# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,718 questions, page 416-
## precalulas

solve each equation over the given interval 2x=cosx for all values of x

*asked by sylvia on November 27, 2011* -
## math

55+7*79+9=100 plz solve diffrrent types

*asked by Narendra on January 13, 2016* -
## trig

solve sin x-1=0 for 0degress

*asked by ana on October 15, 2009* -
## Math

I can't figure out how to solve this math problem, please help. 1.4 divided by 36.96

*asked by Anonymous on January 26, 2015* -
## 6th grade

how do you solve a problem when you have one whole # with a whole # and fraction. this is subtracting ex: 16 -10 2/7 ________________

*asked by Sophie on October 29, 2010* -
## Algebra

we need help and the steps to solve 5x-y=18 and 5x+6y=-38. we need the ordered pairs if any. So far we came up with (6,-9). Thanks Team A

*asked by Team A on September 13, 2010* -
## math

Q=3x^2+4y^2 if x+y=7 what is minimum value for Q. I have absolutely no idea how to solve this problem.

*asked by summer on February 12, 2012* -
## math

-5x-2.34=5.9 i got x=-1.648 is that correct what is -13=10-x/2 i don't understand how do you solve this?

*asked by Anonymous on March 4, 2013* -
## Geometry

If the angles of a triangle have the ratio 3:4:5 and you want to know what they are would you go 3x + 4x + 5x = 180 and solve for x?

*asked by Debbie on November 30, 2010* -
## geometry

how would you solve for x in a 45-45-90 triangle if the hypotenuse is 9 square root 2

*asked by bethy on August 1, 2011* -
## Math

How do you solve this equation: 3x-5*√x=2. (√= Is a square root sign)

*asked by Anonymous on August 29, 2011* -
## calculus

Four out of five days were used to create a problem, how many day will it take to solve it?

*asked by Crown on February 1, 2014* -
## Algebra 1

What are two symbolic techniques used to solve linear equations?

*asked by Theresa on August 30, 2012* -
## trig

how do i solve this completing the square problem: 3x^2+12x+10=0

*asked by Anonymous on April 26, 2011* -
## Math

Solve for all possible values of x where O°≤x≤360°. tan x = -1/√3 cos x = 1/2

*asked by Kate on July 17, 2011* -
## Chemistry

Can you please help me solve r1/r2 = sqrt(M2/M1)for M1. My answer: M1=M2r2^2/r1^2 Is this correct?

*asked by Maddy on January 28, 2015* -
## College Algebra

Solve 1/3logP-2logt +2/3logr by condensing it to one

*asked by Anonymous on November 27, 2010* -
## algebra

solve by square root property (8x-3)squared=5

*asked by david on July 10, 2010* -
## math

-5x-2.34=5.9 i got x=-1.648 is that correct what is -13=10-x/2 i don't understand how do you solve this?

*asked by Anonymous on March 4, 2013* -
## maths

solve the equation x³ − 7x² + 36 = 0 , given that one root is double the other

*asked by tabassum on January 22, 2016* -
## math

Can't remember the way to solve for the variable. 5x + 6 = 7x. Answer is 3, but how to do other problems?

*asked by Hannah on November 11, 2012* -
## Math

log2(-3sinx)=2log2(cosx)+1 solve for x

*asked by Sarah on January 12, 2016* -
## 4th grade

What property of multiplication helped solve 1X47=47?

*asked by Anonymous on October 28, 2010* -
## ^th grade math,

using mental math and distributive property solve: 25(12)

*asked by Ann on November 15, 2012* -
## algebra

Solve each equation. Watch for extraneous solutions 5/y-3 = y+7/2y-6 +1

*asked by Joe on July 13, 2009* -
## Math - Algebra

[ (x-3)(x+1) / (3x+11) ] = 0 How would I solve this equation? I don't know how to isolate for x. Answer: 7

*asked by Anonymous on December 12, 2007* -
## math

solve for v round your answer to the nearest tenth 13/7= v/8

*asked by mace on March 4, 2013* -
## Adding and Subtracting Rational Expressions

I would highly appreciate it if someone could solve these forme.I think I typed them out correctly. (n-2/n+4)+(8/[n+4]) (5m+8/[m-1]) - (m-3/[m-1]) (x^2/[x-1]) - (1/[x-1]) (4x+y/[2x+3y])-(2x -2y/[2x+3y]) (x^2+3x+2/[x^2-16] + (3x++6/[x^2-16]) 7/(x-5) -

*asked by mike on May 21, 2007* -
## Trigonometry

solve 2tanx cos2x+1=tan3x+2cos2x

*asked by Season on January 12, 2016* -
## Chemistry

Solve for A and B 0.433= (45.6*A) + (3.152*B) 0.3363= (11.92*A) + (37.675*B)

*asked by Jess on May 2, 2013* -
## precal 2

use law of sines to solve the triangle A=58 degree, a=4.5, b=12.8

*asked by raven on July 31, 2011* -
## math

factoring to solve quadratic equation 5x^2=16x+45

*asked by lori on April 26, 2011* -
## Pre-Calculus

How do you solve the equation(800+x)tan33=xtan35?

*asked by Angie on December 29, 2014* -
## Math

I have to solve this equation by extracting square roots. (x-7)^2=(x+3)^2

*asked by Brittany on December 3, 2007* -
## Math, Algebra

81^3(x+1)=9^2(x-1) Solve this equation by expressing both sides as powers of 3.

*asked by Anonymous on May 12, 2016* -
## trig

solve 2cos^2x-sinx=1, 0 < or equal to x < 2pie

*asked by Calvin on May 17, 2012* -
## mathematics

how to solve exponatins equations by trial and error

*asked by nolusindiso on March 3, 2013* -
## Math

express 53 as the sum of 4 or less perfect squares please help me solve, thanks!

*asked by Packy on April 20, 2010* -
## Math

Anyone help me?? :) How to solve: 5x2 = -(19/2x-1) and 2x2 + 45/2x - 18 = 0 With full solutions? Thank you :)

*asked by Karen on July 25, 2011* -
## Math

Hello, need help to solve this problem 9ex89=? hurry please thankyou!

*asked by Street fighter on April 12, 2019* -
## Math

Assume that y varies directly with x, then solve. If y=-18 when x=6,find x when y=6

*asked by Chey on May 12, 2016* -
## Math

How do I solve 2sin4x cosx = 0 in the interval [0, 2pi)?

*asked by Anonymous on October 30, 2015* -
## math

Solve the equation for x 30x+10x-40=16x+8

*asked by diego on September 4, 2012* -
## algebra

Solve equation using quadratic formula x^2+4x+3=0 is answer 3,1 ?

*asked by Melissa on July 20, 2009* -
## Algebra

how can you solve average rate of change in f(x)=4x^2+9 in following points? A) (c,g) (r,u) B) 2x+h

*asked by Sam S. on January 15, 2016* -
## math

5/(w-3) Solve for w. w= I don't understand. Please help. Did I copy this incorrectly or something?

*asked by Nik on September 26, 2013* -
## CALC

Solve the Equation: 1. 2^x + 2^-x = 5 2. Log2x + log2(4 – x) = 0 thanks. i'm not sure how to approach this at all.

*asked by Jess on July 22, 2009* -
## Math, Algebra

81^3(x+1)=9^2(x-1) Solve this equation by expressing both sides as powers of 3.

*asked by Anonymous on May 12, 2016* -
## Math, Algebra

81^3(x+1) = 9^2(x-1) Solve this equation by expressing both sides as powers of 9.

*asked by Anonymous on May 12, 2016* -
## trig

How would i solve this equation in Radians: cosx + sinx = 0

*asked by Kylie on December 19, 2010* -
## Algebra2

How do I solve this rational exponent equation? (2x)^1/2 = x - 4 Thanks in advance ^^

*asked by Lily on March 13, 2012* -
## Math

Write the inequality and solve: The product of a number and 7 is less than 28

*asked by Ann on April 27, 2014* -
## Math

How you solve this in inequality form? Six less than or equal to the sum of 4 and -2x.

*asked by Jake on September 25, 2013* -
## MATH

how do i solve this into a proportion, 3oz for $1.65; 5oz for x dollors

*asked by jordan on December 18, 2010* -
## Math

S= L(1-r), solve for r I tried both distributing L and dividing by it, but I am not sure which way is correct. Any help would be much appreciated.

*asked by Ryan on September 14, 2015* -
## Finite Math

Solve the matrix equation AX =B for X using: A= [ 2 -3] B= [4 ] [ 1 5] [2 ] (theres a blank space between the 4 and the 2)

*asked by Mike on July 23, 2009* -
## Algebra II

Solve for x. Give your answer using interval notation. a. |2x-3|¡Ý 12 b. 9-2|x+1|

*asked by Sue on September 12, 2010* -
## Math

I need help with this problem. I tried to solve but I failed each time Question: bx+3/5=-6

*asked by oof on May 3, 2018* -
## physics

how do i simplify the equation: v^2=Vo^2+2ax to solve for a? a=acceleration

*asked by ashley on February 4, 2010* -
## Math

Solve the equation for x. 30x+10x=40=16x+8

*asked by Stephanie on September 4, 2012* -
## Algebra

Use the sqaure root property to solve the equation. 7x^2-4=0

*asked by Jaya on October 23, 2011* -
## Math asap

Explain a strategy you could use to mentally solve this problem? 33 1/3 of 48

*asked by Soamy on May 15, 2012* -
## math

Solve the following and express the answer in scientific notation: 10^3 x 10^4. A. 10-^1 B. 10^1 c. 10^6 D. 10^7 I say D

*asked by shana on November 7, 2012* -
## algebra

plz solve factor trinomial a^2+10a+16

*asked by rr on May 18, 2012* -
## math

Solve the equation cos3x=cos2x for 0¡Üx¡Ü360

*asked by Sarah on June 12, 2014* -
## calculus 2

How to solve the definite integral of(3x+pi)cos3xdx from [pi over6,pi over 3]

*asked by bern on December 3, 2017* -
## Literal Equations

y + 2x = 5; x = -1 How do I solve for y? What I did was move y to the other side and divide all the values by 2. So, I first got x = 2.5 - y/2.

*asked by Anonymous on September 27, 2013* -
## Data Analysis

I have a mathematical problem that I don't know how to solve in Excel, where might I go for help?

*asked by Bryan on July 18, 2009* -
## Algebra 1

Solve 11x-7

*asked by Esther on December 17, 2010* -
## functions 12

solve (x^3)+(12x^2)+(21x)-(4)=(x^4)-(2x^3)-(13x^2)-(4) the answers are x=-1,-3,7,0 but i need to know how to do it

*asked by kerry on October 22, 2011* -
## Math

How would I use Distributive property to rewrite each expression then solve 35 x 21

*asked by Rebekah on November 18, 2008* -
## math

v = h(6 - (1/3)(2 - (2 h/5))^3 ) i try to solve this equation and i got (350+4h^2)/75 im not sure if this is correct please check it for me!

*asked by kk on February 19, 2009* -
## Math

solve for x:3x2+2x+6=10(correct to two decimal digits)

*asked by Tabisa on October 30, 2010* -
## math helpppp !

Solve the equation and check soultion 2(13t-15)+3(t-19)=0

*asked by Anonymous on June 9, 2014* -
## 5th grade math

can anyone solve this problem for me? 2cm 72mm + 69 mm =_________

*asked by Bella on November 18, 2008* -
## algebra

Solve equation by using the quadratic formula -3x2-2x-5=0

*asked by Melissa on July 20, 2009* -
## Albebra

c squared-4c-12=0 we have to solve each equation by completing the square.

*asked by Ron on December 4, 2007* -
## algebra

please solve 5u^8v-6uv^5+6u^8v-5uv^5 collect like terms

*asked by rr on May 15, 2012* -
## algebra (solve for y)

0=e^(2y)-e^(y) Need to solve for y here, don't understand why answer is -ln(2) in the book. Thanks.

*asked by David on March 4, 2014* -
## Functions

Solve sin^2x - 2sinx - 3 = 0 on the interval xE [0, 2pie]

*asked by SHINee on November 14, 2013* -
## Algebra 1

How do you solve multi-step inequalities with fractions?

*asked by Skippy on October 19, 2009* -
## Math

Explain a strategy you could use to mentally solve this problem? 33 1/3 of 48

*asked by Anonymous on May 15, 2012* -
## Math -

8x + 14y = 24 6x + 7y = 10 Solve for x & y I tried multiple times but I just can't seem to get the right answer.

*asked by Kathy on January 27, 2017* -
## maths

how to solve cos70/sin20+cos57cosec33-2cos60?

*asked by Anonymous on July 27, 2011* -
## Science-Chemistry

Can you please help me solve r1/r2 = sqrt(M2/M1)for M1. My answer: M1=M2r2^2/r1^2 Is this correct?

*asked by Maddy on January 28, 2015* -
## Trigonometry

Solve the equation for all values of x. 2sin(2x)-√3=0, on the interval [0,2π).

*asked by AwesomeGuy on February 28, 2013* -
## math

Solve the following and express the answer in scientific notation: (5.4 x 10^4) x (4.5 x 10^8) A. 2.4 x 10^10 B. 24 x 10^11 C. 24 x 10^12 D. 2.4 x 10^3 I say D

*asked by Drew on November 7, 2012* -
## Math

Solve for the variable: 17d-16=-43d-4 I got d= 1/3 but I'm not sure.... probably wrong

*asked by Cate on May 26, 2012* -
## math

Solve the equation using the addition property of equality. p – 1 = 4

*asked by loretta on January 24, 2014* -
## Algebra 2

Solve 5x^2 − 34x = 0 by factoring. What is the smaller answer?

*asked by Anonymous on November 10, 2014* -
## math

Solve the following and express the answer in scientific notation:(3.5 x 10^6 / (4.2 x 10^8) A . -8.3 X 10^-3 b. 8.3 X 10^3 c. 8.3 X 10^-2 d. 8.3 X 10^-3 I say A

*asked by shana on November 7, 2012* -
## algebra II

use alaytical and graphical methods to solve the inequality. (3x+6/7x^2+5) > 0

*asked by help on July 10, 2011* -
## math

the product of a number and 7 is at least 28. write and solve the inequality.

*asked by tiffany on February 9, 2017* -
## math

Solve the simultaneous equations: 3x-2y=19 2x+3y=4 Do i create a 3rd eq like this? 6x-4y=38 and where do i go from here?

*asked by Destiny on June 24, 2009* -
## Math 2 pLEASE HELP

y+2/y=1/y-5 *Please solve the rational equation. Done the same way as the previous post.

*asked by Margie on March 4, 2007* -
## math

Solve the following and express the answer in scientific notation: (5.4 x 10^4) - (2.5 x 10^6) A. -2.45 x 10^6 B. 2.45 x 10^6 C. -2.45 x 10^8 D. -2.44 x 10^2 I say D

*asked by shana on November 7, 2012* -
## math

Solve the following and express the answer in scientific notation: 10^3 x 10^4 x 10^-2 A. 10^5 B. 10^6 C. 10^7 d. 10^8 I say A

*asked by shana on November 7, 2012* -
## Math

Solve the logarithmic equation for x. Log3(x^2 − 5x − 9) = 3 I Have no idea

*asked by Anonymous on November 22, 2011* -
## math

The volume of a sphere of radius r is V=4/3πr^3.Solve for r.

*asked by Andrea on April 12, 2018* -
## alg 2.

solve. we can use a calculator on this part... 2e^-x+4=21. how do i do this problem. i know that you subtract 4, but what do you do after that?

*asked by Miley on May 19, 2008*

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