Thursday
March 30, 2017

Number of results: 22,783

Math
We have an important chemsitry test due and I want to make sure that I do not mess up on my algebra. I am dealing with the integrated rate law, but my question is purely algebraically in nature. I hope, somebody can help me. 1) ln(A) = -kt+ln(B) solve for t solve for k solve ...
May 13, 2013 by Yasemine

Alebra
Solve 5m - 8 > 12 Solve 12 - 3a > 18 Solve 5m - 4 < 2m + 11 Solve 2r - 18 ≤ 5r + 3 Solve 26p - 20 > 14p + 64 Can someone give me an example to one of these? I don't know how to do these.
December 19, 2016 by Jessi

I have a question, if f(x)=x/2 and g(x)=3x+1 find: a) (f+g)(x) i know you go x/2+3x+1. but how do i solve that?? b) (f-g)(x) i know you go x/2-3x+1, how do i solve? c)(f*g)(x) how do i solve? (f/g)(x) how do i solve?? f(g(x)) how do i solve?? thanks for your itmeee
December 16, 2008 by Jamie Lynn

algebra
Solve the indicated variable: 1. Volume of a cone: solve for h: V=¨ir^2h/3 2. Temperature formula: solve for C: F=9/5C+32 pleaseeeee help me solve these! plzzz! i have nooo idea how to do these. THANKS! =)))
September 20, 2009 by kitty kat

math
actually, in a addition to the question i posted a few minutes ago, can someone please help me with a few actual specific questions? thanks so much i'm very confused and i've been working on these all day. *Literal Equations* ~solve for x ax + bx = 8ab ~solve for y my - ny = m...
October 26, 2007 by kim

Algebra
Solve for x: h=(k/4)(x-3L) Solve for B: v-6Bxk=7B Solve for S: z+(1/7)sk=(1/6)yk^2 Solve for x: 3F=10hx+10hv+10xv
February 13, 2014 by Daniel

Math
Solve by eliminnation methods 2x-4y=5 2x-4y=6 solve the system by elimination method 5x+2y= -13 7x-3y=17 Solve x+6<-7 or x+6>4 Determine whether the given numbers are solutions of the inequality 8,-10,-18,-3 y-8>2y-3 Solve by the substitutioj method 2m+n=9 m-5n=10
July 14, 2008 by jay jay

Algebra
There are 4 problems that I don't understand how to solve so, please help me. A numerical explanation with words explanation would be nice. Thank you tutors. Rewrite each equation so it is in the form ax + b = c or x + d/e = f, where x is a variable. Then solve the equation. 1...
December 9, 2015 by anon

Physics/Science
A startled armadillo leaps upward rising 0.547 m in the first 0.202 s. (a) What is its initial speed as it leaves the ground? _____m/s (b) What is its speed at the height of 0.547 m? _____m/s (c) How much higher does it go? _____m Use distance vs time: d=vi*t - 1/2 g t^2 solve...
January 25, 2007 by TechnoBoi11

Algebra II
How do I solve the following problems?? 1. Factor: 4x^2-100y^2 2. Factor: 3x^2+27 3. Solve 3x^2+9x=0 4. Solve 12^2+30x=-12 5. 9a(a+1)=4 6. Solve 16x^2=25
June 29, 2011 by Nicole

Algebra 2
Solve each system 3x+2y= -2 9x- y= -6 I know how to solve for x but i get really lost trying to figure out how to solve for the second variable
September 11, 2008 by Rachel

Solve each system 3x+2y= -2 9x- y= -6 I know how to solve for x but i get really lost trying to figure out how to solve for the second variable
September 11, 2008 by Rachel

algebra
solve for the indicated variable: a. temperature formula solve for F: K=5/9(F-32)+273 b. annual interest rate solve for R: A=P+Prt
September 24, 2009 by narmin

Algebra 2
How do I solve these inequalities: e^3x>e^x-1 -6log (subscript of 4) x > -24 & how do I solve these: 8^x+1=3 e^x+2=50 8logx=16 I really don't understand how to solve these so can someone please explain them to me?
April 17, 2014 by Linda

Substitution Method-Plz help
Use the Substitution method to solve the system of equations. x + y = -4 x - y = 2 solve for x in the second equation. x= y+2 Put that in for x in the first equation: x+y=-4 (y+2) + y = -4 solve for y. Then, x= y+2 i don't get it.How did you get that?What does x equal? re read...
October 17, 2006 by Svetlana

Algebra
FIND THE GCF OF THE PRODUCT (3B+6)(2B-10) SOLVE... X^2=-6X x(x+6)= 0 x = -6 or 0 it would = 0 help me solve this problem.. solve for W: 2L+2W=38 please and thank you!
June 26, 2007 by Tomika

Math
Solve for S: r^2s-5s=7. Solve for b: L= 4a^2b. I'm confused about how to solve these problems. Could someone show me the steps?
September 12, 2011 by Sue

algebra
im trying to solve a literal equation, then solve the specific question first part is stumping me, im to solve for X ax=bx-c this is what I got ax-bx=c, but don't know how to get x by itself
September 3, 2013 by aaron

Rational Zero Theorem
I know how to solve if the leading coefficient is 1, but how would i solve it if its not 1. Ex. f(x) = 2x^3 + 7x^2 - 7x + 30 Can someone help me start that out? Then I'll use synthetic divison to solve for it.
January 13, 2009 by Chopsticks

Algebra
How do I solve this? ((1/t) - 1)/ (t -1) NO CLUE :) :) :) :) :) :) :) :) :) :)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1 How do I solve this? ((1/t) - 1)/ (t -1) 1/t - 1 = 1/t - t/t = (1/t)(1 - t) = (-1/t)(t - 1) The two t - 1 terms cancel each other out, leaving ...
February 15, 2007 by Lisa

math
Solve systems by substitution 5x - 2y = -5 y - 5x = 3 Substitute 5x + 3 for y in the first equation, and solve it for x. Once you have x, use either of the two equations you wrote to solve for y.
August 8, 2007 by Robin

Algebra
Solve 3x +1 < 5 or 3x +1 > 4 By saying "solve," is it asking for me to show it on a line and in interval notation? Here's another: f(x) < 3 and f(x) > 4, where f(x) = 1/2x - 7 I have no idea how to solve this! Please walk me through it! Thank you so much!
January 26, 2009 by Harper

math
solve for the indicated variable: a. temperature formula solve for F: K=5/9(F-32)+273 b. annual interest rate solve for R: A=P+Prt can you please show how to do these? thanxx =)
September 24, 2009 by narmin

Pre calculus
How do I solve this exponent problem? I understand the exponent rules, but I getting 1 but 1 is not the answer! I don't want anyone to solve the problem for me, I want to learn how to solve this type of problem. Thank you! Solve the equation: -8=-3-6 (3sqrtx^2) Thanks again!
March 27, 2013 by anon

math
solve each equation for 0=/<x=/<2pi sin^2x + 5sinx + 6 = 0? how do i factor this and solve? 2sin^2 + sinx = 0 (2sinx - 3)(sinx +2) sinx = 3/2, -2 how do I solve? These are not part of the special triangles. 2cos^2 - 7cosx + 3 = 0 (2cosx - 1)(cosx - 3) cosx = 1/2, 3 x= pi...
February 15, 2009 by sh

Algerbra
solve for x ac+x=xy have all terms with x on one side ac=xy-x take x as common factor ac=x(y-1) now solve for x 25a^2 - 9b^4 can u please help me solve and check these equations
September 26, 2006 by Mark

Calculus
How do you us implicit differentiation to solve x( y + 2 )^5 = 8 x( y + 2 )^5 = 8 ( y + 2 )^5 d/dx (x) + x d/dx(y+2)^5=d/dx 8 (y+2)^5 + 5x(y+2)^4 dy/dx=0 solve for dx/dy (Broken Link Removed) I assume you want dy/dx. Differentiate both sides of the equation with respect to x. ...
April 10, 2007 by Patti

Intermediate Algebra
Combine like terms: -3x^2+2x-4x^2-9+6x-2x^2+8 Solve for x: 8x-11= -11x+18 Solve for x: -2(x-5)+7=z-8-5x Solve for x: (x-2)/5 - 3/2= (x+1)/10 Translate to an algebra statement; do not solve: Seven times the difference of six and a twice a number yields the same result as the ...
September 29, 2007 by Dawn

Math
I just don't understand this question: h(t)=A*b^x h(3)=4 h(5)=40 Solve for b Would you plug 3 into the x and set it equal to 4? (4=A*b^3) How would you solve for that because in the next question they go on to ask you to solve for A using the b you found... Almost looks like ...
August 30, 2006 by Nicole

Math - Algebra
Simplify and solve for x=2 and y=5. Please remember to group like terms. 1. 3x - 2y + 4x -3y 2. y + x - y - x 1. 3x2 - 2x5 + 4x2 - 3x5 6 - 10 + 8 - 15 2. 5+2-5-2 7-5+2 yah i think that's how to solve it, basically sub in the x and ys and solve
May 17, 2007 by Taariq

Math Analysis
6. Prove that f(x) = (3/4)x^4 + 2 and g(x) = (4sqrt(108x-216))/3 are inverses. I know you solve it with composite functions f(g(x)) and g(f(x)), and I solved f(g(x)), but I can't seem to solve g(f(x)) to equal x, like it should. Can someone show me how to solve this? Thanks :)
October 24, 2009 by Emily

Math
1. Solve the equation. -6g = 42 a. g = 7 b. g = -7 c. g = 252 d. g = -252 2. Solve the equation. x/8 = 16 a. x = 128 b. x = 24 c. x = 8 d. x = 2 3. Solve the equation. 12m = 14.4 a. m = 120 b. m = 12 c. m = 1.2 d. m = 0.12 4. Solve the equation. x/3 = -15 a. x = 45 b. x = -45 ...
September 1, 2015 by Malasia

Algebra
To solve the system of equations, which expression could be substituted for x into the first equation? 3x-5y=14 x+4y=10 a)10-4y b)4y+10 c)(1/4)x+(5/2) d)(-1/4)x+(5/2) I have another problem just like this one so if you could explain how to solve this one I can (hopefully) ...

English
1. He can not solve the math problem. 2. He cannot solve the math problem. 3. He can't solve the math problem. 4. He could not solve the math problem. 5. He couldnot solve the math problem. 6. He couldn't solve the math problem. (Are they all grammatical? What about #5? Is it ...
July 16, 2013 by rfvv

algebra
solve for the indicated letter. y=5x, solve for x d=55t, solve for t
June 7, 2014 by Lisa

Math
Solve P=P(base 0)e^kt Solve for t? I have no idea how to solve this
October 17, 2014 by Eiban

Math
Solve the system by addition or substitution. 3x – 4y = 8 6x – 2y = 10 Please get me on the correct track for 3x -4y =8 x=4, y=1 for 6x - 2y =10 x= 2, y= 1 Solve one equation for x. 3x = 4y + 8 x = (4y + 8)/3 Insert that value for x in the other equation and solve for y. ...
May 20, 2007 by Amanda

algebra
solve for the indicated variable: a. temperature formula solve for F: K=5/9(F-32)+273 b. annual interest rate solve for R: A=P+Prt im posting this the second time, but the first reply i got didn't help much :( can you show me how to do at least one of these?? thanks
September 24, 2009 by narmin

a) Solve for x: 2x² + 5x = 3 b) Solve for x and y: x + y = 4 and x² + y² + xy - 12 =0 c) Solve for x: 8 2x + 3 = ½x² d) Factorise: 6x² - 7xy - 3y² e) Factorise: 4x³ + 5x²y - 4xy² - 5y³
February 15, 2017 by Lassen

Algebra Problem
I've gotten confunsed. Please help. Solve: 2y-a = a + 3b ____ ______, for y 3 4 Please show how to solve this. If you mean (2y -a)/3 = (a + 3b)/4 then 2y - a = (3/4) (a + 3 b) 2y = (7/4) a + (9/4) b y = (7/8) a + (9/8) b f(x)=x(squared)-4x+9 solve for x
August 30, 2005 by amy

Math
Factor the polynomial P(x)=x^3-2x^2-13x-10. Then solve the equation P(x)=0. This is what I got: P(x)=(x+1)(x^2-3x-10) P(x)=(x+1)(x-5)(x+2) When it says solve the equation P(x)=0 does it means solve for x? If so then x=-1 or 5 or -2 Correct??? please and thank you
April 3, 2012 by Anonymous

equations & inequalities
1.simplify this expression 4p+9+(-7p)+2=? a.3p+11 b.3p+7 {c.-3p+11} d.11p+11 2.solve this equation 4y+228=352 a.y=-31 {b.y=31} c.y=145 d.y=3 3.solve this inequality 3p-16<20 a. p<1/3 b. p<1 1/3 c. p<12 d. p<-12 4.solve this inequality 3b-7<32 a. b<5 b. b&...
December 15, 2013 by cali

Algebra
Simplify this expression (DO NOT solve for x) 5x+6(x+2)-8(x-3) I have no clue, can someone tell me how to solve it? Please don't tell me the answer, only how to solve it. Thanks :D
January 15, 2015 by Me

calculus
I am suposed to apply L'Hospitals rule to solve. I can't seem to solve it tho. could someone explain the steps to me? Thanks! the limit as x approaches infinity of: xe^(1/x)-x This is what I got so far: xe^(1/x)-x x(e^(1/x)-1) e^(1/x)-1/(1/x) Now its in the right form to solve...
April 14, 2009 by Riley

1. Solve for x. 4(x - b) = x b = 4/3x b = 3/4x x = 4/3b x = 3/4b 2. Solve for y, then find the value of y when given x = 2. 6x = 7 - 4y -12 7/4 19/4 24 I need help solving these. Can you please explain how to solve these problems?
October 2, 2013 by Charlotte

Algebra
Solving quardratic equations using factoring. 2X^2+2X-4=0 The book says the answer is -2,1. I got the -2,1 but not in the order of -2,1. I used FOIL to solve. When I use -2,1 I don't can not solve. When I use 1,-2. I can solve. I am not clear.
May 23, 2008 by G

Math
Use your knowledge of exponents to solve. a) 1/2^x=1/(x+2) b) 1/2^x>1/x^2 So I know that these functions are rational functions.. and I am trying to solve for x. I tried to solve them by I keep getting stuck with the exponent 2 which is the exponential function.. Help please
June 7, 2009 by Halle

algebra
how would i work out the following problems solve each formula in terms of the given variable 1. 5d-2g=9 ;g The formula A=2h(l+w) gives the lateral area a of a rectangular solids with length l, width,w and height h. 2. solve this formula for h 3. solve this formula for l The ...
September 22, 2008 by jessica

math
Eight subtracted from six times a number is -134. What is the number? A) Translate the statement above into an equation that you can solve to answer this question. Do not solve it yet. Use x as your variable. solve for x
February 21, 2013 by kelly

maths
1.solve the set of linear equation by matrix method.a+3b+2c=3,2a-b-3c=-8,5a+2b+c=9 solve for a,b,c 2.solve by Guassian elimination method, (a)a+2b+3c=5,3a-b+2c=8,4a-6b-4c=-2, (b)
March 3, 2015 by emmanuel konwei

Need all the help i can get
Hi i'm pretty new to this and i don't know what to do?So i put these questions up im not sure if my answers will show up because i used color letters, but i need help checking and explaining steps N 108 is 36% of what number? Write and solve a proportion to solve the problem. ...
January 7, 2016 by Rainbow Dash

1. Solve the system of equations y=2x^2-3 y=3x-1 a)no solution b)(-1/2,5),(2,-5/2) c)(-1/2,-5/2),(2,5)**** d)(1/2,5/2),(2,5) 2. How many real number solutions are there to the equation 0=-3x^2+x-4? a)0 ***** b)1 c)2 d)3 3.solve the equation by completing the square. if ...
March 19, 2015 by Kendra

algebra
i need help with these problems (either a solution or how to plug them into a graphing calculator): 1) Solve by substitution or elimination 4/x + 1/y + 2/z = 4 2/x + 3/y - 1/z = 1 1/x + 1/y + 1/z = 4 2)Solve the system of equations by substitution. x^2 + y^2 = 25 x - y = 7 3) ...
April 5, 2011 by Alyssa

Math
How do you solve for d? 16d - (4 - 5d) = -67 How do you solve for m? 2/7(4m - 18) = 12 How do you solve for b? 1/4(5b + 11) = 19 How do you solve for x? -5/6(9 + 2x) = 40
September 26, 2013 by DIana

Math: ALGEBRA
How to solve this??? Solve for x. a+b= a+xy Solve for w. 2w+2h+L=p Solve for r. r(s+t)=u
October 8, 2014 by Matt

Algebra II
1.Solve: x(x2 + 16) = 0 2.Solve: 2x3 + 6x2 – x – 3 = 0 3. Solve: 2x = x2
January 11, 2008 by Christian

algebra
solve the equation for x -2(2x-2)=2x for y 9x+y=9 solve theinequality 2x-6<8x+18 solve 0.14-0.01(x+2)=-0.02(3-x)
November 8, 2014 by gary

Math
How do I solve these problems, I really need help. Solve by substitution method 6x+5y=17 x=53-8y Solve by elimination method 2x+3y=5 4x+6y=10
October 17, 2008 by Amy

How do I do this.?(Math.)
Use the Substitution method to solve the system of equations. y - 2x = -5 3y - x = 5 Solve one of the equations for x or y. Let's solve the first one for y: y - 2x = -5 y = 2x - 5 Now let's substitute 2x - 5 for y in the second equation to solve for x: 3(2x - 5) - x = 5 6x - ...
February 5, 2007 by Margie

Maths
solve the following pair of simultaneous equation: (x/a)+(y/b)=1 (x/b)+(y/a)=1 can someone help please?i have no idea how to solve it =( x/(ab) + y/b^2 = 1/b x/(ab) + y/a^2 = 1/a Subtract one from the other y(1/b^2 - 1/a^2) = 1/b - 1/a y(1/b + 1/a)(1/b - 1/a) = (1/b - 1/a) ...
July 11, 2007 by Emma

subsitution method
Can some one show me how to use the Substitution method to solve the system of these equations. x + y = -4 x - y = 2 x + y = 10 y = x + 8 on the first set. Solve for either x or y in either equation, then put that value into the other equation. Example: x + y = -4 x - y = 2 ...
July 1, 2007 by mike

math
please anwer these: 1) how can i multiply and divide polynomials containing radicals? 2) how can i solve radical equations? 3) how can i solve qudratic equations by factoring ? 4) how can i solve quadratic equations graphically ? thank you !!!!!
August 13, 2014 by chen

algebra
How do I solve this problem? (4x + 2)(x-3)=0 Set 4x+2 = 0 and solve for x. set x-3 = 0 and solve for x. You will have two answers for x.
May 3, 2007 by pat

Maath
Solve the equation for the indicated variable. 4x-3a-(10x+7a)=0 solve for x This is all I know how to do & don't know if it's even right. 4x-3a-(10x+7a)=0 solve for x 4x-3a-10x-7a=0 -6x-10a=0
August 24, 2010 by Courtney

Precalculus
Explain how to do these please. 1. solve x=log(base2)*1/8 by rewriting in exponential form. 2. Solve log(3x+1)=5 3. Solve log(base x)8=-1/2
January 29, 2012 by Melinda

Algebra
91. Find the domain of: y=-3x+1 a. all negative numbers b. x>0 c. all real numbers d. x=3 Can someone please show the work and how to solve this problem. There are many of these in my lessons and I don't understand how to solve them. Do you solve for x?
May 7, 2010 by y912f

Trigonometry
Hi, I really need help in understanding how to solve trig equations. How do you solve this equation? Solve the equation on the interval 0 < or equal to x < or equal to 2pi. sinx = (square root of 3)/2 I appreciate your help. Thank you!
March 17, 2013 by Leah

Solve the following equation by graphing the related function. 1. 4x^2 + 8x = 32 A: ? Use the Zero Product Property to solve the following equation. 2. x(x + 3) = 32 A: ? 3. Solve 3x^2 + 5 = 21. Round to the nearest hundredth. A: x = 5.33 x = 5.0 or 5?
May 12, 2014 by Victoria

math
solve the following trig equation : 7 = 8sin(1/2)x. I can solve this using the half-angle indentity. But i need to solve this using period and phase change equation. how do i do this?
April 16, 2008 by shan

math
1.solve for p 3(p+q)=p A.q=-2/3p B.q=-3/2p C.p=-2/3q D.p=-3/2q 2. solve for b then find the value of b when a=3 4a=2b-7 A.-9/2 B.5/2 C.19/2 D.17 3. solve for r d=rt A.r=dt B.r=t/d C.d/t D.r=d-t 4. find the width of a rectangle with a perimeter of 90 and a lenth of 15. A.90 B....
September 15, 2016 by oto

Matrh
How do you solve this problem? The avera&e (aritmeticmean)of x and y is 5 and the avera&e of x, y, and z is 8. What is the value of z? (a)19 (b)14 (c)13 (d)11 (e)3 I solved it by addin 8+5=13 So I chose (c)13. But it's wron& and the answer is (b)14. How did they arrive at that...
May 20, 2007 by Mack

math 12
i got the wrong answer from the back, and i know that imnot dooing it right. please try to help me on this hard question. THE ANSWER WAS:16 solve the equation: 3log(x-15)= (1/4)^x i don't know how to solve it algerbrically. the teacher doesn't want us to solve it graphically. ...
June 2, 2011 by kajal

math correction
solve: x -8 = 4 + 8 +8 x = 12 my answer is x = 12 solve: 80 = 10x -- --- 10 10 8 = x my answer is x =8 solve: 3x= -12 -- --- 3 3 x = -4 my answer is x = -4 Solve: 12 -3x = 9 -12 -12 -3x = -3 --- --- -3 -3 x = 1 my answer is x = 1 ok on all of them.
January 11, 2007 by jasmine20

Math- Algebra
hi wat method would i use and how would i solve this system of equations x^2+xy=3 3x^2+2xy-2y^2=7 In your first equation, solve for y... you should have xy= -x^2+3... divide this by x... so y = x^2+3/x plug what you solved for y into your second equation and then solve for x
May 21, 2007 by Anonymous

Trig
h t t p : / / m a t h c e n t r a l . u r e g i n a . c a / Q Q / d a t a b a s e / Q Q . 0 9 . 9 9 / a n g e l a 2 . 2 . g i f give that picture how do I solve for (h) I know that you you From the diagram tan(3.5) = h/(13 + x) and tan(9) = h/x. Solve the second equation for x...
August 27, 2009 by Trig

Pre-Algebra
Can someone please show me how to solve these problems step-by-step so that I can understand how to do them? 1.Use inverse operations to write a related inequality and solve for the variable: d/6 < 12 2.Use inverse operations to solve the inequality: m-27=85 3.Use ...
May 1, 2009 by mysterychicken

Calculus - Seperable Equations
Solve the separable differential equation (dy/dx)=y(1+x) for y and find the exact value for y(.3). dy/dx = y(1+x) dy/y = (1+x)dx Integral (dy/y) = Integral (1+x)dx ln (y) = x + (1/2)x^2 + C y = e^(x + (1/2)x^2 + C) y(0.3) = e^(0.345 + C) I am stuck here. How do I solve for C ...
June 26, 2007 by COFFEE

Help, Math.
Solve: 3e2x + 2 = 50 a. ln 8 b. ln 0.25 c. ln 14 d. 0.5ln 16 --------- Solve: 1 = 7 ex a. ln 1/7 b. ln 1/7 c. ln 7 d. ln 7 ------------ Solve: e3x = 8 a. ln 5 b. 3 ln 8 c. ln 8 3 d. ln 3 8 ---------- ln 1 √ e a. -√e b. -1 2 c. 1 e d. 1 2
May 21, 2013 by Holly

algebra II
14. Solve the inquality -3(r-11) + 15 equal or greater than 9. 15.Solve the inequality: -2 < 4z = 10 lessthan or equal to 12. 16. Solve the inequality 2x-5 less than or equal to 10 or 33 - 4x < 5 17. Solve the inequality 3 | m -4 | > 6
May 4, 2008 by PJ.

Math
HOW WOULD I SOLVE SOMETHING LIKE THIS, IT IS AN EXAMPLE I MADE UP. ITS SIMILAR TO THE ONE I HAVE. I DON'T GET IT. THERE ARE TWO UNKNOW VARILABLES AND SOME NUMBERS. HOW DO I POSSIBLE SOLVE THIS. MAYBE I DON'T HAVE TO SOLVE ANYTHING THAT IS WHAT I WAS THINKING. QUESTION: 2x^2-...
February 1, 2007 by Sammy

Algebra
Hello, can someone tell me if I got the following solve and check work correct? 1. solve and check 1/2x = 3 5/6 1/2x = 3 5/6 1/2x = 23/6 3x = 23/3 x = 23/3 And to check for it 1/2x = 3 5/6 1/2x = 23/6 46x = 6 x = 6/46 x = 3/23 2. Solve and check 3x + 2 / 2 = 7 3x + 2 / 2 = 7 ...
April 13, 2010 by Tamir

Algebra 2
How do I answer this f(x) = x - 3 (x + 4)^(1/2) and am asked how to solve for x when y = -5 I have no idea how to do this and know that I could just solve it by guess and checking but I want to know how to do this algebraically when plugging in the -5 and trying to solve for x...
May 26, 2009 by Dylan

ALGEBRA 1!PLZ HELP!
Use the Substitution method to solve the system of equations. y - 2x = -5 3y - x = 5 Solve the first equation for y. y = 2x-5 Substitute that for y in the second equation and solve for x. Then use the value of x to substitute back into the first equation and solve for y. Post ...
November 6, 2006 by SANDRO!

1. Evaluate 4^(log base4 64) + 10^(log100) 2. Write 1+log(base2)x^3 as a single logarithm 3. Write log(base b)√(x^3 y z^6) 4. Solve log(base 2)x-log(base 2)6=log(base 2)5+2log(base 2)3 5. Solve 3^(2x) = 9(81^x) 6. Solve 3^(2x)=7^(3x-1). Round answer to two decimal places...
December 19, 2013 by Jessie

Math
I need help with these three problems. They are on a Study Guide and I need some refreshing up of how to do them. 17. Solve the equation using the zero product property... -8n(5n+3) 19. Solve the equation by factoring 5z^2-2z-3=0 20. Solve the equation by completing the square...
May 26, 2009 by Amy

math
I need help with these three problems. They are on a Study Guide and I need some refreshing up of how to do them. 17. Solve the equation using the zero product property... -8n(5n+3) 19. Solve the equation by factoring 5z^2-2z-3=0 20. Solve the equation by completing the square...
May 26, 2009 by Amy

Math
I need help with these three problems. They are on a Study Guide and I need some refreshing up of how to do them. 17. Solve the equation using the zero product property... -8n(5n+3) 19. Solve the equation by factoring 5z^2-2z-3=0 20. Solve the equation by completing the square...
May 27, 2009 by Amy

MATH
in a contest, Bello. Adamu, and Lawi are asked to solve a mathematical problem. the probability that they solve the problem correctly are 1/5, 2/3, and 2/5. find the probability that:(1)None of them solve the problem correctly(2)At least one of them solve the problem correctly...
January 13, 2016 by biliyaminu

math
1. solve by using the quadratic formula. 5x^2+x=3 2. solve by completing the square. x^2=5x+2 3.solve by using the square roots method. 5(x-2)^2=3
March 30, 2008 by mary

Precalc
I have a couple questions, I need to know how to solve these type of problems. X^2 -4< X + 16 5/n+2 - 5/n = 2/3n 2X^3-x^2-6X + 1/ X^2 + 5x - 8 1) rearragne the terms to get x^2-x-20<0 (x-5)(x+4)<0 which means that one term can be negative, or -4<x<5 check that. ...
June 14, 2007 by <3 A

Math
The graph of the equation y=4-x consists of all the points in the coordinate plane that satisfy the equation. List 5 points that satisfy y= 4-x. Also, what do you think is the minimum number of points you need to plot in order to draw the graph of y=4-x. Please explain Set y=0...
November 21, 2006 by victoria

math
is these answers correct? solve the equation: 2x^2 +8x - 17=(x +2)^2= x=-7,3 solve (v-5)^2-63=0, where v is a real number, simplify answer as much as possible. v=3 square root 7+5,-3 square root7+5 v``12.93725, -2.937254 use the quadratic formula to solve for x. 4x^2x-4=0 =x=1...
October 31, 2010 by lee

Math
1) Solve: 8x ¨C (6x + 4) = 8 x = -2 2) -7x > 1/15 the solution set is: {x | x > -105} 3) Solve 5> -4x + 4 or 10 ¡Ü -4x +3 the solution to the inequality is: [-¡Þ, -7/4] U [-1/4,¡Þ] 4) Use < or > to make the statement true: -9 < 3 5) Graph the ...
November 5, 2008 by Algebra HELP!!!

Algebra: Steve
I already asked this question,I just wanted to clarify the answer. Problem: The polynomial f(x) has degree 3. If f(-1)=15, f(0)=0, f(1)=-5, f(2)=12, then what are the x-intercepts of the graph of f? Steve: clearly, f(0) = 0 so, f(x) = ax^3+bx^2+cx = x(ax^2+bx+c) -1(a-b+c) = 15...
November 15, 2014 by Trish Goal

math right triangle
the hypotenuse of a right triangle is 1 inch longer than one leg and 8 inches longer than the other. Find the length of each side of the triangle. Let l1, l2 be the legs. l1^2 + l2^2 = h^2 but h= l1+1 and h= l2 + 8 solve these for l1, l2, put them in the first equation and ...
December 5, 2006 by darren

I need help because I don't understand how to solve this equation. 37. x/a - 1 = y/b for x So... does it mean solve for x? 39. V = 1/3 * pi * radius^2 * h for h So... does it mean solve for h? As you can see, I am really confused. Please help.
November 4, 2014 by Alexandra

Physics
A fully loaded elevator weighing 2000 lbs accelerates upward from rest, attaining its rated velocity of 20 fps upon reaching a height of 25 ft. Solve for the tension on the cable lifting the elevator. What is the minimum required power of the lifting motor if 10% is allowed ...
August 5, 2015 by Aries

Calculus
Let h(x)= x^3 + 4x -2. Let g(x) represent the inverse of h(x). Find g(14). I know that if (a, f(a)) is on h(x), then (f(a), a) will be on g(x). I also know that if f^-1(a)=b if f(b)=a. I thought that if I could find the x value(s) at which h(x)=14, I would be able to find g(14...
March 31, 2009 by Kelly

math
determine the equation of the line in y=mx+b form that passes through 1. (-8,1) & (-9, 2) 2. (3,7) & (-5, 9) 3, (-4,0) & (4,6) Part B ) For each equation Rewreite the y=mx+b equation in general form Ax+by+c=0 where A is positive b and C are integers In each problem, put in x,y...
February 8, 2007 by thomas

Algebra
PLease ,Please ,Please help me solve this problems #1 Since x = 3y-4, -3(3y-4)+4y = -3 now just solve for y and then x #2 Since x = 4+4y, -(4+4y) = 4y=-4 or something Again, solve for y, then x
October 9, 2014 by Anonymous

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