Recent questions tagged algebra

Description : How do I work out the value of G in this question?

Last Answer : Think about it. You already have one of the values. The rest is easy. If you had to guess how to do it, how would you do it?

Description : What is the derivative of y = tan 1/2 x^3?

Last Answer : 3xraised2/(2*cos((xraised3)/2)raised2) Now work it back and see how that happened.

Description : Can you help with this algebra problem?

Last Answer : http://www.wolframalpha.com/input/?i=x%3Da%C2%B2%2Fb%2Ba+solve+for+a good luck trying to get there yourself.

Description : Can someone help me solve this algebraic word problem?

Last Answer : K + T + M = 210,000 K = 2T = 0.5M ( simplifying M = 4T ) Substituting for K and M into the first equation gives: 2T + T + 4T = 210,000 7T =210,000

Description : What does the little number to the bottom right of a number mean in algebraic expressions?

Last Answer : answer:http://mathforum.org/library/drmath/view/61321.html Date: 09/30/2002 at 23:37:35 From: Doctor Peterson Subject: Re: Subscript vs. Superscipt Hi, Kevin. A subscript is just a letter or ... questions, feel free to write back. - Doctor Peterson, The Math Forum http://mathforum.org/dr.math/

Description : Recall a parody of how math word problems have changed over time and how they reflect lowered educational standards?

Last Answer : I remember getting something like this years ago, but sorry, I don’t have it. I would like to though.

Description : How do you know where to put the "x" in the proportions?

Last Answer : answer:Percent problems translate very directly from English to math. I'll show you with an example: The problem is, What percent of 40 is 10? What is what you're solving for. This should be your x. Per cent - per means ... is 20% of 200? What: x Is: = %: /100 Of: * x = 20/100 * 200 x = 40

Description : How do you retrieve something you lost?

Last Answer : answer:You could post a notice on the bulletin board or ask the math teachers to make an announcement. Or perhaps Bob could point out the eighth grader when you go back on Monday. But I think maybe you’ve lost it. Sorry.

Description : Help with a cubic function problem?

Last Answer : answer:We aren't supposed to tell you the answer since this appears to be homework, but I will give you advice. Whenever you have a question involving translations, what you should do is to graph the ... for it, giving you your answer. Regarding your answer, it does not seem to be correct as is.

Description : How to determine the difference between a problem that involves permutations and one that involves combinations?

Last Answer : answer:That example is indeed tough. At first glance you're not certain if the chronology of the meetings matters, or you're just determining which ten students get to have meetings. But ... each student does. Combinations generally focus on choosing a group, permutations focus on choosing a lineup.

Description : Will you help me here at the end of my algebra journey?

Last Answer : answer:1) To find the slope, you use the following formula: slope formula: m = [y1 - y2] / [x1 - x2] 2) Now you have the slope and two points. You can find the equation (by solving first for ... b=5: y = 3x + 5 . Reference: Straight-Line Equations: Slope-Intercept Form and Slope of a Straight Line

Description : Will someone help this e.coli victim with this algebra problem?

Last Answer : answer:Yeah – that seems wrong. I get -3.2x -51.3. Although I don’t know if I’m reading that clearly. There may be some confusion about which is a minus, which is a negative, which is the variable, and which is the multiplication sign.

Description : How do I solve this rate problem?

Last Answer : answer:The trick to this problem is realizing that you really have TWO simultaneous rate / time problems. What we know is that Alex drove 220 miles at one rate and 80 miles at another rate (15 mph slower) for two ... rest is easy to solve. 220 miles in 4 hours = 55 mph 80 miles in 2 hours = 40 mph

Description : How can I remember to set up an equation like this problem?

Last Answer : Whenever you’re solving a question like that, you always want to end up with only one (possibly more) number on the opposite side of the letter.

Description : What symbol on my keyboard is used to mean the infinity sign?

Last Answer : Try holding down the alt key and typing in 236 on the number keyboard. If you are using Word 2007 type 8734

Description : Will you guys help me with my algebra homework today?

Last Answer : answer:I’ll give you a hint: Your problem is here: x – (1.8 – 4(x – 3.1x – 34.1))=0 x – (1.8 – 4x – 45.7x + 136.4)=0 Where does the -45.7x come from? Should it really be negative?

Description : Can someone please help me with a rational equation word problem?

Last Answer : answer:Time = Distance / Speed Let x = speed of boat in still water Then downstream speed = x+5 upstream speed = x-5 So equating the times upstream & downstream yields: 20 / (x+5) = 10 / (x-5) Now ... : 20x - 100 = 10x + 50 etc. Answer is 15. This kind of problem can be tricky! Hope that helps.

Description : Are these two lines perpendicular?

Last Answer : answer:They’re not. Just draw them on a piece of paper and it’ll appear clear as day. The coefficient of x has to be n in one and -(1/n) in the other for them to be perpendicular, in this case the second one is 1/n.

Description : How can it be that ∞ always has an ) in interval notation?

Last Answer : Because you can’t include everything. It never ends, how can it be fully contained?

Description : Algebra question: How does 2^-2=1/4? Why doesn't it equal -4?

Last Answer : Negative exponents turn to fractions.

Description : Anyone willing to help me with my Modern Algebra questions?

Last Answer : Sorry, but no homework questions here!

Description : How do I Show that either f(1)=0 or f(1)=1 ii) Show that either f maps each element of F to 0 or f is injective.

Last Answer : fluther is not the place to answer homework questions. That said, I’m happy to help you. Check your private comments.

Description : How do you convert a fraction into a whole number?

Last Answer : multiply across everything by the reciprocal of the fraction you want to get rid of. this will leave 1.

Description : What is the name of the theorem that proves this equation?

Last Answer : More information is needed. As it stands, I can think of several examples where it isn’t true. a = 0, b = 0: 0 – 0 ≠ 0 + 0 + 1 a = 0, b = 1: 0 – 1 ≠ 3 + 3 + 1

Description : What type of correlation would you expect between the number of minutes a candle burns and the height of the candle?

Last Answer : This seems like a rate question.

Description : Can you handle this algebraic brain teaser?

Last Answer : 0 and 1

Description : 3x = 81 how is this equation solved?

Last Answer : because 3x here means “3 to the fourth power”, which would be 81 (3×3 x 3×3)

Description : Solving for variable;; algebra 2?

Last Answer : Just like you would solve an equation with x, you want to get N by itself, so treat the other variables like numbers. If I were solving P + Z = 2 for P, I would move Z to the other side and get P = 2 – Z

Description : Algebra 2 help;; solve:?

Last Answer : cross multiply or multiply everything by the LCD to get rid of the fractions, either way works

Description : Is E[equal]MC'2 the most popular formula ever?

Last Answer : It sure seems that way. There is a pretty amazing Giorgio Moroder album named E[equal]MC2.

Description : Rational exponent (Algebra)

Last Answer : Rational exponent (Algebra)

Description : Linear algebra problem: Rank of a matrix

Last Answer : Linear algebra problem: Rank of a matrix https://youtu.be/b7tPLA3_y6Y

Description : Linear algebra problem: The determinant of the matrix

Last Answer : Answer : Linear algebra problem: The determinant of the matrix

Description : Linear Algebra Problem the solution to the system of equations

Last Answer : Linear Algebra Problem the solution to the system of equations https://youtu.be/y_FlupirxZM

Description : Linear Algebra Problem 2

Last Answer : https://youtu.be/zAPDYO0q-9w Linear Algebra Problem 2

Description : Linear Algebra Problem The product of eigen values of the matrix

Last Answer : Linear Algebra Problem The product of eigen values of the matrixhttps://youtu.be/JGcynUZFQ78

Description : Logic Simplification Using Boolean Algebra

Last Answer : Logic Simplification Using Boolean Algebra 1 : https://youtu.be/fuoSMm2dJMc Logic Simplification Using Boolean Algebra 2 : https://youtu.be/bfCdur2QcJ4 Logic Simplification Using Boolean Algebra 3 : ... .be/V02wz8gz1UU Logic Simplification Using Boolean Algebra 7 : https://youtu.be/rgnJKgFO-SU

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