f(x) = 1/(x+7)+15/(x8). Find all a for which f(a)=f(a+15). I understand this so far f(a)=f(a+15) 1/(7+a) + 15/(a8) = 1/(a+22) + 15/(a+7) I have multiplied the LCD of (a8)(a+7)(a+22)by both sides with no luck. This is a multiple choice question
100,518 results
math 3rd grade
How can you use 4x7 to find 8x7? find the product. I don't understand this how can i expect my 3rd grader to understand.

Geometry
Given IE is congruent to GH, EF is congruent to HF. F is the midpoint of GÌ. Prove the triangles EFI is congruent to HFG. . Can you please help me to understand how to do this problem? I don't understand how to find a proof. Thank you so much for your

LA
In "All Together Now," Jordan uses appeals to emotion and appeals to reason to try to persuade her readers that her views are important. In a paragraph, cite one example of each kind of appeal in her work. Then, explain whether you find Jordan's appeals

Math
I am taking the Using Tables, Rules, and Graphs quiz part 2, and I dont understand these two problems. 1. Use the function rule to complete the table: 10x+y=y Above it shows a graph, with x and y marked, then along the top it goes 2, 1, 0, 1, 2 I don't

Physics
A roller coaster cart travelling due north at 20m/s that turns left during an interval of 4.0s without changing speed. Find the average acceleration. I understand the mathematics behind it (using pythagoras's theorem to find velocity and the formula

Physics
Holding a glass of water filled to a depth of 7.8 cm you step into an elevator. The elevator moves upward with constant acceleration, increasing its speed from zero to 2.2 m/s in 3.1 s. Find the change in pressure exerted on the bottom of the glass during

Child Development
I need help with find three websites that help families understand how young children develop and learn. Web sites must contain articles that help families understand the development and learning of 3 to 5 years old.

english
Please help me ive been trying to figure this out, but I DO NOT understand it...I do not understand what an embedded sentence is We have to find the embedded sentences in: I deplore the fact that bats have wings. That Guinevere loves Lorian is known to all

please help with geometry  dilation
When a square of area 4 is dilated by a scale factor of k, we obtain a square of area 9. Find the sum of all possible values of k. I do not understand...it is not 3/2, as I was told, but I don't understand why? Help?

History
Read the sentence. The printing press helped people to ___________. Which option correctly completes the sentence? find employment hand copying books from Latin to native languages understand their religion by reading affordable printed Bibles learn and

history
I don't understand this question: the removal of general mcclellan represents a loss of the army and the potomac and a victory for the interfering politicans in washington (validate) i know that mcclellan was replaced by grant because he was to hesitant to

Calculus
Can someone explain the method of implicit differentiation to me. I know that we differentiation both sides of the equation with respect to x (I don't understand what they mean by with respect to x). And then y is a function of x...I don't understand what

ethics in management
I am trying to answer some question for class I am needing to find and understand these theories can someone please explain them or help me find information on them I cannot find anything that I understand searching for these terms are they called some

To Jasmine20  FOILing
Try this website to learn about FOILing better: Go to Google and type in "FOIL" Click the first option (it starts with algebra.help........) If you can't find the exact website, just look through Google to find a lesson on FOILing. I think that one should

Math
I know I posted this yesterday but I really do not understand this and I did not quite understand the comment on what to do. Find the real solutions of the equation. x = 2 sqrt6x36

about Engineering
Electronic and Communication Engineering is mainly Mathematical analysis, implemented in practical circuits. You have to understand higher forms of math, and think in those terms. You have to understand the imperfect models used for systems analysis. You

math
ok so I asked a question like this before and I understood how to do it and a cuple more like it but now I don't understand how to do this on ..... I keep on trying to find the answer but I just don't understand what I am supposed to do 5(2w+1)=25

English
Gurublue and Writeacher tried to explain to me foil but I didn't understand and I unfortunetly still do not. I need to find the characterisitcs that are being brought out in Julius Ceaser [II.I]between Ligarus and Brutus. I don't understand. I know many

PreAlgebra
Hi, Well, I have a test tomorrow and I was hoping that's someone could maybe help me? I don't understand probability... Here's a question I don't understand: Find the probability of tossing three coins and getting only two tails. Can anyone help?

calculus
suppose x S f(t) dt= x^2  2x + 1. Find f(x). 1 S = integral and 1 = lower level, x = upper i don't understand what i'm supposed to find/what to do

Chemistry
Find the mass of water (H2O) needed to react with 150 grams of potassium (K) 2K(s) + 2 H2O (g)2KOH +H2(g) How do I get the number of moles in H2O? Desperate to understand this. I got K= 150g./39.0983=3.84 mols of K. Then would it be 3.84(2mols H2O/7.68)

To DrBob222
Can you please explain thoroughly to me about all this. Why do we criss cross the formulas of compounds? How do we find out which combining capacity to use if there are more than one? Is there a special formula we use to find out or something? I really do

math
suppose x S f(t) dt= x^2  2x + 1. Find f(x). 1 S = integral and 1 = lower level, x = upper i don't understand what i'm supposed to find/what to do and i didn't make any typos.

business ethics
I am trying to answer some question for class I am needing to find and understand these theories can someone please explain them or help me find information on them I cannot find anything that I understand searching for these terms are they called some

business
I am trying to answer some question for class I am needing to find and understand these theories can someone please explain them or help me find information on them I cannot find anything that I understand searching for these terms are they called some

math
how do i find the continuity f(x) = 1. Need an example to help understand. Cannot understand from my notes. I get the concept but don't understand how to find the continuity...

math
Hi, What does it mean to find the 5% trimmed mean of a set of data? I understand what it means to find the 10%, butI don't understand how to calculate the mean if its trimmed 5%.

chemistry
I need help with the equilibrium constant, i understand it but I don't understand the last step when you have to change or find the exponent?

English
I can't understand the whole thing that he said. (What is the meaning of the sentence? 1. I can't understand what he said at all. 2. I can't understand some(?) of what he said. 3. I cann understand almost all the things that he said, but not all.)

Math(Please help)
I know I posted this yesterday but I really do not understand this and I did not quite understand the comment on what to do. Find the real solutions of the equation. x = 2 sqrt6x36

Help needed PreCalc
Please help me understand how to solve this questions. I need step by step solution and answer because I find it difficult to understand when someone on here writes the answer instead of showing step by step work on how he/she got the numbers to get the

Math (Calculus)
Find the length of the curve. You may use your calculator. f(x)=x^(1/3)+x^(2/3) [0,2] I understand that the function needs to be written as x in terms of y because there's a vertical tangent at x=0, but I don't understand how to go about the problem other

math precalculus
Can someone help me with this problem please? Thankyou to those who helped me with the previous ones and I understand those. But, I tried this one and I don't understand it. Use the information given about the angle Ɵ to find the exact value of: sin 2Ɵ.

Calculus
Find the intervals where the function f(x)=((2x1)^2)(x3)^2 is concave up and concave down and find all inflection points. Give decimal answers using two decimal place accuracy. Please help me!!! I really don't understand! and please show your work so

English
Discuss any areas related to citing sources that you find confusing or difficult understand or apply. In your responses to others offer suggestions to help understand the issue.

calculus
I don't quite understand Cartesian equations. I am told to Eliminate the parameter to find a cartesian equation of the curve. X= 3  4t, y= 2  3t there is no inequality I don't understand what I am trying to find.

Geometry
Line MP bisects

Pre calculus
A tugboat is traveling at 30 miles per hour at a compass heading of 38 degrees. The current is from the direction of 125 degrees moving at 7 mph. Find the resultant speed and the direction of the boat. I understand the concept and that I must use the law

Math
Im sorry for bombarding you guys with questions. I've only needed help with 3 of 40 so far.. Anyways, moving on! 3! = 3 * 2 * 1 4! = 4 * 3 * 2 * 1 5! = 5 * 4 * 3 * 2 * 1 30! = 2^x * N where N is odd. What is the value of x? I have no idea where to start,

math
HELP! I have a question , and i need it to be where i can understand it. why is a number, any number, is 1 when raised to the 0 power. i need it for an assessment. and i can't find a site that explains anything to me to where i can understand it enough to

Calculus
Determine if function is even, odd, or neither... f(x) = secx tanx I understand how to find if its even or odd, but the sec and tan, I don't understand. Can someone help?

Helpplease.civics
hi! I'm doing research about the Muslim rebellion in the southern Philippines.. but the websites I keep finding I don't understand the information. Could anyone help me find websites which are easy to understand? thanks. I have to know the who, when,

probability and statistics.
So here I am trying to do my prob/stat homework and I keep coming across this word that I don't understand. The word is "inferior". My book has no glossary and I cannot find a definition that makes sense.Can somebody help me understand?

Inverese of one to one function
I don't understand how to find the inverese of a one to one function. Find the inverese of the one to one function. 9. f(x)=4x+7 Is the inverese suppose to be f^1(x)=x7/4? 12. f(x)= square root of x8 I don't understand how to find the inverese on this

Math
I am having trouble understanding how to reduce fractions to its lowest term... All I can understand is I have to find the lowest number that will divide into both numerator and denominator. How do I understand the solution on how to reduce fractions to

Calculus
I know how to find the interval of convergence, but I don't understand when to check for convergence at the endpoints (to see if I should include it or not) Could someone help me understand this? Thanks!

Physics
At t = 0, an automobile traveling north begins to make a turn. It follows onequarter of the arc of a circle of radius 10.1 m until, at t = 1.52 s, it is traveling east. The car does not alter its speed during the turn. (a) Find the car's speed. (b) Find

Math
Can someone help me understand what these are? I know that it has something to do with a negative number, but I can't seem to understand them! Ms. Sue or Writeacher PLZ HELP ME UNDERSTAND THEM!!

College Math II
Solve the problem. If a manufacturer charges q dollars each for footballs, then he can sell 3000 – 150q footballs per week. Find the polynomial R(q) that represents the revenue for one week. Find the weekly revenue if the price is $8 for each football. I

Math
I am in Calculus and am currently learning how to find the Area of a Surface of Revolution. I cannot understand what the surface of revolution (whether it's the xaxis, yaxis, or y=6) is. For example, I had a problem saying to use the washer method to

physics
A 1.31 g samara  the winged fruit of a maple tree  falls toward the ground with a constant speed of 1.0 m/s (Figure 529). I understand that acceleration equals zero, but I don't understand how to find the upward force need to keep the fruit at 1.0

Physics
A 1340kg car traveling east at 13.6 m/s (20 mi/h) has a headon collision with a 1930kg car traveling west at 20.5 m/s (30 mi/h). If the collision time is 0.10 s, what is the force needed to restrain a 68kg person in the smaller car? In the larger car?

Algebra 2 Honors
Hey, we recently started a topic in class that I don't understand well, I just want to post 6 of the problems and ask if they're right or not (some of them I have no idea how to do). 1. If a varies directly as b and b = 18 when a = 27, find a when b = 10.

Calculus
OK I understand the concept present value but I don't understand how to solve for present value in this context: Assume that you won a local contest for which you gain a continuous income stream at a rate R(t)=5000e^0.1t per year for 5 years and r=0.05.

Geometry  Transformations and Dilations
When a square of area 4 is dilated by a scale factor of k, we obtain a square of area 9. Find the sum of all possible values of k. I do not understand...it is not 3/2, as I was told, but I don't understand why? Help?

Algebra
who ever will help me I do not understand this problem? Solve each exponential. Give the exact value of x 6^x = 1/36 3^x = 8 I really do not understand at all I have not taken algebra since 8th grade and went back to school at 67, Thank you if you wish to

Chem Urgency
Can you explain what the pseudogas configuration is? I have the definition but I still don't understand. I have the example.. Sn([Kr] 5s24d105p2) Sn4+ ([Kr]4d10)+4e I understand the first part but I don't understand the second.

College Math II
Solve each problem. Find the quotient and remainder when x^2 – 5x + 9 is divided by x – 3. I don't understand how to divide and solve this problem. Can someone help me understand the steps on how to do it. Thanks.

English
Which sentence contains a predicate noun? A. The walk through the tunnel was eerie. B. I bought my mom a cookbook for her birthday. C. My dog is a master of the household. D. The ground is very uneven. I think it's A or B. Could you provide me with help

algebra
Find the standard form for the equation of a circle (x−h)^2+(y−k)^2=r^2 with a diameter that has endpoints (−8,−10) and (5,−4). Find the h= 1.5 k= 7 r=? I do not understand how to find the radius.

More algebraplease help!
Here are some more questions I'm having trouble with. Please walk me through them so I can fully understand them. #2: Let A be (5,9), B be (3,5), and C be (1,1). The median of a triangle connects a vertex of a triangle to the midpoint of the opposite

Psychology
How have you used the scientific process (unsystematic observation, building theories, and evaluating propositions) in your life to better understand your personality? Provide an example in your response. What does this question mean? I don't understand

math
I'm having issues with understanding exactly how Expected Values work, I understand what they are, just not how to get them in all cases. One of the problems I'm having trouble is involves two teams that play a series of games and ends when one of them has

Physics, still don't get it!
I'm sorry bobpursley I don't understand your response, please clarify. When an object of mass m1 is hung on a vertical spring and set into vertical simple harmonic motion, its frequency is 12 Hz. When another object of mass m2 is hung on the spring along

trustee government
hi where can i find more information about trustees that play a role in the congress. i already know the basic definition but i need to know what they do when it comes to the congress. do they hold property in the government or something Please post the

Calculus
The velocity of an object is given by v(t)=t(t^21)^(1/3) feet per second. Find the total number of feet traveled by the object in the time interval [0,3] seconds. I understand how to solve the problem, but I do not understand why is the interval now from

Chemistry
Find the pH: 1) A 0.001M solution of HCl 2) A 7.98 x 10^2 M solution of HNO3 3) 1098L of a solution containing 8.543moles of HBr 4) 120mL of a solution containing 0.005 grams of hydrochloric acid. Please help me with these four. Out of 20 questions i only

English/Government
Hi, I am stuck on a assignment for class. I have to write a social policy paper. I have to find a piece of legislation and find out its purpose and other information about it. I also have to include research about this bill. I went to Thomas.loc.gov/ I

Chemistry
so i got a test and like usual my teacher didn't teach me half of the stuff that's going to be on it so he gave us a pretest of what is going to be on it and an answer key and i got several questions 13.) what is the pH of a formic acid if the

algebra
Hey jishka teachers I hope yall are having a great day that God has given us I was wandering if you can help me work this out so I can understand Triangle DEF has coordinates D(2, 5); E(1 5); F(1, 2). Find the coordinates of the image D’E’F’ after a

Calculus
For the function f(x)=104(x^2), find a formula for the lower sum obtained by dividing the interval [0,1] into n equal subintervals. Then take the limit as n>infinity to calculate the area under the curve over [0,1]. I only need help with the first part.

Calculus AB
Sorry but I've got a lot of problems that I don't understand. 1) Let f(x)= (3x1)e^x. For which value of x is the slope of the tangent line to f positive? Negative? Zero? 2) Find an equation of the tangent line to the oven curve at the specified point.

geometry
isoceoles triangle Find y find AB Find BC, with AB 4y+6 and BC 6y3. I don;t understand Thanks

Algebra
this isn't the same question as my last post!! it's the second out of three. Hello! I'm looking over one of my tests and trying to see how to do things I got wrong, but I'm having trouble with three of the questions. Here's one of them: Find the simplified

statisticsPLEASE HELP quick
I understand most of the formulas however Im not sure what the answers tell me. I did a frequency distribution table for all points scored by a football team over 4 years, but I don't understand what my answers mean and I don't want to look stupid in front

eng 122
Which of the following techniques are described as advanced reading goals? (Points : 1) Read to understand nuances and to assess views, to locate gaps in the conversation, to find places to comment and respond. Read to understand a position that is

electrodynamics  max radiation angle
can anyone offer advice to find ƒÆmax after one has found that cosƒÆmax=[ã(1+15ƒÀ2)+1]/3ƒÀ ? I do not really understand the approximation given where ƒÀ=1ƒÃ Thanks Sorry ƒÆ > theta ã > square root ƒÀ > beta ƒÃ  > E

history
I don't understand this question: the removal of general mcclellan represents a loss of the army and the potomac and a victory for the interfering politicans in washington (validate) i know that mcclellan was replaced by grant because he was to hesitant to

trigonometry (repost) Mathmate
I want to start by saying thank you . You have no idea how much u have helped me understand logarithms, even better then the books i have (it poorly explains the subject of trigonometry let alone logarithms and antilog). Your last explanation was very

Geometry
Write an equation for the line containing the given points. (2,3) and (4, 4) How would I do this? I understand that first, you find the slope, but how do you find the y intercept? Thank you. :)

Statistics Psychology
I do not understand how to find the critical values of the test statistics. I also need help understanding how to find the standard error as well. Thank you!

Geometry
In a 30,60,90 triangle 1: If b=12, find c 2: If b=3,find a Letter a is on the 90° side, b is on the bottom near 60° and c is near 30°. Could anyone explain how to do this? It's hard to understand from my textbook.

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.

geography Ms. Sue
I looked at the economic articles that you gave me from that website and I don't understand any of them. Do you know of any other sites where i could possibly find an economic article for latin america that is no older than 2 years old. I'm in 6th grade

algebra2
how do you find out the vertex when graphing inequalities of quadratics in equations like this y

English
This is the other poem which I have created, with a positve mind:) The last one was a Mood Poem; This one is a 'I do not understand' poem Here are the instructions for it: A. Begin the poem with "I do not understand." B. List three things you do not

Calculus
Can someone explain the method of implicit differentiation to me. I know that we differentiation both sides of the equation with respect to x (I don't understand what they mean by with respect to x). And then y is a function of x...I don't understand what

Algebra please
I have two left I need help with and don't understand. Find the partial sum S6 1. An=3n+2 2. Find the number of terms n in an arithmetic sequence if a1=20, d=5, and An=75.

Algebra HELP:(
I do not understand how to find x on a graph when there is no equation. I have the possible answers: a) x= 3, b) x=1, c) x=5, d) x=1 It asks me to find the value of x when y=5

Math (Please help ASAP?)
I have this weird question that has to do with linear equations (I think), and this is what it says. Let f(x) = 4x  5 A. Find f(3) B. Find x when f(x) = 21 Can somebody help me understand this??

University Math
If f (x) = (x^2+5x+2)^2, find f'(x). Find f'(5). Please show your work and explain it so I can understand how to solve this. Thanks

Computer science
3.We often come across the terminology like 6bbit processor, 64bit operating system and 64bit system bus. Do you understand those terminologies? What exactly those numbers represent? Please find out the exact meaning of three terminologies above (give

Math
How do I figure out 144/4 to find out if it is a natural number,a whole number, an interger, if it is a rational or irrational number,or a real number? I don't want direct answers i would like to understand how I would go about solving to figure it out on

Algebra
I need to find the vertex of the graph: f(x)=2/5x^24x+14 I know that in order to find what x equals I need to solve b/2a which for this equation would be (4)/2(2/5) which got me 4/ (4/5) which makes no sense! So please help me understand what I did

Math
a store buys a sweater for $25.00 and sells it for $35.00. find the percent of markup.can somebody please explain how to find the answer?I don't understand how to do this .

Statistics
Given that x is a normally distributed random variable with a mean of 28 and a standard deviation of 7, find the following probability: P(x

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

math
suppose x S f(t) dt= x^2  2x + 1. Find f(x). 1 S = integral and 1 = lower level, x = upper i don't understand what i'm supposed to find/what to do and i didn't make any typos.

MATH URGENT
f(x)=12x^5+45x^4–80x^3+2 the question asks to find the inflection points but i don't seem to understand how to find this even by taking the second derivative.

math
f(x)=12x^5+45x^4–80x^3+2 the question asks to find the inflection points but i don't seem to understand how to find this even by taking the second derivative.