Math(Please help)

183,433 results, page 66

Chemistry

In the haber process for the preparation of NH3 which is given by the equilibruim? N_2_(g)+3H_2_(g) <---> 2NH_3_(g)...... delta H= -92.38kJ State the conditions of concentrations and temperture that will favor production of NH_3_? Please help! would it be high ...

Physics

Steel railroad tracks of length L = 18.30 m are laid at 10.0° C. How much space should be left between the track sections if they are to just touch when the temperature is T = 49.0° C? mm Please help. I have tried this L° α Δt = 18.3 * 13 10^-6 * (49 -10) = ....

History NEED HELP

Queen Elizabeth I - 1558 - 1603 Did she support or contradict the principle of tolerating other ideas or cultures? Explain why. 3 examples please This is the only question I couldn't find answers to in my textbook. I have to write an essay and include my answer to this in it....

math

Using this formula: V=LWH Find the volume(v)of a toy box with length (L) if 4ft, width(W)of 24in.,and height(H)of 30in. My answer:Wouldn't it be the following; V=(4)(24)(30) V=2888 Please let me know if I am correct. I believe that the formula is V=L*W*H isn't it. Please help ...

Colonial Times

colonial government info. please help Please be more specific about what you need. Which time period? Which colony? If you give us more information, we'll be glad to help you.

please check my answer med reimbursement

Please recheck my answer thanks The Americian Associaton of Labor Legislationimplemented fee schedules True or False I said True

Health please check my answer

Please check my answer thanks True or Faslse The term used to describe why medical treatment is necessary is procedure I say False

I just posted chinese!!

um, i don't think it appears really well on my monitor (is it just mine or...) if you can't see it, could you please give me your email add so that i can email it to you and you can check the mistakes? please help me...

Algebra

Please Solve: 4-x=-5 I thought the answer was -9 but that doesn't seem to be it. Can someone please help? Thanks! This is what I have: 6. 4-x=-5 The problem to solve is: 4-x=-5 Subtract 4 from both sides x = -9 Then divie by -1 Would the answer be 9? To Check: 4- - 9 = -5

Earth Science

What are two forces that cause the Earth's surface to constantly change and what are their effects on the planet? Please help I do homeschooling and I'm super behind in science please answer before 12:00 p.m. on 11-17-09

PSY

I NEED HELP ON THE NEXT WORLDS PLEASE i need the definition also please 1. Performance goals 2. Mastery goals 3. The effect of praise 4. Expectations and self-efficacy

psy

I NEED HELP ON THE NEXT WORLDS PLEASE i need the definition also please 1. Performance goals 2. Mastery goals 3. The effect of praise 4. Expectations and self-efficacy

English

Please find these sentences whether these are correct or not. If not please explain. 1.Neither of these roads----lead----to the railway station.(lead, Leads) 2.Many of these roads--were--- damaged by the earthquake.(was, were)

calculus

find linear approximations for each of the following and put a bound on the error of the estimate. 1. (7.985)^1/3 using f(x)=x^1/3 and a=8 2. (.9997)^100 using f(x)=x^100 and a=1 please help explain please too

Chemistry

Which of the following metals would be expected to have the most unstable salts? a) sodium b) zinc c) tin d) silver Please define for me what 'unstable salts' are please?

elementar

how to prepare research graphic organizer ocean animal.which one is the best like dolhin.please help me i don,t have any idea.how to prepare that one can u please explain me

Chemistry I NEED HELP! PLEASE

How many moles of Hydrochloric acid are needed to dissolve 39.0 grams of aluminum Hydroxide? I just need to write out the equation but I was out and don't know how PLEASE HELP!

alGEBRA 2 help please would appreciate

for the equation -4x-8y^2=0,give the focus and directrix.then sketch the graph, showing both the focus and the directrix. please show all the step thank you.

ALGEBRA 2 help please would appreciate

for the equation -4x-8y^2=0,give the focus and directrix.then sketch the graph, showing both the focus and the directrix. please show all the step thank you.

Please help trig proof

((cotx+cscx)/(sinx+tanx))=cotxcscx Please prove left side equal to right side, only doing doing work on the left.

SCIENCE HELP PLEASE

Suppose the moon rotated on its axis just as quickly as Earth. Would you still always see the same side of the moon from Earth? *HELP ME PLEASE*

Physics

Please help me go through this F = q1q2/r^2, i know this is the equation, but i don't know how to get the answer, please help. What is the electric force between a +2 µC point charge and a –2 µC point charge if they are separated by a distance of 5.0 cm? Show your work...

algebra

I really need that to my examples in my report tomorrow those i posted question, its a kind of test tomorrow please help me now please... even if now only...

science

I grand daughter has this fill in the blank: Electically__________ objects push or _____________ on other electrically charged objects. This produces___________. Please fill in the blanks please. Because we don't know... Thanks!!!!

History

I HAVE NO IDEA WHAT THE ANSWERS ARE JUST PLEASE TELL ME IF THEY ARE WRONG OR RIGHT, PLEASE HELP IF YOU CAN!!!!! 1.-2v-7=-23 A.)15 B.)8*** C.)-8 D.)-15 4.-2(m-30)=-6m A.)-15 B.)-13 C.)-8*** D.)8 5.3n+2=8+2n A.)3 B.)4*** C.)5 D.)6 6.Simplify the expression. -6-7(c+10) A.)64-7c B...

algebra

use intercepts to graph the line described by each equation: -6y = -4x + 24 I was told that the x intercept is 6 the y intercept is -4 Can you please explain to me how that's the answer step by step please (baby steps) Thank you

Lang Arts

I need help on this book called the outsiders if anyone has read this book please email me I really need help its on a oral presentation so Ty please help!!

algebra

Check this problem for me do I have negative sign right with the answer. -1(-1)+-5-5=-2/-10==-1/5 the one on top and the -1(-1) and on the bottom is -5-5. so check this answer for me. Please, Please

algebra

Check this problem for me do I have negative sign right with the answer. -1(-1)+-5-5=-2/-10==-1/5 the one on top and the -1(-1) and on the bottom is -5-5. so check this answer for me. Please, Please

to Lulu - re English

Please do not post a question more than once. If you have further questions, please post under the original question.

To Desmond

Please use Post a New Question -- if you piggy-back a question on another student's question, it's unlikely to be answered. Please repost your question.

Algebra

Add polynomials 0.15x^4 + 0.10x^3 - 0.01x^3 + 0.01x^2 + x 1.25x^4 + 0.11x^2 + 0.01 027x^3 + 0.99 -0.35x^4 + 15x^2 - 0.03 I don't understand PLEASE PLEASE HELP!!

algebra 2

help please!! state the possible rational zeros for each function. then find all zeros. y=x^3-13x^2-x+13 show all the step please .thanks

Algebra 1

Find the y-intercept of the two coordinates ( 2, -5) and ( 6, 3). Please help me with this question and please explain to me and show me how to find Each step to solving the y- intercept. Thank you 😄

Science

Can someone please check my work On science biography quiz It takes my teacher so lone time to grade them so please check it 1.D 2.C 3.B 4.D 5.A 6.B 7.C 8.A 9.D 10.D

math

Of the first graders who were asked, one sixth like math best, two thirds like reading best, and 12 like science best. How many first graders were asked their favorite subject? Please provide a "Draw a Picture" strategy to solve the problem.

7th grade math only 3 questions Ms.Sue please

14. If a right triangle has one of leg measuring 27 inches and one leg measuring 23 inches, what is the length of the hypotenuse to the nearest inch? (1 point) 36 14 3 2 15. The description of a TV is based upon the diagonal length. If the height of a TV is 24 inches and the ...

Math! Please Help!

1. What is the simplified form of (–3x^3y^2)(5xy^–1)? I think it is 15x^4y 2. What is the simplified form of –9m^–2n^5 × 2m^–3n^–6? I have no idea on this one. :/ 3. A rectangular pasture has a fence around the perimeter. The length of the fence is 16x^7 and the ...

Algebra

Simplify: (x)+(4/x)-(1) --------------divide top by bottom (1/x)-(3/x^2) I have been trying to solve this one, but I just don't know how to start. I feel like I am missing out on some math rules, so please help!

math repost with correct info

A loan requires A 12% down payment and 24 equal monthly payments of $195.00 the amount that needs to be borrowed is $4,200 please explian how to figure this out thanks :)

math

Solve the system of equations: x - y - z = 2 x + 2y - 2z = 3 3x - 2y - 4z = 5 I know how to do the whole process, but sometimes I make careless errors that I never catch when I go over my work. This is the answer I worked out: x = 5 y = 1 z = 2 could somebody please let me ...

math help please

Examine several newspapers and magazines and describe at least three examples of functions that appear. What is the domain and range of each function? can someone give me some websites to look at.

math

HELP ME!!!!!!!!! We started coordinate plains and now I'm trying to do this stinkin homework!its asking me to find the ordered pair corresponding to each point graphed at the right. I have NO idea how to do this, so please be kind and HElP MEEEEEEEEEE!!b!!b!!!!

Math

For the following, use the inverse relationship between logarithms and exponentials to determine x. log2(x^2−2x)=3 Solution Set:_____________? I don't know how to do this question at all :( Please help and show the work as well so that I can learn! Thanks.

MATH

Use multiplying by one to find an expression equivalent to 12/11 with a denominator of 77z. I have an entire worksheet of problems like this. Could someone please explain to me how to complete this type of problem.

math

Please explain how $12,905.80 is the answer to the question: To save for retirement, a couple deposits $4000 in their account that pays 5.9% interest compounded quarterly. What will be the value of thier investment in 20 years?

math

Factor the following. You will earn 5 points for each polynomial that is factored correctly. Please label your individual answers with a - f. a.) 4x2 - 25 b.) 3x2 + 6y c.) x2 - 7x + 10 d.) 2x2 - 9x - 18 e.) 2ax + 6bx + ay + 3by f.) 6x2 + 12x - 48

Math

ALL the factors for 1,498,677,308,996? It's taking me too long....o.o Thank ye for the help! xD I thank: Ms. Sue for answering my Economics question, you rock! Someone please answer this! Lots of love from Pancake <3

Math homework, check+ Help please? :)

Here is a picture of what I'm doing so that the helpers will explain it better: oi54.tinypic(Dot)com/k6vjd.jpg What I don't understand is How would you set it up and solve this? Could someboy help me? Thank you.

math

a rope 60m long and 5cm in diameter is coiled tightly. Estimate, correct to one significant figure, the radius of the 'circle' formed. ( please could we have working out).

7th grade math quick please

Mrs. Miller sells a house for $179,000. If she earns a commission of 6%, how much money does she earn? Write a proportion and show your work.

Math

How do you do these questions, I have all my steps done until the last one: 2x(2x)^2: 2x(4x^2)? Now do I multiply or add the big numbers? also Im having trouble on these: 1. x^2(xy)^3: x2(x^3y^3) 2. 3x^2(2x)^3: 3x^2 (8x^3) 3. -2x^2y(3xy^2)^2 4. -(3x)^2: -(9x^2)? 5. 5x(2x^2)^2 ...

Math

Use synthetic division to determine which pair of integers provide both a lower and an upper bound for the zeros of f(x)= x^5-2x^4-25x^3+50x^2+144x-290 PLEASE SHOW WORK!!!

Math

I've been at this question almost an hour, I just need help before I start pulling hair out of my head! LOL Please Help? :D Solve the inequality and describe the solution set. y - 6 _>_ 12

Math

Find the coordinates of the point at 180 degrees on a circle of radius 3.4 centered at the origin. Round your answers to three decimal places, if required. ( , 0 ) I got 0 as the y coordinate. Please help me solve for x

6th Grade Math Help

Hi, I really need help. The question is find the area of the parallelogram which is not drawn to scale. I think the base is 24 cm, the height 9 cm, and the left side that's kind of cut slanted is 8 cm. Please help! Thanks!

Math

a 150-day loan for $2,500 has interest of $57. Find the rate to the nearest tenth of a percent. a. 3.2% b. 24.4% c. 10.4% d. 5.5% Please walk me through on how you got the answer. I have tried, and can not figure it out.

Math

Which of the following functions have graphs that contain no asymptotes? Select all that apply. (2 points) a. power; y=x^n b. reciprocal; y=1/x c. exponential; y=b^x d. logarithmic; y=log b x e. root; y=n(rt(x)) Please help I'm really confused. Thank you!

math

Please solve this word problem, It will take at least 360 points for Kiko"s team to win the math contest. The scores are 94,82, and 87, but one of Kiko's teammates lost 2 of those points for an incomplete answer. How many points must Kiko earn for her team to win the contest?

math (algebra)

Hi. At the sit for mcgraw hills algebra 1 book (website URL is obvious), but don't have a name or password! Could somebody please lend me theres? post it here! Viit Viit! Your teacher needs to register you. http://www.glencoe.com/sec/math/ose/index.html

Algebra

please help me with this question. please explain this question to me and how you got the answer to the question. Solve the inequality. > 10 A. y < –16 B. y > –60 C. y > 4 D. y < –60

Calculus help please

I have to evaluate the following: tan((sin^-1)(2/7)) and sin^-1 (sin(17pi/6)) Please help.

HELP!!!!EMERGENCY WITH THE POEM!!!

do anyone knows a poem named "Instruction for Joining a New Society", which about the desire to become an American? I need this poem immediately!!! Thank you for using the Jiskha Homework Help Forum. If that is the title, I find nothing! If you have either the title or the ...

math

g/5+2>10.......solve Please read: http://www.math.com/school/subject2/lessons/S2U3L4GL.html Now try adding -2 to both sides. then multiply both sides by 5

Math

I do not understand this problem, and I must write an inequality for it too: Nilsa is working on a 60 minute math test. There are 20 questions on the test. If it takes her 20 minutes to complete 12 of the questions, what is the greatest amount of time on average she can spend ...

Math (check please)

Could you check these please? Firewood is usually sold by a measure known as a cord. A full cord may be a stack 8x4x4ft or a stack 8x8x2ft 10. what is the volume of a full cord? 8*4*4=(128ft) 11. A short cord or a face cord of wood is 8x4xThe lenght of the logs. What is the ...

English please check my answer

please check to see if I have the right answer thank you The patient had a radiogram performed. What doed the root word indicate I think it's b

Science Please I NEED Help!!!!!!!!!!!!!!!!!!!!!!!!

Describe how the instantaneous speed of a car changes when the car is moving with constant speed , speeding up, and slowing down please answer as soon as possible

Science

Can someone please give me a SIMPLE definition of metabolism. I've seached tons of dictionaries, but they all give a long and confusing definition and I'm not sure if I understand the concept.. Please help!!

Algebra uno help please :)

Write an equation of the line that passes through the given point and is parrel to the given line. 1. (-1,3) Y=2x+2 I'm thinking that you just plug in -1 and 3 for x and y. So, 3=2(-1)+2 Correct? Please help me. :) Thank you -Allyson

Calculus

The function f(x)=(x^4)-(10x^3)+(18x^2)-8 is continuous on the closed interval (1,8). Find the absolute minimum and maximum values for the function on this interval. Please help me!!! And please show your work so that i understand!! Thank you!!

programming

How do i Create a program that determine the shipping cost for an order based on the following table:  From To Price   $0.00 $19.00 $2.95   $20.00 $49.99 $3.95   $50.00 $74.99 $4.95   $75.00 $1000.00 $Free  I don't understand how to do this...Would anyone please help...

algebra 1

a number is less than one fourth of the sum of three times the number and four. can someone please explain to me how they got this answer and can someone please show me each step.

Calc Help Please

Evaluate the integral. integral 1/((x-2)(x+2)) Note: Use an upper-case "C" for the constant of integration. I keep getting 1/4[log(2-x)-log(x+2)]+C and the system is saying its wrong... Please help!

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!!

English

Can you please check these last sentences,please? 1) How do you pronounce the word UNO (United Nations Organization)? 2) Unfortunately we couldn't find any vacancy for a cabin for the required period. 3) Where did he get inspiration for his book? 4) Who did he get inspiration ...

Math

can someone please help me with the following 2 questions and how to do them. i have a math final tomorrow!! 1. Curtis runs 1 mph slower then Mary. After 2 hours of running in opposite directions, they are 30 miles apart. How fast had Curtis been running? a-9mph b-8mph c-6mph ...

Chemistry- URGENT please HELP

NH4NO3(s)+H2O(l)→NH4NO3(aq) ΔH = +25.7 kJ. What is the final temperature in a squeezed cold pack that contains 49.0g of NH4NO3 dissolved in 125 mL of water? Assume a specific heat of 4.18J/(g⋅∘C) for the solution, an initial temperature of 28.5∘C, ...

Math(Easy Survey Please Help)

I need 75 of these surveys filled out to do a regression analysis for Economics. Just answer the 10 easy questions for me please. 1. Do you exercise or work out on a regular basis? 2. Are you male or female? 3. Do you smoke? 4. How many carbonated soft drinks do you consume in...

MATH

About 0.350 of s stretch of forest is being cleared of timber. If the stretch of forest is divided into hundredths, how many hundredths are being cleared? Can you help me solve this question? Please see my previous answer. http://www.jiskha.com/display.cgi?id=1170455048 Please...

Floating Point Notation

Help me please, anyone understand this topic. For example 1011 1110 in Floating Point = ? and hot to accomplish this. Please!

Chemistry-please help

Please show me the calculation steps. How do I prepare 10%w/w Hydrochloric acid from 37%w/w Hydrochloric acid? The density of 37%w/w HCl is 1.19g/ml. Thank you.

chemistry project please help really need it

help me out in choosing a topic for my project it should be anyhow related to chemistry help me please

Calculus Help Please!!!

Use implicit diff. to find dy/dx of each of the following. In the following x,y and (a) are all variables. Show step by step please! Thank you! 1) y^2 = x^2+a^2 2) y^2+ay = x^2+ax+a^2

perfect number

I need two perfect numbers. For my activity,I should submit it tomorrow please help me. I need now. Please

perfect number

I need two perfect numbers. For my activity,I should submit it tomorrow please help me. I need now. Please

Physics

Can someone please explain how to tackle this problem? Cu - Anode electrode Zn - Cathode electrode A current of 2 amps is sustained for 16 minutes. what mass of Cu(s) is deposited on the zinc electrode? (Faradays' constant: 96500 C/mol e-) Please and thank you!!

ap history

what did the great awakening, intercolonial trade and the rise of the colonial assemblies have in common? Please note that we don't do students' homework for them. Once you have come up with your response, please repost, and someone here will be happy to critique your thinking...

chemistry

Please calculate the solubility of calcium sulfate in 0.010 mol/L calcium nitrate at SATP. This very question has been bugging me all weekend. Can some one please solve this quesiton it would really be appreciated.

Maths

hello Can someone please help me with solving simultanaous equations using graphs My problem is that i don't know how to plot them on the actal graph and nor I know how to plot the gradient withing this paticular situation I need help with some steps please MY IGCSE's are ...

Help me please!!!

Hi, I have an assignment in which i am supposed to identify a good citizen in my community. i need to write an essay on why he/she deserves that title. The problem is that i have just moved to this country so i don't know many of the people here and what they do. what do u ...

English- American Lit

Hi can you please help me with John Cheever's Enormous Radio. I'm having trouble understanding what it was in the story that helped create our national identity of the time (1947) is it the new radio that Jim bought his wife? please help me.

English- American Lit

Hi can you please help me with John Cheever's Enormous Radio. I'm having trouble understanding what it was in the story that helped create our national identity of the time (1947) is it the new radio that Jim bought his wife? please help me.

history

show how the role of the federal government was viewed by different groups at different times in the 20th century. i don't even know how to begin answering this question. i'm so stuck. can someone please give me enough ideas to get started? please help me thanks a lot

english

please help me with this. it's an essay question that i'm really stuck on based on romeo and juliet. please help!!! thanks what are some decisions Romeo had to make that could possibly decide his fate, and how are his decidion-making skills in the first two acts of the play?

English

Hello. Please help me with the verb "purpose". Is it possible to use it in the sentence "The latest terrorist attack is purposed to intimidate the world" or is it used in a different meaning or a different form (if yes, will you please give a short example). Thank you very much.

cal3 please help!

Use Lagrange multipliers to find the max/min values of the function f(x,y)=xy subject to the constraint: x^2/8+y^2/2 =1 so I compare the gradient vectors of both f(x,y) and the constraint: <y,x>=L<x/4,Ly> resulting in y=Lx/4 and x=Ly now how do i solve for L x and ...

PLEASE HELP GEOMETRY

When constructing inscribed polygons and parallel lines, how are the steps similar? a protractor is used to take measurements four right angles are created a compass is used to copy an angle **** there are no similarities I think its c, but it might be b. PLEASE HELP <3

Math(Please, please help)

Compute the maximum product for two positive numbers x and y with the property that the sum of the first plus five times the second is 5000. 1) Indicate the objective equation 2) Indicate the constraint equation So the objective = f(x)=xy and the constraint = x+5y=5000 Now ...

math urgent help needed!!

I am so sorry but this homework is due in half an hour. Please help me! A smokestack deposits soot on the ground with a concentration inversely proportional to the square of the distance from the stack. With two smokestacks 20 miles apart, the concentration of the combined ...

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