Algebra, help + check please

104,559 results, page 56


Can someone help me simplify this rational expression x^2-25 /x^2-3x-10 Please show step by step examples. thank you


Radicals are so confusing. Can someone show me step by step please. Im lost 5/8+√7

algebra 2

Solve system of equations.Describe each step if your solution. W+X+Y+Z=2 2W-X+2y-Z=1 -W+2x-y+2z=-2 3w+x+y-Z=5 Please help I only know how to do this with 3 equations.

algebra functions

how do i calculate this if f(x)= 3x+1 and g(x)=x+2 find (f+g)(x) and calculate (f+g)(1) a little confused can some one please help me thank you

Algebra help please!

1. Find 5A-3B. A=[6 -5 8], B=[7 5 -6] [5 -4 3] [4 3 -4] 2. Solve the matrix equation. [3 -1] - x=[-2 3] [2 5] [1 -6] 3. Given A=[1 -1 2] and B=[-1 -3 2], [3 0 5] [2 4 5] [0 2 -2] Find AB. 4. What is the inverse of [-100 -25]? [-5 -6]

Algebra 2

Solving Quadratic Systems 2x^2+5y^2=53 4x+y^2=17 Please show work I'm having trouble solving it.

Algebra 2

Solving Quadratic Systems x^2+y^2=2 x^2-6y=10 Please show work I'm having trouble solving it

Algebra 2

Solving Quadratic Systems x^2+y^2=20 x^2-6y=28 PLEASE SHOW WORK I'M HAVING TROUBLE SOLVING IT


convert to decimal notation. 5.623 * 10^-8 is the correct answer 0.00000005623? If not can you correct me Please and Thank you!!

algebra--1 question

Simplify (2√5+3√7)^2 Can somebody put down the steps please? Thanks


Multiply. (2n^2+5n+4)(2n-4) (explain it to me) A. 4n^3-2n^2+28n-16 B. 4n^3+12n^2-2n-16 C. 4n^3+2n-12-16 D. 4n^3+18n^2-28n-16 please show me how you found it!

Algebra 1- Please help

Tell whether the sequence is arithmetic. If it is, what is the common difference? a. no (as in, its not arithmetic) b. yes;4 c. yes;5 d.yes;6 i think its a

Algebra 2

Can someone help me solve this problem please? The directions are to simplify the logarithm: log5(a + 2) + log5(a – 2)

Algebra help

I need help solving this problem 1/5(2x - 10)+4x= -3(1/5x +4) Can someone at least walk me through this problem? Please and thanks!

Math Algebra 2

Help please. I know how to compute for the rest mass but how can you solve this problem. Solve for v in m = m0/(sqrt of 1 - (v^2/c^2)

Math Algebra 2

Help please. I know how to compute for the rest mass but how can you solve this problem. Solve for v in m = m0/(sqrt of 1 - (v^2/c^2)

Algebra 2

1. Convert the 5th root of x^3 into a rational expression. 2. Solve i^63 I don't know how to solve these so please help me!!!


Please how I solve this equation giving the domain of -3 I know that i have to replace the -3 where the x is but I do not know how to solve with the fraction. Thank you. -2x+1/3y=4


Please how I solve this equation giving the domain of -3 I know that i have to replace the -3 where the x is but I do not know how to solve with the fraction. Thank you. -2x+1/3y=4


Which equation is the equation of a line that passes through (-10,3) and is perpendicular to y=5x-7 A)y=5x+53***** B)y=-1/5x-7 C)y=-1/5x+1 D)y=1/5x+5 Am I correct Please explain


can you help me graph the function y=-5(3^x)please? f(x)=-5(3^x) f(x)=-5*3 f(x)=-5(9) =-15 =-45 Is this the correct way to work this problem out and how to I graph?


Can someone explain how to find the solution to the inequality. −2x − 14 > −4 + 3x Please show me step by step.


Please check my answers I think they are right if not please tell me where I went wrong. Thanks The annual net income of general electric for the period 2007-2011 could be approximated by P(t) = 3t^2- 24t +59 billion dollars (2<t<6) where t is time in years. a) compute p...


can someone check me and see if this is correct. ã(4x+1) + 3 = 0 ã(4x+1)= -3 ã(4x+1).2= -3.2 4x + 1 = 9 4x = 9 - 1 4x = 8 x = -2 not sure what your symbol ã means but it appears like you mean square root. If that is the case then in your second line √(4x+1)= -3...

algebra I

for my homework I have to graph 4 equations: 1. y=1/4x^2+3x-3 2. y=-x^2+7x-2 3. y<x^2+7x+6 4. y<*-1/3x^2+4x+5/2 [<* means greater than OR equal to. I just don't know how to put the line under it] we are allowed to do them on a calculator. but since I don't have the ...

Reverse Equations

a four-component mixture was extracted. In the mixture was R-phenol, RCOOH, RNH2 and R-(C=O)-R in solution with ether and aqueous NaHCO3. RCOO-NA+ was separated out on the water layer. Aq. NaOH was added to the ether layer and R-benzene-O-Na+ was separated out in the water ...

Algebra 1

Can Someone Check My Answer The table shows the amount of money (in dollars) spent by a household on plants and flowers for certain years. Describe the rates of change in the number of dollars spent during the time period. Year 2001 2002 2003 2004 2005 Amount 127 134 139 137 ...


Posted by rfvv on Saturday, March 11, 2017 at 6:51am. What is the part of speech of "for my birthday" in each sentence? An adverb phrase or an adjective phrase? Would you check them, please? Can a phrase be either an adjective phrase or an adverbial phrase? Thank you. 1. What ...

Exceptional children

Can you check my answers please Adaptive behaviors are a.) the same as fuctional skills b.) different from functional skills c.) exclude functional skills or d.) include functional skills. this is tricky for me but i'm guessing d.) include funtional skills. Does this sound right?

language arts

please check my answers: 1.which of the following sentences correctly demonstrates the verb form of the adverb ruefully? (A)she had a rueful look on her face (B)i rue the loss of a golden opportunity (C)he is totally rueless to the truth 2.a person described as sensitive can ...

Social Studies

what was significant about henry Mcneal Turner and black legislators? choose all that apply. 1. Their offices were protected by republican politicians. 2. They were African Americans elected to public office in the south after the civil war. 3. They were given their seats in ...

microsoft 2013

10. David has a small business and is working on an Excel worksheet to help manage his inventory. David realizes cell E14 has the wrong output. To check the problem, David should first select cell E14 and look at the _______ to check the formula. A. range B. Formula bar C. ...

Math-- Please Check

1.Would fraction notation for 38% be 19/50 ? 2.Would percent notation for 0.382 be 38.2% 3.Would percent notation for 2/3 be 66.6 (with 6 keep repeating)? Yes, yes, yes


What problems did the Israelites face when they returned to Canaan? This is a religious, rather than a historic question. Please check your book or the Bible for the answer your teacher expects. As there is no physical historical evidence for Any of the events in the bible, ...


please check president Roosevelt's progressive record included all the following EXCEPT a. conservation of forest land b. break-up of several trusts deemed harmful to the public c. regulation of food and drugs d. establishment of the Federal Reserve System the books says that ...

cultural diversity

An early learning center that emphasize "product" over "process" would a. threaten most mainstream children b. be child-directed reflecting self-selection of activities and material c. ignore the principles of developmentally appropriate practices d. harmonize with non-...

History- check my answer, please!

Japan became a peaceful, democratic nation relatively quickly after the end of World War II. Which step was not part of its postwar transformation? disarming most of the military adopting a new constitution giving women the right to vote giving the emperor more political power...


Many events take place on the island but everyone feels guilty and sorry for their actions in the end and they head back to Italy, Milan safely all thanks to Prospero's spirit, Ariel. Ariel is a spirit who used to be a slave of Sycorax, an evil witch. (Would you check the ...

Introduction to Graphic Design

Hello! Thanks for checking my question out! ____ 9. Susan is practicing her creativity by finding relationships among seemingly unrelated topics. What creative strategy is Susan using? (1 point) a) reverse brainstorming b) free association c) connecting ideas d) perspectives ...


A virus scanning program is checking every file for viruses. It has completed checking 40% of the files in 300 seconds. How long should it take to check all the files? I am not sure how to set this problem up, can someone please help! 40% = 40/100 40/100 = 300/x Solve for x. I...

Health insurance

Please check my answer thanks for the help :) If an enrollee uses more services than originally assumed per the PPPM calculation then what would the paln do? A. show a profit for that period B. show a loss for that period C need a contract renegotiation D. reguire that the ...

6th grade spanish please check if i'm right

Puedes encontrar la taquilla en frente de LA SALA DE CONCIERTOS. Si te gusta escuchar y ver música en vivo, puedes ir a UN CONCIERTO. the choices are:el cine el circo el espectáculo el estreno la discoteca la sala de conciertos las olimpiadas un concierto Thanks!


Allusion- 1 Why did the author refer to "Hansel and Gretel"? 2 Why did this folk tale emphasize the horror of the Holocaust for Misha? 1 Because in Hansel and gretel the kids burned the witch and died but in Milkweed the jewish are burned. 2 Because it kind of resembles the ...

language could you please check my work

true(t) or false (f) 1)f reading is not a real hobby 2)f an activity that is done outdoors is not a hobby 3)t photography is a popular hobby 4)t building a cabnint can be part of a hobby 5)f cooking is never considered recreation 6)t model building is very educational 7)f ...

Physics-Please check

If I went tubing with my little sister, and I have a larger mass, why would we both reach, in terms of energy, the bottom of the hill at the same time; Originally I thought becuase we would both be accerlerating at the same rate but that doesn't explain the energy part does it?


Not Urgent But Please Check My Answer: A pencil at a stationery store costs $1, and a pen costs $1.50. Stella spent $21 at the store. She bought a total of 18 items. Which system of equations can be used to find the number of pencils (x) and pens (y) she bought? I think it is ...

write a check

How to write a check for 4,024.29

Dog Breeds

Please check my answer thanks 20. Suppose the AKC is considering recognizing a new dog breed that's medium in size and quite good at flushing game birds out of hiding and then retrieving them. This new breed would likely be categorized in which group? A. Hound B. Sporting C. ...


Can you please check these sentences for me? Many thanks. 1) At the moment I don't know at what time I will be arriving in Berlin on Friday 13 August. 2)I believe I will be able to have conversation classes with you from Monday to Friday. (I may do two hours of German instead ...

American Government

1. Which of the following is NOT a criticism of the media's influence on public opinion? a. bias in reporting b. negative focus c. watchdog reporting d. visual imagery Answer: b 2. Which of the following is NOT a function of an interest group? a. supplying information b. ...


Can you please check these statements? I'm not sure about the word choice. 1) Explore the theme of the double as it occurs in the works of the writers we studied in class. (I need to change "we studided in class") 2) Describe (I need a synonym) the kind of imagery used by ...

science please check my answer

A boy climbs to the roof of his house and drops a 0.40 kg rubber ball from the 7.5-meter peak of the house. How much energy was lost in the process? So I got 48 J is this correct? The bounce takes place over a 170 ms time interval. What is the impulse given to the ball during ...

please check(Social studies)

1.A---->B 2.D---->A 1.Which of he following is the greatest threat to the island's resources? (central american and the caribbean) i included that because i think that is the islands. A.biodiversity B.hurricanes C.deforestation D.ecotourism 2.What causes hurricanes to ...

social studies (Saudi Arabia)

In what way is Islam most likely to impact Muslims during work days? 1)They must leave work early 2)They will not participate in leisure activities after work 3)They can not have certain jobs 4)They need to pause during their work and pry I think it is 4. Am I correct? please ...


Dear kind-hearted tutor, Can you check my solution on this question? Given f' (x) = {2x - 1, x≤1; x^2, x>1, find f’ (1) if exist. Since it asks to find f’ (1). I choose the first derivative because it satisfies the condition for 1. 2 x – 1 = 2 (1) – 1 = 1 What...

equilibrium III

what's Kp if Cl2CO was found to be 7.46% decomposed at 395'C when initial pressure is 7.60atm. Cl2CO --> <-- CO + Cl2 Initial p = 7.60 atm. 7.46% decomposed. (CO) = 7.60*0.0746 = ?? (Cl2) = same ((Cl2CO) = 7.60*(0.9254) = ?? Kp = pCO*pCl2/pCl2CO Post your work if you get...


I am a bit confused about conjugates in algebra. I am supposed to multiply 8/(the square root of two + 4) by the square root of 2 -4. My math book then goes on to simplify this to (8 times the square root of two minus 32) divided by (2-4 times the square root of two plus 4 ...

substitution method

-x-4y=-14 2x=y+1 Let's look at your two equations. -x - 4y = -14 2x = y + 1 Let's solve the second equation for y: y = 2x - 1 Now let's substitute (2x - 1) for y in the first equation: -x - 4(2x - 1) = -14 -x - 8x + 4 = -14 -9x + 4 = -14 -9x = -18 x = 2 Substitute 2 for x in ...


To solve the inequality -1/2 k is greater then or equal to -5, Danny multiplied both sides by the reciprocal of -1/2 . His solution was k is greater then or equal to 10.What mistake did he make? Danny checked his solution, but his check did not let him know that he had made an...

Math, algebra!! Please help!!!!!!

Using the numbers 5, 8, and 24, create a problem using no more than four operations (addition, subtraction, multiplication, division, square, square root, cube, cube root) where the solution will be an irrational number. Explain why the result of your operations is an ...

Math Help

Hello! Can someone please check and see if I did this right? Thanks! :) Directions: Find the exact solutions of the equation in the interval [0,2pi] cos2x+sinx=0 My answer: cos2x+sinx=cos^2x-sin^2x+sinx =1-sin^2x-sin^2x+sinx =-2sin^2x+sinx+1=0

physics/ conversions

Please check these problems. 1. 92 X 10^3 km ---> dm My answer: 9.2 X 10^8 dm 2. 5.52 X 10^8 g ---> kg My answer: 5.52 X 10^11 kg 3. 8.66 X 10^-9 m ---> mm My answer: 8.66 X 10^-12 mm 4. 1 um ---> m My answer: 1 X 10^-6 m Thanks. 1 and 4 are correct. No so for 2 ...

bio check my answers pretty please?

If purple flower color is dominant and red flower color recessive, how many phenotypes are possible in offspring of homozygous purple crossed with homozygous red? 1 2 3 4 I put 1.

Science - Check my answers please (6th grade)

earth and the moon are kept in their respective orbits due to the influence of ? a) inertia b) gravity c) both inertia and gravity d) neither inertia and gravity Is it c) both inertia and gravity?


Revise the following sentence to omit personal pronouns. I think it is important for you to evaluate information before it in a paper. It's important to evaluate information before including in your paper. Please check my work.


The of the 45 numbers is 9.the average of the first 20 is 10 and the average of the last 24 is 8.find the 21st number. I have solved please check this. 9=x/45 ,so x=415. 10=x/20, x=200 and 8=x/24, x=192 So,415-(200+192)=23.answer Is this way and answer correct?

chemistry(check my answers please)

1)An increase in temperature ____________ the kinetic energy and average speed of the gas particles. A. decreases B. increases 2)As a result, the pressure on the walls of the container __________. A. decreases B. increases C. is not affected 1) i think its increase 2)i think ...


Could you please check these sentences? Thank you. 1) We're looking for a high school in which subjects such as biology or geography are taught in English so that in the future our students could carry out a project on a common theme in English. 2) I really hope your school is...


Which choice best describes the underlined words in this sentence? Red and a strange shade of green were the only colors available. Underlined is: Red _____ shade A- simple subject B- complete subject C- compound subject D- none of the above I think it is D.

English grammar.

Please check my answer! What is the capitalized phrase? TO SCORE ACCURATELY, bowlers must learn what the terms spare, strike, and split mean. Infinitive phrase**** Gerund phrase Adverb phrase none of the above I though that the capitalized phrase was an infinitive phrase.


1. Raise your left arm over your head. 2. Bend the left elbow and touch the middle of the upper back with your fingers. 3. Hold the left elbow with the right hand and pull back. 4. Hold for 10 to 30 seconds. ------------------ Are the directions all grammatical? Check them, ...


please check my answers what are the SI units for momentum? kg*m/s which of the following is not involved in hitting a tennis ball? a. kinetic energy b. chemical potential energy c. gravitational potential energy d. elastic potential energy i picked B How much power is ...


Traveling to Fukuoka About ten years ago, I went to Fukuoka, Japan. I went there by ship. In Fukuoka, I visited a bookstore. It was important to buy English books there at that time. I always feel great twhen I look at this picture. (Would you check this writing? Correct ...


Why do you save money? 1. I save money to buy a fancy bike. 2. I save money to buy the MS Office program. 3. I save money to buy a Samsung galaxy 5. 4. I save money to please my parents, for they like me to save money. 5. I save money to buy a new coat. 6. I save money to ...


please check this: "Te banas por la noche o por la manana?" "Generlamente, yo _____ por la manana." a. me bano b. me bana c. te bano d. te banas i think A..?

bio check plz plz plz

in human (2n=46) mitosis result 2 cell with 23 chromoses and meosis result in (n=23) 4 cell with 46 chromoses... is this statment true ? please help me ....


The binding of alanine to tRNAala is mediated by the enzyme...... a. aminoacyle-tRAN SYNTHSE b. amino-tRAN SYNTHSE c. aminoacyle-tRAN synhetase d. amino-tRAN syntase I think the right answer is c, but not sure. Please check

w w w (dot) sunnyd (dot) com / # / ads i don't know does the two sunny D ads are bandwagon. i think they are because they're smiling like they like sunny d but i could be wrong. can u check to make sure is it bandwagon or not. i really appreciate it please help and thank you

To Sam: Penn Foster answers

Please do not post any more answers. Jiskha is not a repository for any exam answers. In addition, we have no idea what the questions are. If you want to post a couple of your exam questions along with your answers, we'll be glad to check them for you.

chemistry: please check work

How many grams of solute are contained in 64.3 mL of 0.0238M KOH? Do I convert 64.3ml to L=.0643L Multiiply .0643L and .0238M KOH=.00153 Multiply .00153 and 56.105 g/mol KOH=.0858g KOH


Write the algebraic expressions for the following. Please check and correct me if I'm wrong!! 1. 3 less than 5 times a number. Answer: 5x-3 2. 18 fewer than half a number. Answer: 1/2x-18 3. 3 more than the quotient of a number and 2. Answer: x/2+3 4. 4 times the difference of...

Social Studies (Check, Please!)

Why did Roosevelt win an unprecedented third term in office? A: Roosevelt won an unprecedented third term in office because the voters preferred to stick with a president they knew during this crisis period.


1. Three student share 5 peaches equally. How many peaches does each student get? Answer: 1 2/3 2. Six friends share 4 sandwiches equally. What fraction of a sandwich does each friend get? Answer: 2/3 Please check the above two answers. Thank you

algebra help me please

The equation below shows the area of a trapezoid, A, with a height of 9 cm, and one base 35 cm. A = 9 over 2(b + 35) Which of the following formulas correctly solves for the other base, b? b = 2A over 9 + 35 b = 2 multiplied by A over 9 − 35 b = 2 multiplied by A plus 35...

Math please check my answer?

1)6x+11y=30 A) x-intercept= (-24,0);y intercept =(0,19) B)x-intercept=(0,1/5);y intercept=(11/30,0)<<<< C)x-intercept= (5,0);y intercept=(0,30/11) D)x-intercept= (24,0);y intercept=(0,19)


Which of the following expressions is true? A. 4^3 * 4^5 <4^12 B. 5^2 *5^4 =5^8 C. 5^2 *5^3 >5^5 *** D. 3^2 * 3^4 = 3^2 Which of the following expressions is true? A. 8^3 *8^2 <8^4 B. 4^4 * 4^4 =4^16 C. 3^3 * 3^3 >3^5 D. 2^2 * 2^6 <2^8 *** please check


Could you please check these sentences, please? Thank you. 1) Jane Austen appeared on the literary scene with her novel of manners based on the premise (synonym?) that there is (was?) a vital relationship between manners, social behavior and character. 2) They are usually set ...


If y varies directly as X and X=88 when Y= 110, find X whaen Y=70 Set up a proportion: 88/110 = X/70. solve for X.


I am having trouble with this, can someone please help me? Add (simplify if possible) x^2 + 11x x^2 - 6x __________ + __________ x^2 -3x x^2 - 3x

algebra- please help me factor

b^2-22b+57 I am not sure but I got b(b-22)+57 Looks right to me. No, the answer should be: b^2-22b+57 = (b - 3)*(b - 19)


factor 5x^2-x-12 please help me That does not factor into monomials with integers. It can be written as 5(x-1.6524..)(x+1.4524..) okay thankya

Maths algebra

Factorise the following: x^4 - x^3 - x^2 + x The answer is x(x+1)(x-1)^2 but I cannot understand how to get this answer. Can someone please show me the working? Thanks!

Algebra HELP

USE LINEAR COMBINATIONS TO SOLVE THE SYSTEM OF LINEAR EQUATIONS (please show steps) 1) -X+8Y=16 2) 4X+5Y=-2 3)4Y=15-3X 3X+4Y=36 5X-4Y=-23 2Y=3X+21


given two points one a line (8,1) and 10,8) find the x intercept and y intercept PLEASE HELP!

algebra ll

if f(x)equals 5x^2 minus 4/x, find f(4) my ans. is f(4) equals 66 if wrong answer and show work please

Algebra 1

what is the answer to this, please work it out. this is a fraction but i could not format it as such. Thanks! 5x(2)(squared) - 10x 7x-8 - 10x

Algebra II

How do you solve the linear equations x+y=5 3x-y=3 by use of the Substitution Method? (Please do not confuse with the Elimination Method)


Write an equation of line containing the given point and perpendicular to the give line (4-2); 9x+2y=3 Please help me with this


Given the function f(x)= (6)/(x+4)please find a formula for the inverse function. Thanks in advance! I got as far as f^-1(x) =


Can you please explain this problem to me? Determine whether 30 is a solution of the equation x-13=14. Is 30 a solution? My answer is no. x-13=14 30-13=14 No, not true. Thanks.


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