relation. 2) Simplest by replacing sin(bx) by Exp[i b x] and taking imaginary part at the end. 3) First
asked by Febby 
math
I am helping my child with this. Can you show me how to Solve word problems by writing an equation with a variable to represent the given information and then solve the equatin.
asked by prscilla 
word question in algebra
oh i think i see instead of ft/miles because i changed the 13 miles to ft it would be 0.61 ft/ft An airplane covered 13 miles of its route while decreasing its altitude by 42,000 feet. Find the slope of the airplane's line of descent. Round to the nearest
asked by carla 
Physics
A skier wears a jacket filled with goose down that is 15mm thick. Another skier wears a wool sweater that is 7.0mm thick. Both have the same surface area. Assuming the temperature difference between the inner and outer surfaces of each garment is the same,
asked by Cj 
math
you roll a number cube. what are the odds in favor of rolling a 1 or a 5?thanks. There are 6 sides of a cube. You want one of 2 numbers to show up. So it's 2/6 chance....or 1/3 Matt I assume that you are talking about a die (Singular for "dice"), it has a
asked by dillon 
Physics
Suppose the skin temperature of a naked person is 34 degree celsius when the person is standing inside a room whose temperature is 23 celsius. The skin area of the individual is 1.5m^2. (a) Assuming the emissivity is 0.80, find the net loss of radint power
asked by Coreen 
Health Question
Dietary assesment can provide useful information about which? A. a child's eating pattern (or) B. physical symptoms of nutitional deficiencies. Isn't it B? Yes, it's B. =)
asked by Laura 
Physics
A skier wears a jacket filled with goose down that is 15mm thick. Another skier wears a wool sweater that is 7.0mm thick. Both have the same surface area. Assuming the temperature difference between the inner and outer surfaces of each garment is the same,
asked by Cj 
Chemistry
Would it be correct to say that it is harder for a weak electrolyte to dissociate in a solution than it is for a stronger electrolyte to dissociate? If a weak electrolyte can't dissociate completely it wouldn't be able to form an equilibrium reaction
asked by Chrissy 
Math
Susan finished typing 1/9 of an article in the first houe and finished 1.4 of the remaining in the second hour. she then typed 2.3 of the leftover from the first two hours in the third hour. left over from the first hour= fraction of article typed on 2nd
asked by Anonymous 
experimental probability
you spin a spinner 50 times. it lands on red 8 times, yellow 12 times, green 20 times, and blue 10 times. based on the results, what is the experimental probility of its landing on green or yellow? thanks I will be happy to critique your work on this. i
asked by dillon 
Chemistry
Can u tell me the practical details of how you would prepare 0.5mol/dm3 hydrochloric acid solution from a stock of 34% (w/w) with a relative density of 1.18. Figure the number of moles per liter of the concentrate. Say is is 17 for example sake. You want a
asked by Kimoya Davy 
Math
3/4 of the seats in a school bus were occupied. after 3 students got off the bus, only 2/3 of the seats were occupied. The 3 students are equivalent to________of the bus seating capacity, then seating capacity of the bus=_____________. I will be happy to
asked by mary 
equilibrium question
For the reaction N2(g)+o2(g)2NO(g), you have the initial concentration [N2]=0.03 and [O2]=0.08 Keq for the reaction at this temperature is 5.7*10^5. What are the equilibrium concentrations for N2, O2, and NO? Please help me with this!
asked by Chrissy 
math
8 workers together at the same rate finished a painting job in 5 hours. hour long would it take 12 such workers working at the same rate to finish the same job? each worker finished____(fraction) of the job in one hour. 12 workers finished_____(fraction)
asked by Jonathan 
Poetry
I am supposed to give a literal explanation of this poem, but I am really confused by it. Your help will be much appreciated. Snow & Ice by Quincy Troupe ice sheets sweep this slick mirrored dark place space as keys that turn in tight, trigger pain of
asked by Tracey 
spanish
"Do you know the requirements?" Which translation is appropriate for the above question: 1. Conoces alquien con estos calificacones? 1. Conoces alguien que puede llenar estos requisitos? Thanks! Or am I totally off! Thank you for using the Jiskha Homework
asked by jules 
Chemistry
A certain mine produces 2.5 108 kg of copper from chalcopyrite (CuFeS2) each year. The ore contains only 0.80% Cu by mass. (a) If the density of the ore is 2.0 g/cm3, calculate the volume of ore removed each year. (b) Calculate the mass of SO2 produced by
asked by Chemistry 
math
problem is solve for the unknown 2/3 over 10 = 1.8 over r dont even know where to start to solve this please help crossmuliply 2/3 r = 18 multiply both sides by 3/2 thank you
asked by patti please help 
Statistics
Can somebody please help me get started on this problem? In a study that was highly publicized, doctors discovered that aspirin seems to help prevent heart
asked by Frederick 
math
am I right here the problem is 72divided by89 divided by 3 I came up with 72 divided by 8 =9 and 9 divided by 3 =3 so it would be 93=6 write your arithmetic this way: 72/8  9/3 yes, you are right. thanks
asked by patti please help 
Geometry
A photocopier wants to enlarge a work by 120%. The original area is 10 inch^2. What would be the area of the enlarged copy? Thanks. 10^2 = 10 * 10 = 100 square inches. Find 120% (1.2) of 100 square inches by multiplying the two. I hope this helps. Thanks
asked by Jen 
math
to write 116 2/3 as a fraction would I multiply the 116x 2/3? Multiply 116 x 3 and add the remaining 2/3 to get the answer in thirds. I hope this helps. Thanks for asking.
asked by patti please help 
Math
a car travelled 60 km in 25 mins. its speed is equilent to _____km/hour. In 2 1/3 hours this car travelled______km if it maintained at this speed. when you change mins to hour to you divide 60 into 25 to get the km/hour??? im confused. 60km/25 min. =
asked by Anonymous 
English
hey im doing analogies... and i need help on some of them Seatbelts : Cars:: a)filters:coffee machines b)oven:stove c)radio:sound waves d)color:paper e)bricks:contruction and i thought A would fit into the seatbelts and cars but whats a sentence that i can
asked by anna 
Math
Tap A fills up a water tank in 45 mins. Tap A fills up_____(ugh soo right here for the answer... do i put it in a fraction or something?)of the tank in one min. Tap B fills up the same tank in 75 mins. Tap B fills up_____of the tank in one min Tap A and
asked by karen j. 
MATH
1/(X^2Y)1(XY^2)=____ XY (square root of 84  square root of 5.25) I don't understand the first equation. sqrt(84)=sqrt(4*21)=sqrt(16*5.25)=4sqrt(5.25) so sqrt(84)sqrt(5.25)= 4sqrt(5.25)sqrt(5.25)=3sqrt(5.25)
asked by JORDAN 
English
whats figurative language? Check this site for a great explanation and examples. http://volweb.utk.edu/school/bedford/harrisms/1poe.htm Thank you for using the Jiskha Homework Help Forum. If you are seeking a definition for "figurative language" it is used
asked by kev 
Math
A pentagon is formed by putting together three identical equilateral triangles and one larger equilateral triangle with length of edge equal to 2 times that of the smaller equilateral triangle. If the perimeter of the smaller triangle is 42 cm, what is the
asked by Cindy 
Math
Two perpendicular diamters(cutting each other at right angles) of a circle cut the circumference at four(4) points. A square is formed by joining the 4 points. If the circumference of the circle is 132cm, find the area of the square. so right here they
asked by Cindy 
math againnn
A rectangle prism is measured 84cm (L)X 42cm (w) X 56cm (H). What is the largest size cube that fits the dimensions of the prism? What number of cubes is required? i don't even know how to start it T_T The question is poorly worded Interpretation #1 The
asked by Cindy 
m m a t h
Starting from 1993 john saved 5 dollars in that year for the subsequent years, he saved 3 times the saved amount of the preivous year. what is Johns total savings at the end of 1998? looks like a geometric sequence with a=5 r=3 n=5 You should know the
asked by Anonymous 
algebra
twice the length L of a rectangle is equal to 3 times its width W. Its perimeter is 120 cm. translate the English into math.. "twice the length L of a rectangle is equal to 3 times its width W" 2L = 3W "Its perimeter is 120 cm." 2L + 2W = 120 but 2L=3W so
asked by Carllll needs help 
math
a bag contains 33 green marbles and 25 blue marbles. you select a marble at random from the bag. find the theoretical probability of selecting a blue marble. thanks Pr(blue)= number blue/total marbles
asked by dillon 
Math please
A 75% alcohol concentration mixture of water and alcohol was made by mixing 30ml of pure alcohol with 150 ml of original mixture of water and alcohol. what was the alcohol concentration of the orignal mixture The amount of water has not changed. Since the
asked by Carllll needs help 
Sales tax
tom paid 695.5 for a tv when 7% sales tax was included in that price what was the price of the tv before the tax and how much sales tax did tom pay? You can set it up this way: 1.07x = 695.5 x = _______ That will tell you the price of the TV. The
asked by Arkuk 
Math expression
If the customer uses more than 450 minutes the payment is $39.99 for the first 450 minutes plus $0.45 for each minute over 450. How do I convert this into an expression? this is what I got, but my teacher says its not right,but its close and I am not sure
asked by Soly 
Health
Screening tests are often provided for young children for the purpose of: 1. identifying children who require professional evaluation. (or) 2. diagnosing a specific health impairment. Would the correct answer be 1, because screening tests don't diagnose a
asked by Laura 
Science
What differences between highquality matter and lowquality matter The quality. Since this is not my area of expertise, I searched Google under the key words "high low quality matter" to get these possible sources:
asked by Lynn Butler 
How to find the enlarged area Geometry
Reposting.. The original area is 10 inch^2. If the area is enlarged by 120%, what is the new area? Please help. Thanks. Ten multiplied by 1.20 No, the answer is 14.4 Nope! bobpursley is right, a 120% increase of 10 inches^2 is 12 inches^2 Perhaps you
asked by Jen 
BUSINESS
A example of a nonprogrammed decision for a clothing manufacturer is a. allocating bonuses to employees. b. acquiring a new supplier for cloth. c. deciding to market products using the internet. d. selecting which customers to offer discounts to. This
asked by CYNNA 
Business
Nataly works in Young Women's fashions in a department store. Within this apartment she specializes in knitware. This is example of which of the following departmental schemes? a. customer, functional b. product, customer c. function, process d. customer,
asked by CYNNA 
english
I need to know how to find the plot in a poem. The poem is "The Passionate Shepherd to His Love" by Christopher Marlowe http://en.wikipedia.org/wiki/Plot_%28narrative%29 Scroll down to the list in Typical plot structure and see how the events in this poem
asked by april 
mATH, ALGEBRA
i need help solving the system by addition. 5x7y=5 x+3y=1 this is what i think but i am not sure 3y=x+1 y= (1/3)x+(1/3) 5x  7 (1/3x + 1/3) = 5 5x+2.3333331x2.3333331=5 7.3333331x2.3333331=5 7.3333331x=7.3333331 x=1 x+3y=1 1+3y=1 3y=11 3y=0 y=0 so
asked by jasort120 
chemistry
what is the clinical importance of doing the amino acid sequence determination Since this is not my area of expertise, I searched Google under the key words "amino acid sequence determination" to get these possible sources:
asked by angel 
Hearing Question
Middle ear infections can result in a conductive hearing loss. A person who experiences this type of impairment is likely to have difficulty hearing loud sounds or soft sounds? Don't they have difficulty hearing soft sounds? Thank you for your help! yes,
asked by Brandie 
health
what is and aorta and were is it http://www.google.com/search?q=aorta&rls=com.microsoft:enus:IESearchBox&ie=UTF8&oe=UTF8&sourceid=ie7&rlz=1I7SUNA Lots of good websites with descriptions and illustrations for you. =)
asked by tamra 
language
Which word sounds better to use in this sentence? You are the coolest person I ever met. OR You are the coolest person I ever meet. Which word do I use? Is it the word MET or MEET? The first sentence is correct. You cannot compare "you" to people in the
asked by Mack 
Chemistry
An indicator has the reaction HIn(aq)+In(aq). Explain how the indicator can change color when a strong acid is poured into a solution of this indicator. Did you intend to write HIn(aq) H^+(aq) + In^(aq) addition of H^+ from an acid causes the equilibrium
asked by Chrissy 
business
What is the impact of electronic commerce on the entire United States legal system? Describe the impact of ecommerce on the global legal environment That sounds like a major research paper  or maybe several books. What have you found from your research?
asked by Tim 
Elem. Ed.
Can you help me to fill in the blank to this sentence? Molly is an older 4yearold and her teacher is concerned about her _________ speech development because she is difficult to understand and this has not changed in the last year. 1. receptive 2.
asked by Keisha 
Physics please check
Please tell me where i went wrong. During an allnight cram session, a student heats up a onehalf liter (0.50 103 m3) glass (Pyrex) beaker of cold coffee. Initially, the temperature is 19°C, and the beaker is filled to the brim. A short time later when
asked by Mary 
work force
a force of 10 pounds is required to stretch a spring of 4 inches beyond it's natural length. assuming hooke's law applies, how much work is done in stretching the spring from its natural length to 6 inches beyond its natural length. what i did so far:
asked by david 
poetry
is plot the same as a conflict? Thank you for using the Jiskha Homework Help Forum. No, they are not the same but one is not much good without the other! plot = the plan or main story conflict = the dramatic action in a drama
asked by april13