# Algebra, help + check please

103,406 results, page 24

Solve for k k/k-4 + k/k-1=1

### Algebra

Help Please! 2n(x-n)=x-5n+2 Solve for X

### ALGEBRA

HOW DO I SOLVE THIS PLEASE 5ãx =ãx -12

### algebra

can someone help me with this please 2/3 ãx =8

8x/6y divide by 2x/3y

### algebra 1

Mulitply ((n-5)/(n^2 - 2n -3)) / ((n-3)/(n^2 -4n - 5)).

### Algebra 1

3(4 - 2x) - -2x SHow how you did it?

what is the value in "x" in 16^2 = x

Let f(x) = x + 2 and g(x) = x2 Find ( g o f)(-5) A. -3 B. 9 C. 49 D. -10 B?

### Algebra

Please simplify. 1.) (c^-3)^2d^4/d^-2= 2.)(e^4)^-3f^-5/f^-2= 3.)(8^-7/8)^-2= thank you. :)

### Algebra

(x+5)^2 -(x-5)^2= Simplify. Help please :)

### Algebra

Can anyone help me to solve this please: 1) m/16 - 9 = -8 2) -9 + n/4 = -7 3) p/4 + 8 = 7 4) b + 11/3 = -2

### Algebra

6= x+2/3 help me solve this please

### Algebra

3x^2 + 6 - 2x + 5x - 4x^2 + 9 NEED HELP PLEASE

### English

Can you please check this sentence for me, please? Thank you for your invaluable help. 1) I like this singer for his determination and energy transmitted (?) during his concerts. In spite of his illness, which affected the last years of his life, he remained faithful to his ...

### English

Can you please check these sentences for me please? Thank you. 1 Puritans was the name given to the more (most?) extreme Protestants within the Church of England. 2)Charles I's reign was characterized by the continuous conflict with the Parliament. Puritans held a considerable...

### Algebra 2

Can someone please check these answers for me?? I'm pretty sure most of them are right, except for maybe the second T/F question... 1) T or F. The domain of y=ln x is equal to the range of y=e (superscript x). True 2) T or F. ln(3x x y to the 3rd power) = (ln x 3) x (ln x) x (...

### Algebra

For each equation, determine whether its graph is symmetric with respect to the -axis, the -axis, and the origin. 4y^4+24x^2=28 and y=1/x^2+5 Check all symmetries that apply x-axis,y-axis,origin or non of the above.

### chem

the element nitrogen and magnesium react to give magnesium nitride according to the balanced equation N2 + 3Mg = Mg3N2 suppose you have 0.3616 mol of n2 1-how many moles of mg are needed for complete reaction? 2-what mass of Mg3N2, in grams can be produced? ( the molar mass of...

Complete the identity secQ - 1/secQ = secQ Is this correct?

### Math Help

please check my answers thanks 1. A 2. D 3. B 4. B 5. A 1. which geographic features lies east of the andes moutains? A. saltwater grasses B. active volcanoes C. llanos grasslands D. mangrove swamps 2. Which landform can be found in the andes mountains? A. savannas B. ...

### English

Thank you very much for encouraging me to go on with my work! Here are some more sentences I'd like you to check. Can I start my exercise with: Fill in the blanks with an appropriate preposition. Complete the sentences using an appropriate preposition. 1) He is a trainer now ...

### algebra

can anyone tell me how to do this i am so lost. The sum of two numbers is 37. Their difference is 7. What are the two numbers? x = one number so x+7 + x = 37 2x= 30 x=15 other number x+7 or 22 Check 15 + 22 =37

### Algebra check

Determine whether f(x)=x^2 is one to one. When I substitute values in for x even when I use negative values x^2 will be positive so is it one to one?

### Algebra II

Solve each equation. Check for extraneous solutions. Solve:|x+5|=3x-7 My answers were: x=6 and x=.5 I don't think they are right though, but I should get 2 answers right???....Help!

### mrs SUe Algebra check

I cant figure this out 6 /2 * 8-8 /2 +4 i got 6/2 * 8-8 /2 3*8 4 24 -4 = 20 is this right way? 29 - (3+5) *2 +3 i got 16 is that right? 5-[6+3(-40/8) + (-2)exponent 2 i got 9 x5 = 45 + 4 = 5 -49 = -44 is that correct? [-6*(2-4)]/(-2)-(-9) i got -1.71

### Algebra 1 Explanation (Anyone, please!)

Please, can anyone explain the concept of graphing quadratic functions to me? For example, how must I graph gradratic functions such as y = x^2 - 2x - 3? If anyone could also include step-by-step solving methods, I would truly appreciate it.

### Algebra 2

PLEASE HELP WITH THIS-ITS DUE APRIL 5TH, 2011!!! During a past epidemic, the number of infected people increased exponentially with time, or f (t) = ab^t , where f is the number of infected people at time t, in days. Suppose that at the onset of the epidemic (0 days) there are...

Please help me with the following question: A student attempts to solve for c in the equation below. Which statement best applies to the work shown below? 3c + 6 - 4c - 12c = 7 -13c + 6 = 7 -13c + 6 + (-6) = 7 + (-6) -13c = 1 c = -1/13 A. The student followed all rules ...

### Math

Pipes A & B can fill a storage tank in 8hours and 12 hours, respectively . With the tank empty ,pipe A was turned on at noon, and then pipe B was turned on at 1:30 P.M.At what time was the tank full. Please help me!! Let V be the tank volume. Pipe A fills at (1/8 V) per hour ...

Please Please HELP!!!! I need the answer to this and i've worked it out but I don't know if it is correct... Please check my answer!!!! The polygons are regular polygons. Find the area of the shaded region to the nearest tenth. I can't post a picture of it but it shows a ...

### Math check

Average cost = q^2¡V15q + 48 Calculate the output level (q), which minimizes a)Total Cost b)Marginal Cost I got an answer for a) is q=8 and b) is q=5 I need somebody to check it for me, thanks so much.

### Algebra

An oil spill from a tanker in pristine Prince Williams Sound in Alaska begins in a circular shape only 2 ft across. what happens to the area if the diameter is doubling each hour. How large will the spill be in 24 h? diameter= 2^(t+1) t is time in hours. Area= PI*radius^2= PI...

### algebra expressions

i need to write an algebraic expression for each word phrase. Can you check if I am correct: 2) 13 less than a number q i got : 13 - q 4) the quotient of a number n and 4 i got: n/4 6) the number of days in w weeks n * w 8) the cost of p photocopies if each one costs \$ .15 \$....

This is my problem: When Christy takes her pet dog for a walk, the dog walks at a very consistent pace of 0.45 m/s. There are 20.1 m between the front of Christy’s house to the nearest dog park. How far will Christy’s dog have walked toward the park after 25s? This is my ...

### calculus

Could somebody please check these for me? Solve the differential equation with the given initial solution. 1. (dy/dx)=(-y/3) for y(0)=10 my answer was y=10e^(-x/3) 2. dP/dt=P+4 for P(0)=100 my answer was P=104(e^t)-4 3. dz/dt=te^z for z(0)=0 my answer was z=-ln(-.5(t^2)+1) THANKS

### calculus

Could somebody please check these for me? Solve the differential equation with the given initial solution. 1. (dy/dx)=(-y/3) for y(0)=10 my answer was y=10e^(-x/3) 2. dP/dt=P+4 for P(0)=100 my answer was P=104(e^t)-4 3. dz/dt=te^z for z(0)=0 my answer was z=-ln(-.5(t^2)+1) THANKS

### Chemistry

Are the following compounds or mixtures? Please help to check the answers. 1) starch - compound 2) chalk - compound 3) coal - mixture 4) drain water -compound

### Algebra1

Please check these 25. If a dress were 20% off of the marked price of \$32.00, how much would it cost? \$25.60 26. Write 1,000,000,000 in scientific notation 1.0 x 10^9 27. (3.0 x 10^2) x (2.0 x 10^6) = ? 6.0 x 10^-4

### Algebra

A rectangular garden is 54 feet longer than it is wider. Its perimeter is 292 feet. Write a system of linear equations whose solution gives the width and length of the garden. Use the substitution method to solve and check your answer.

### English

Writeacher,can you please check if everything is correct? Thank you. 1) Can you give me a hand to finish this exercise, please? 2) The answer to your question is on he tip of my tongue. 3) Behave yourself! Don't shrug your shoulders! 4) I can't see at a distance. I think you ...

How can you determine if the given lines are perpendicular? Line 1: (-1,3) and (3,-3) Line 2: (-3,0) and (3,3) A)determine if they have slopes with opposite values*** B)determine if they have the same slope C)determine if the product of their slope is 1 D)determine if the ...

### Micro Economics

Assume that the market for annual physical check-ups is in equilibrium, and not everyone gets an annual physical check-up. What is the effect on price and quantity if a government regulation fixes prices at the current level and requires everyone to get an annual physical ...

### Chemistry

Can you please help me to work out the addreviated structural formulae of hydrolysis of tocainide? Won't it be the -NH2 group that hydrolyzes? ArNH2 + HOH ==> ArNH3^+ + OH^- Check my thinking. Thanks That is exactly what I thought it would be. Thanks again DrBob.

I am a teacher. I teach the fifth grade. Dose any body have an idea of a good book I could read them. Thank YOU. Please check the many books listed at this site. (Broken Link Removed) Thank You very much

### Chemistry

Can someone please check my answer...thank you! According to Raoult's law, as the mole fraction of dissolved nonvolatile solute in a given amount of solvent increases, the solution vapor pressure: VARIES AT RANDOM?

### Health/ Basic Clinical Procedures

Please check my answer thanks Which one of the following elements is necessary for bacterial microorganism to grow ? A. light B. body temperature C. acid environment D carbon dioxide I pick B

### Health/Specialty Exams and Advance Techniques

Please check my answer to this question thank you Early detection of testicular cancer relies on A a cystoscopy B self-exam by the patient C good nutrition D exercise I picked B

### Applied Dog Behavior

Please check my answer thanks 7. _______ reported using a "cricket" to train animals as early as 1951. A. B. F. Skinner B. Ivan Pavlov C. Gary Wilkes D. Sigmund Freud I picked A

### thanks alot damon check

water pollution in the united states and canada is caused by: A) acid rain b)runoff agriculture chemicals C)industrial wastes D)all of the above i think c if wrong please correct

### Technology

i'm not really sure about this answer, because i didn't find it in my book. i think i'm correct. please check: 10. A wrench uses the principle of a(n)__________ in its operation. a. lever b. inclined plane c. pulley d. wheel and axle B?

The first offense for federal trafficking penalties that is not less than 10 years and not more than life applies to wich drugs: a) cocaine b) Heroin c)Methamphetamine d)LSD e)none of the above My answer is E.

The first offense for federal trafficking penalties that is not less than 10 years and not more than life applies to wich drugs: a) cocaine b) Heroin c)Methamphetamine d)LSD e)none of the above My answer is A

### English

Could you please check this sentence I need to include in a letter? 1) Thank you very much for your last e-mail. Unfortunately, I couldn't read the document attached to it. 2) Actually, it was blank. Can you post (send) it to me again (once more, another time).

### Math Ms Sue check

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 ...

find the lateral area of a cone with a radius of 7ft. and slant height of 13ft, use 3.14 for pi and round the nearest tenth. . . . . A.439.6 ft^2 . . . . . B.324.5 ft^2 . . . . . . C.571.5 ft^2 . . . . . . D.258.7 ft^2(I PICKED THIS ONE)

3. Which of the following pairs of terms could be used to describe a bullfrog that is active at night and enters a state of complete inactivity during colds months? . . . My answer: Circadian rhythm and hibernation.

Which choice is a complete sentence? A- Stacks of books to be shelved. B- When Francine cooked dinner for the first time. C- The actor played the leading role. D- Gave her a blue bicycle for her birthday. I think it is C.

### vocab

i don't know none of this . PLEASE HELP!!! words: attest, attribute, discern, dispatch, enhance, enigma, exemplify, mobile, nocturnal, orient. Sentence check 2 for chapter 8 on improving vocabulary skills fourth edition

choose the linking verb to complete the sentence Gemma _____ the first female winner of the annual poetry contest? congratulated photographed became knew

### World History

Question 16 (Multiple Choice Worth 5 points) Please check: (05.05 LC)Which of the following is not considered a cause of the Enlightenment? increased availability of printed books the Scientific Revolution *******decline in the education system******** the Renaissance

### History

Please check! 2. What changed almost every aspect of life in South Carolina in the late 1800s? a. the discovery of gold b. the rise of inflation c. the election of President McKinley d. the development of electric power***

### S.S

1)Which geographic feature marks the last natural obstacle for Georgia’s rivers on their way to the Atlantic Ocean? A)the Floridian Aquifer B)the Valley and Ridge region C)the Fall Line D)the Marshes of Glynn<<?? Check my answer please.

### precalculus

Can you please check these answers. In exercises 10-13 , find (a)2v+u, (b)u-3v), and (c)5u-v. 10.u=<0,-4>, v=<-2,-8> a) 2v+u = <-4,-16) + <0,-4) = <-4, -20> b,u-3v =<0,-4>- <-6,-24> =<6,20> c) 5u - v = <0,-20> - <-2,-8) = <...

Check my work please! Although India ahs only 16 official languages, people there speak more than ________ language. 1.30 2.50 3.100 4.800 I belive the answer is 1.

### Algebra

Restated:For each equation, determine whether its graph is symmetric with respect to the -axis, the -axis, and the origin. 4y^4+24x^2=28 and y=1/(x^2+5) Check all symmetries that apply x-axis,y-axis,origin or non of the above.

A right triangle has an area of 13 m2. The dimensions of the triangle are increased by a scale factor of 3. What is the area of the new triangle? Please help!!!! a)39 m2 b)169 m2 c)117 m2 d)142 m2

### English

please check my answer thanks :) In addition to the information you include in a document, the_________ of your writing sends a message to the reader tone method length phase I picked tone

### Law and Ethics in Med

please check my answer thanks :) Confidentiality of medical information is protected by...... 1. the US Constitution 2. no laws at all only by custom 3. none of the above My answer... I said #2

### History of health care

Please check my answer tahnks :) Capitation is the least type of medical service reimbursement used today True or False I said True

### Anatomy and Physiology

Please check my answer thanks True or False The process of breaking a complex substance down into smaller components is called metabolism I said true

### Health/ Basic Clinical Procedures

please check my answer thanks True or False the review of systems is a history of the patient's previous diseases, injuries and operation . I said False

### spanish

please check this: En el invierno, uno debe _____ después de ducharse y antes de salir de la casa. a. ducharse b. secarse el pelo c. levantarse tarde d. despertarse temprano B?

### spanish

please check: "¿Dóonde está mi chandal azul?" "Creo que está en _____." a. el catálogo b. el vendedor c. el cesto de la ropa sucia d. el suéter de cuello alto C?

### math

Which should be used a permutation or combination? Determine the number of different ways in which a committee of four can be chosen from a group of twelve members? please check my answer = combination

### English

Could you please check these sentences for me? Thank you. 1) She doesn't want me to watch it because she thinks it is a programme with no ideas, in which characters often shout at one another. 2) She gets on well with her younger brother. 3) They don't go out with each other ...

### Health

I left out two last sentences, Writeacher. Could you please check them? 1) I have no credit on my phone. I need to top it up. 3) They are trying out a new vaccine against cancer.

### Medical

When a physician is billing under the RBRVS system, he or she is using A. APCs. B. HCPCS/CPT codes. C. MS-DRGs. D. ICD-9 procedure codes My answer is (B) check this one for me please

### science question

please check i think its B or D. Under which conditions are clouds formed from ice crystals? A.strong winds B.high altiude C.low humidity D.high pressure

According to the first derivative test, a differentiable function must have a relative minimum between any two relative maxima. True.

### Writing

Please check this thesis statement. Thesis: While some college students want to be completely independent by leaving home, it is worthy to note that dependence is necessary at times.

### English

1. Do you want to stop practice? 2. Do you want to stop practicing soccer? 3. He sent a message to Tom about the photos uploaded on the website. ------------------------------- Are the sentences all grammatical? Would you check the please?

### English

In any academic writing, it is appropriate to use the word you, as in: When you read the research, you know that the death penalty does not deter crime. True False I say false. Please check my work.

### Calculus

1. Use the Mean Value Theorem to find an x-value where the instantaneous slope=average slope over the given interval: f(x)=(9-x^2)^(1/2) on [-3,2] I have done three chapters of Calculus already and I never have had to check for extraneous roots. So, my question is, when ...

### Algebra

I can't seem to solve this for x correctly...I got 128 over 55 as an answer which can't be correct. Please help me find the correct answer! Thanks! The equation is: .05x-.6(x+2)=.08 Please show the work as well as the answer. Thanks again.

### Algebra

Does anyone have the answers to Unit 2 Lesson 8 Unit test on Expressions, Equations, and Inequalities. There are a total of 19 questions. I did this wrong the first time i dont want to get it wrong the second time. Please i need this turned in before the day is out today. This...