Kelly

13.75 is the same as 12.5 plus a fraction of 12.5. What is the fraction? HELP. THANK YOU!! I would do this. 13.75 - 12.5 = 1.25 difference. 1.25 is 1-1/4 (one and one-fourth) and that is the same as 5/4. So 13.75 = 12.5 + 5/4. Check this out. 6=7\3=14

19 years ago

what would a graph look like if.. y= (3/4)x + 2 and the domain is... x = {-8,-4,0,4,8} would it be discrete or continous? Kelly you should be able to see that the first equation is a line. You should be able to determine the slope and intercept as well. S...

19 years ago

In the definition of intercepts, it says THE y-intercept, but AN x-intercept. Sketch a graph which shows that a function could have more than one x-intercept. Explain why a fuction could not have more than one y-intercept. How about the x-axis? If it had...

19 years ago

I have no idea what this problem means: For how many two-digit numbers if the ones digit larger than the tens-digit? Can you find a systematic way to arrive at the number? Ok, every 2-digit number looks like xy, where x is the 10's digit and y is the one'...

19 years ago

If the measure of angle A is doubled and then decreased by 10 while the complement of angle A is decreased by one-third of itself, then these two anlges formed are still complementary. Find the supplement of angle A. Please explain so i could understand....

19 years ago

What is the doamin and range of: y= square root of (3-2x) The domain must be non-negative when we have a square root. Thus 3x-2 is greater than or equal to 0. The range will be non-negative too. All real y =>0. verify this.

19 years ago

just an algebra question. how would you solve: (3x^2 +5)(3x^2 +5) ^ means power :] Since you have not given us an equation, it is impossible to "solve" your problam. Please repost with the complete equation, so we can help you. I hope this helps a little....

19 years ago

Who invented the first microscope and what did it look like? http://www.cas.muohio.edu/~mbi-ws/microscopes/fathers.html

19 years ago

how much did the first microscope magnify? i think it magnified from 6x to 10x....from all the research i gathered... how much does the first microscope magnify

19 years ago

what is the fibonacci sequence and what is its relationship to the golden ratio? http://www.google.com/search?q=fibonacci+golden+ratio&start=0&ie=utf-8&oe=utf-8&client=firefox-a&rls=org.mozilla:en-US:official Many websites here that can help you -- especi...

19 years ago

what is the definition for bimary form in music???????????????????????????? If you truly mean <b>bimary</b>, here are the results I got when I searched in Google: http://www.google.com/search?q=music+bimary+form&start=0&ie=utf-8&oe=utf-8&client=firefox-a&...

19 years ago

A certain football league has the following scoring system: - each field goal counts for 5 points - each touchdown counts for 3 points The only way to score points is with some combination of field goals and touchdowns. They have noticed that not every sc...

19 years ago

How do I make NH3 to NH4? How would write an ionic equation? Can you show me how to do it? Thank you so much! NH3 + CuSO4 -> NH3 adds a hydrogen ion (from HCl or another source of H^+) to become NH4^+. There is no such animal as NH4 as a neutral material....

18 years ago

A 17.0 kg monkey hangs from a cord suspended from the ceiling of an elevator. The cord can withstand a tension of 220N and breaks as the elevator accelerates. What was the elevator's minimum acceleration (magnintude and direction)? Please show me how to d...

18 years ago

this is the question we have for my software application class... To explain why commonality is important, pcmag reminds us how the 2000 Presidential election was affected by apparently confusing punch cards in Florida. In that scenario, the interaction o...

18 years ago

Can you give me a breif 2 page summary of all the physical features of Africa Kelly , we don't do your homework for you. Here are sites that will give you good information. http://library.thinkquest.org/16645/overview.shtml http://www.mapsofworld.com/phys...

18 years ago

What is an enigma? I think something that's an enigma is very complicated, but I'm not sure. An enigma is mysterious and puzzling. Check this dictionary site for more information. http://dictionary.reference.com/browse/enigma For each word, write a senten...

18 years ago

Does milk contain all the macronutrients necessary in the human diet? Yes, for a normal human. What milk does not have, the body can make from what milk has. There are eight essential saccarides: Glucose Galactose Mannose Xylose Fucose (NOT fructose) N-ac...

18 years ago

Why is milk vitamin fortified? What disease might this prevent? Pasteurizing milk destroys many vitamins. The have to be re added. One of the added vitamins, Vitamin D, prevents Rickets. What happens when the pH of milk is adjusted to 4.7?

18 years ago

How many types of amino acids are there in milk?

18 years ago

Why does protein stain yellow in ninhydrin?

18 years ago

The freezing point of benzene is 5.5°C. What is the freezing point of a solution of 8.50 g of naphthalene (C10H8) in 425 g of benzene (Kf of benzene = 4.90°C/m)? I worked this problem for someone just a couple of days ago. delta T = k_f m k<sub>...

18 years ago

Which solution has the lower freezing point? 90.0 g CH3OH in 100. g H2O 180.0 g CH3CH2OH in 200. g H2O I have worked this problem for someone within the last 3-4 days. delta T = k_f m k_f is not needed for this problem. change 90 g CH3...

18 years ago

I need to know which way aggregate demand (AD) shifts according to scenarios and why: 1) Economic booms in both Japan and Europe result in massive increases in orders for exported goods from the United States. 2) As part of its countercylical policy, the...

18 years ago

How does friction affect the mechanical advantage of a machine? It lowers it

18 years ago

Name a compound machine and tell what simple machine it contains? pencil sharpiner wedge and wheel and axle

18 years ago

Identifying cost flows in process cost system

18 years ago

We are having a science test soon and there is a question on the studie guide that I am not sure about. What is the differance between Michanical advantage and Ideal Michanical advantage? Isnt it frictions. Yep you are right it is friction

18 years ago

Evaluate. (15 – 5) ÷ [(12 ÷ 2 • 2) – 2] I think the answer is 10. Is this correct. Correct. Please Excuse My Dear Aunt Sally applies.

18 years ago

Determine whether the sequence A(n)=nsinn/n^3 converges or diverges. Eplain why it does or does not converge. It is converges find the limit

18 years ago

find the equation for an ellipse that satisfies the following condition Vertices at (-3,1) and (9,1) one focus at (7,1) I will assume you know the general equation of an ellipse and its properties in terms of a,b and c. the centre would be the midpoint of...

18 years ago

I have to do a project and I can't get motivated to start!! I want a good grade, but I don't know how to convince myself to get started!! PLEASE HELP!!!!!!! Sometimes motivation just doesn't come. You can't wait until you feel like doing it. I urge you to...

18 years ago

state the number of electrons either lost or gained in forming each ion. Br- As3-

18 years ago

1.If a particle moves in a plane so that its position is described by the functions x=A*cos(wT) and y=A*sin(wT), the particle is ( w-angular velocity, T-period) A) moving with constant speed along a circle B) moving with a varying speed along a circle Tha...

18 years ago

Let g be the acceleration due to gravity at the surface of a planet of radius R. Which of the following is a dimensionally correct formula for the minimum kinetic energy K that a projectile of mass m must have at the planet's surface if the projectile is...

18 years ago

Please help... Let g be the acceleration due to gravity at the surface of a planet of radius R. Which of the following is a dimensionally correct formula for the minimum kinetic energy K that a projectile of mass m must have at the planet's surface if the...

18 years ago

whats the domain and range of sine and tan? The sine ranges from -1 to +1. Its domain is all postive and negative numbers. I will be happy to critique your thinking on tangent.

18 years ago

Under what situation(s) can a single environment be both coarse-grained and fine-grained. I was thinking in an envirnomental where many organisms exist, such as a field. To a herbivorous insect, it would be course-grained while to a cow or horse it would...

18 years ago

We were asked to solve the problem 1/x < 4. I solved it like so: 1<4x 1/4<x and wrote my answer in interval notation as (1/4, infinity). However, the answer in the back of my book said the answer was the union between (negative infinity, 0) and (1/4, infi...

18 years ago

Can someone help me translate this sentence? It was in a packet we were given for reading but I don't think I'm understanding it correctly. La crisis del Imperio Romano facilitó la invasión de España a partir del año 409 d.C., por varios pueblos "bárbaros...

18 years ago

What is the difference between a simple colony and a complex colony?

18 years ago

What type of tissue are neurons?

18 years ago

conic sections prove that the line x-2y+10=0 touches the ellipse 9x^2+64y^2=576 show that the equation of the normal to the ellipse x^2/a^2 + y^2/b^2 = 1 at the point (a cos theta, b sin theta ) is ax sin theta - by cos theta - (a^2-b^2) sin theta cos the...

17 years ago

the line y=x-c touches the ellipse 9x^2 + 16y^2 = 144. Find the value of c and the coordinate of the point of contact. a parallelogram is defined by two sets of tangents to the curve x^2 - 4y^2 = 9. The gradients of the tangents are 1 and -1. Find the are...

17 years ago

find the equations of the circles which pass through the points (0,2) and (0,8), and which also touches the x-axis.

17 years ago

if the tangent of two intersecting circles, at their points of intersection are perpendicular, the circles are said to be orthogonal. Show that the circles x^2+y^2-6x+4y+2=0 and x^2+y^2+8x+2y-22=0 are orthogonal. find the equation of the tangent to the el...

17 years ago

what is the equation of the circle whose centre lies on the line x-2y+2=0 and which touches the positive axes.

17 years ago

Conic sections A circle passes through points A(-5,2), B(-3,-4) and C(1,8). Find the coordinate of the point of intersection of the perpendicular bisectors of AB and BC. What is the equation of the circle?

17 years ago

conic sections question 1: verify that the point (3,2) lies on the circle x^2+y^2-8x+2y+7=0, and find the equation of the tangent at this point. question 2: find the length of the tangents from the point (5,7) to the circle x^2+y^2-4x-6y+9=0 question 3: f...

17 years ago

Conic Sections- A point moves so that its distance from the origin is twice its distance from the point (3,0). Show that the locus is a circle, and find its centre and radius.

17 years ago

We were given a worksheet on modifying functions with the equation y=Af(Bx+C)+D. The first function we're given is y1=f(x)= x + x^2 and we're supposed to graph it. Then we're told to graph y2=2f(x), and we're given instructions on how to enter it [y2=2 ->...

18 years ago

Find an expression for the function whose graph is the given curve. a) The bottom half of the parabola x+(y-1)^2=0 b) The top half of the circle (x-1)^2 + y^2= 0 I think I have a vague idea of what I need to have in my expression for b; I know it's a circ...

18 years ago

We're learning about different kinds of functions and I don't really understand the difference between rational and algebraic functions. I know that rational functions are functions that are a ratio of two polynomials, and algebraic functions are any func...

18 years ago

My son is in third grade. He is suppose to make a place value chart for homework. He can't explain to me what he needs to do. He said at the bottom has to be ones tens hundreds thousands and then he needs to cut squares out. Any ideas?

18 years ago

2. On a job interview for a position as a pharmacy technician, the interviewer asks you what a dosage form of medication is. You respond that a dosage form is A. the way a medication is given. B. the use of a medication, either locally or systemically. C....

15 years ago

my daughter is working on a math problem called factor capture have any idea as to the rules for understanding it

18 years ago

why do you use water in calorimeters?

18 years ago

A skier of mass 70 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to pull him 60m up a 30 degree slope (assumed frictionless) at a constant speed of 2.0 m/s? (b) What power must a motor have to perform this task?

18 years ago

A 50.0-kg student climbs a 5.00-m-long rope and stops at the top. (a) What must her average speed be in order to match the power output of a 200 W light bulb? (b) How much work does she do?

18 years ago

How do you say "ruins" in spanish [by ruins I mean the ancient Roman ruins, the physical ruings of great buildings, not "collapse"] ? I haven't been able to find a good spanish translation.

18 years ago

There are three landscapers that are instructed to prune a tree. One of them alone can complete the task in 30 minutes, another is twice as fast as the first landscaper, and the thrid is a quarter as fast as the first two landscapers working together. Det...

18 years ago

What is the longitude and latitude of the Kuwait Towers?

17 years ago

I'm having a rough time understanding this assignment. Can someone explain it to me in a way that I might be able to understand it more clearly? Submit a response recommendation analysis of 200-300 words of how large firms and small firms could utilize ch...

17 years ago

Solve the equation on the interval [ 0, 2 pi] (tan x + ?3)(2cos x + 1) = 0

17 years ago

How would I go about solving this equation on the interval [0,2pi] cos^2 + 2 cos x + 1 = 0

17 years ago

Use the given information to find the cos (2,0), csc q = 5/3, q lies in n quadrant II How would I go about doing this

17 years ago

Determine whether the given orderd pair is a solution of the system ( -2, 1) X/3

17 years ago

Write the form of the partial fraction decomposition of the rational expression. It is not necessary to solve for the constants: 4x + 1/(x + 6)(x - 5) I came up with A/x + 6 + B/x - 5

17 years ago

Write a formuls for the general term(nth term) of the arithmetic sequence. Do not use a recursion formula. Then use the formula for A to the n to find the indicated term of the sequence find a11: 12, 10, 8,...

17 years ago

How many 2-digit numbers can be formed using the digits 1,2,3,4,5,6,7,8,9 and 0? No digit can be used more than once

17 years ago

A piecewise function is given. Use the function to find the indicated limits, or state that a limit does not exist. (a) lim is over x-->d – f(x), (b) lim is over x-->d + f(x), and (c) lim is over x-->d f(x) x^2 - 5 if x < 0 f(x)= -2 if x ->0 ; d = -3 1. (...

17 years ago

Find the slope of the tangent line to the graph of f at any given point f(x) = -2x + 6 at (2,2)

17 years ago

The derivative of f of x f(x) = x^3 + 19 ; x = 8

17 years ago

If the continents were drawn on a Mercator map, would your chances of finding a fit have been improved? Explain.

17 years ago

Complete the identify sin(a + b)cos b - cos(a + b)sin b

17 years ago

Find the derivative of f 0f x. f(x) = x^2 - 8x - 17 at x = 4

17 years ago

Is thsi a solution of an ordered pair (4, -1) 4x = -17 - y 2x = -12 -4y I say yes ? Is this how you do it. 4(4) = -17 - -1 = 2(4) = -12 - 4(-1)

17 years ago

I need some ideas on a story about a Christmas Tree. A short and simple idea would be great!

17 years ago

What are the main landforms in New England and the bodies of water that surround and run through New England?

17 years ago

I have to write a report for school on the topic of film music. I want to show my class mates how different you feel when you see a movie scene with two different musics. So I was looking for two versions of a scene of any movie. One version should be wit...

17 years ago

So, I need zo post my question again... I have to write a report for school on the topic of film music. I want to show my class mates how different you feel when you see a movie scene with two different musics. So I was looking for two versions of a scene...

17 years ago

can anyone please explain to me how to simplify this exponential expression??I got no idea...THANKS A LOT! [(-8x^6)/(y^-6)]^2/3

17 years ago

Ann is driving down a street at 58 km/h. Suddenly a child runs into the street. If it takes Ann .71 s to react and apply the brakes, how far will she have moved before she begins to slow down? Answer in units of m. When I converted 58km/h I got 16.111 m/s...

17 years ago

Find the rate 392ft/ 8 sec

17 years ago

Approximately 5 out of every 10 students at Kendra's college live on campus. The college has 5,000 students. How many of them live on campus? Set up a proportion.

17 years ago

Rewrite the statement, using percent notation. Of 50 houses in a development, 20 are sold.

17 years ago

how do u factor out 2x^3 - 5x - 3

17 years ago

you have three jugs and a river of water. The jugs are known to hold exactly 3, 7, and 10 liters. How can you use these jugs to measure exactly 5 liters of water?

17 years ago

Why did the Romans invade Palestine in the time of Jesus?

17 years ago

An electron is moving through a magnetic field whose magnitude is 8.70*10^-4 T. The electron experiences only a magnetic force and has an acceleration of magnitude 3.50*10^14 m/s^2. At a certain instant, it has a speed of 6.80*10^6m/s. Determine the angle...

17 years ago

An ionized helium atom has a mass of 6.6*10^-27kg and a speed of 4.4*10^5 m/s. The atom moves perpendicular to a 0.75-T magnetic field on a circular path of radius 0.012m. Determine whether the charge of the ionized helium atom is +e or +2e. Can anyone pl...

17 years ago

I have a problem about complex number. Let z=7e^(7*pi*i/4) . Write z, z^4, z^7, z^(-2) in the form a + b i I have no idea how to do it. Any hints will be appreciated.

17 years ago

How are series and parallel circuits wired?

17 years ago

In To Kill a Mockingbird why does Helen Robinson fall down when Atticus drives up to her house?

17 years ago

A----is a reptile named for sound it makes when threatened.

17 years ago

Ugh...I put red giant on my final but everyone else put white dwarf. Can you tell me which is correct. Please and thanks. :) What is brighter a red giant or a white dwarf and why? Thanks <3

17 years ago

name the 2 digit multiple of 8 who digits add up to 10

17 years ago

I've actually cleaned up my translation a bit, so it reads more like: The collapse of the Roman empire facilitations the invasion of Spain from 409 d.C... but I'm still having trouble with the second half.

18 years ago

*facilitated

18 years ago

THANK YOU SO MUCH....I have thought for days to this and it just wasn't clicking to me... thanks so much

18 years ago

I keep getting a number that is very large for (a). Is mg 70kg * 9.81?

18 years ago

My options are -1/2 sqrt2 + sqrt2 1/2 sqrt2 + sqrt-2 -1/2 sqrt2 - sqrt2 1/2 sqrt2 + sqrt2

17 years ago

(tan x + sqrt 3)(2 cos x + 1)=0

17 years ago

Thanks I'm sorry for not being more specific I'm new to this site. Thanks for your help.

17 years ago

Muliple choice questions I have 4 options answers. 1. pi/4, 7pi/4 2. pi/2, 3pi/2 3. pi 4. 2pi What formula do I use ?

17 years ago

Thank you , I was forgetting to multiply by cos 110

17 years ago

thanks

17 years ago

cosine ( x,y) csc(theta,or angle)I don't have a theta symbol om my keyboard and they use that interchangable in my book

17 years ago

oh ok sorry I'll try to be more specific

17 years ago

I don't know what I mean I'm very confused , just disregard intil I cn puit more info in there

17 years ago

Try and draw it out The pythagorean theorm says a^2 + b^2 = c^2 15.5^2 + 14^2 = c^2

17 years ago

This is how I would do it. Pythagorean theorem: a2 + b2 = c2. a^2 + 4^2 = 11^2 a^2 +16 = 105 subtract both sides by 16 a^2 - 16 = 105 - 16 a^2 = 105 a = sqrt 105 a = 10.247

17 years ago

I was thinking clearly, silly mistake that's for sure , thanks

17 years ago

yes, thanks just like to check my answers

17 years ago

thanks that's what I had I just wasn't sure if -2 + y = -3 (-2,-1) if I multipied -2(-2, -1)

17 years ago

makes no sense that's how i was doing it and I came up with 3.5 a11 = 12 + 10(.8444) = 3.5 however the answers to choose from are .32 -8 -10 .34

17 years ago

f(x) = x^2 - 8x - 17 at x = 4 I came up with 8 ?

17 years ago

Thanks looks like I forgot to subtract 8

17 years ago

Hey GuruBlue Well, I've been on the webside. But there are just film reviews and so you mean I should buy the two DVDs? Well actually I have been looking for a scene of a movie just with two different musics... I also like your idea, but have you maybe a...

17 years ago

Well, yeah that's an option. The only problem is that I really don't live at all near a video rental shop. So that's a problem... Maybe someone else got an idea... But I'll see what I can do. Thanks for your suggestion.

17 years ago

Thanks SraJMcGin. Well I have been on your links. The first one istn't really what I am looking for. I mean I wanted to have the same scene with to different music versions. The secound is better. But the thing is that in that scene you only got the new m...

17 years ago

Thank you so much

17 years ago

Ok is this always how we find rhe rate of something

17 years ago

The ratio of 7 dimes to 3 quarters= 70 and 75 common factor of 5. So I can divide both numbers by 5 to get a ratio that means exactly the same thing as 70 to 75. This ratio will be 14 to 15

17 years ago

What is leryec unscrambled?

17 years ago

cause there's one driver? duh

17 years ago

Hahahahahahahahhaha, UOP. Me too.

17 years ago

What are the parts of the battery and the function for each?

17 years ago

can u please name the constraits

16 years ago

It was the start of a new paragraph; the sentence concluding the previous paragraph was: "The addition of this phrase added an entirely new dimension to Darwin's work; even though Darwin added this new descriptive term to further clarify the original titl...

16 years ago

i really don't understand about atp, adp,nadp plus, cellular respiration, and photosynthesis. can you tell me what happens with them all?

16 years ago

This speech is full of bias, fallacies and rhetorical devices. From the very start of this speech, Kane uses bias against the governor Jim W. Gettys. The campaigner says “rid the politics of this state of the evil domination of Boss Jim Gettys.” This is s...

16 years ago

is it 24/6?

16 years ago

i argree with him or her V V V

16 years ago

what about NaOH+NO ?

16 years ago

i don't know why it's not posting Oo

16 years ago

Thats easy just look up the water cycle. Theres heaps about it on the net.

16 years ago

by the way i realized i could just graph the two equations... were a = .20 Vo = 5.494 but how do I write it for t3

16 years ago

The title of the book is essentials of sociology david brinkerhoff. Define and then apply the metaphor “A Path in the Snow” to the social pattern of Sexuality in the U.S Please help me THANK U SO MUCH :)

16 years ago

You did, but i failed to find any information that answers the question I have. I still don't understand what the metaphor means, had i known this I would be able to tie it back to sexuality.

16 years ago

1234 1324 1432 1243 1423 1342 2134 2143 2341 2314 2431 2413 3124 3142 3241 3214 3412 3421 4321 4312 4123 4132 4231 4213 24 there are 4 numbers...each can be used only once but 6 different ways 6x4=24

16 years ago

OHHHH !!! okaay thanks !

16 years ago

what was the prinipal reasontaht the second continental congress selected georgia washington to head army in 1775?

16 years ago

why did they choose georgis washington to head the army in 1775?

16 years ago

do you know anything about georgia washington?

16 years ago

That link split up by spaces is the figure (if you take the spaces out) that goes with the experiment.

16 years ago

Thank you so much for explaining.

15 years ago

Yes, I did notice that as well. I just didn't know the name of that pattern, is it a trailiing pattern?

15 years ago

No, I am not sure. The exact diagram looks like this O O O O O The circles are to be filled in with the numbers given. The possible multiple choice answers given are: A) 7, 8, and 9 B) 7, 9, and 11 C) 9, 10, and 11 D) 8, 9, and 10

15 years ago

I still don't understand? Also the two verticle circles are actually under the second horizontal circle, not the first. For some reason it didn't post like that. (I don't know if that makes a difference or not) What I don't think I understand are the purp...

15 years ago

A) 56,080 B) 54,290 C) 4828 D) 3585 Those are the possible choices. I don't understand how to find base ten?

15 years ago

Oh okay. I see. Thank you!

15 years ago

Oh I had it backwards, thank you Reiny for your help with all my questions.

15 years ago

I am so bad with ratios. I understand their pupose, I just don't understand how to solve them. Thank you again.

15 years ago

Where are you getting your fractions from? Are you doing 2 yellow cars over 4 tan cars?

15 years ago

Thought so, just wanted to check. Thank you.

15 years ago

Yes, they look like that. Does that change the sequence?

15 years ago

Yes, that is what I got. Thank you!

15 years ago

The verticle circles are below the middle horizontal circle.

15 years ago

Thank you both!

15 years ago

thank you^^

15 years ago

Sorry can you please check the grammar.

15 years ago

Is it also because it may vary exactly how many million people live in a country, so taking the average per person is a lot easier to compare than average per country?

15 years ago

Oh yeah, I forgot about that! Per person definitely puts it in a more personal perspective. I just wasn't sure if this question is looking for a more common sense or mathematical answer.

15 years ago

I'd like to learn this. How did you get 15/8. Did you multiply 5 by 3 to get that?

15 years ago

that's cool. Thanks

15 years ago

Hello there, A map can help you by showing you the exact location of something. By having road names, rivers, mountians and more! I hope this helped! -Kelly

15 years ago

Nope! Cartoon... the a is short C-A-R the A is short Otherwise it would say it's name like B-A-K-E The O is short to! OOOO You want it to say it's name for it to be a lONG vowel. Like the word O-A-T

15 years ago

1+2+3+4=10 plants

15 years ago

side 1= 3x side 2= x side 3= x+7 3x + x + x+7 = 62 5x = 55 x=11 side 1= 3(11) = 33 side 2= (11) = 11 side 3= (11)+7 = 18

15 years ago

you do: 1/2mv(initial)^2+mgh=1/2mv(final)^2 so simplify that to : v(inital)= sqrt(v(final)^2-2gh) For b): 1/2mv(initial)^2=mgh solve for h : h=v^2/2g then add your original height to the new height for your answer

15 years ago

for simplicity i am going to do this symbolically. m = .47Kg l = 1.2m g = 9.81m/s² è = 31 degrees the change in potential energy is mgÄh in this problem, Äh = l-lCos(è) = l(1-cosè) (it is 1-cosè becaus cos 90=1.. and its cos 90-cosè) so ÄE = mgÄh = .47Kg...

15 years ago

mgh* cos theta* sorry

15 years ago

also Deta E*

15 years ago

Delta* wow i cannot type

15 years ago

A) ( 1/2 )kx^2 = ( 1/2 )mv^2 so.. k=mv^2/x^2 (make sure you convert 5.7cm to meters first.) B) ( 1/2 )kx^2=(1/2)mv^2 so... v^2=kx^2/m solve for v.

15 years ago

Hi I have the same question. The first part is correct to find the maximum height, but while solving for the quadratic formula to find the velocity when it hits the ground, the answer is incorrect. (You would get 7.2749 and -0.27492 after solving the quad...

15 years ago

Nevermind! I figured out you're supposed the plug the positive value into the derivative v'(t).

15 years ago

Thanks! i was so close to that equation i just wasn't moving my total mass to the left side.

15 years ago

i agree with that but how would you find the kinetic energy acquired by the nail after you get these numbers?

15 years ago

3.8 m/s for the hammer*

15 years ago

got it v=[(2*m1)/(m1+m2)]Vo then take your answer and insert into 1/2mv^2 and divide by 1000

15 years ago

Sorry, I don't understand your reply... This question has a prime after the f by the way. It's f prime, aka the derivative. That's why the function is decreasing.

15 years ago

how do I rewrite it as a single logarithm

15 years ago

no you already lost me

15 years ago

Thank you so much for your help, for the following question i am getting wrong answers answell. for the first one i got 42.7 and the 2nd I got 19.8. Could you help? Thank you for help in advance 4Cr(s) = 3O_2(g) -> 2Cr_2O_3(s) 2Cr(s)+O_2(g)->2SrO(s)

15 years ago

81.9 degrees

15 years ago

$150 + $120 = $15x $270=$15x 270/15=18 trips

14 years ago

If the original variance is 9 than the standard deviation is 3. George's score of 70 is 5 standard deviations from the mean (70-55=15/3=5). Then if the mean is moved to 70 we need to add 5 standard deviations to is (5 x 5 = 25) so his new score is 95.

14 years ago

Nothin. I just have to search about what Moral aspect of the Justice and I am having hard time with it.

14 years ago

Thanks you guys!

14 years ago

This is the question...is it possible and why?

14 years ago

And yes this is College Algebra...some of us are better at things other than math. I'm doing great after being graduated for 17 years, a 9 year old, a husband and a full time job. I'm loving my A average thank you.

14 years ago

The first four relate, but i'm not sure how the last two relate

14 years ago

You take the fact that vi=0, vf=x, delta t=5.5 and a=3.1 i think you use the formula vf=vi + a delta t to find your answer

14 years ago

X = 93 360-86-93-88

14 years ago

X = -3,-2,-1,0,1,2,3,4,5 OR ALL OF THE WHOLE NUMBERS GREATER THAN -3 BUT LESS THAN 6

14 years ago