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anonymous
 5 years ago
solve by elimination
0.3x0.2y=4
0.4x+0.3y=1
anonymous
 5 years ago
solve by elimination 0.3x0.2y=4 0.4x+0.3y=1

This Question is Closed

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1muliply by 10 to get rid of the decimals... that will make it look less intimidating

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.13x2y = 40 4x +3y = 10

Yuki
 5 years ago
Best ResponseYou've already chosen the best response.0if you multiply 40 on the first eqn and 30 on the second, you can see which ones can be eliminated

Yuki
 5 years ago
Best ResponseYou've already chosen the best response.0your idea is to make the coefficients of either x or y to be equal

Yuki
 5 years ago
Best ResponseYou've already chosen the best response.0for most elimination problems, that will work

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1to eliminate the x variables; *4 the top and *3 the bottom...then subtract

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.112x 8y = 160 12x +9y = 30

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1we could combine these steps by mulitply one equation by a negative instead... 12x 8y = 160 12x 9y = 30  17y = 190 y = 190/17

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.012x8y=160 12x9y=30 how did you get those

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1by subtraction...... 12x 8y = 160 12x 8y = 160 (12x +9y = 30) means 12x 9y = 30  

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1tell me: does this equal out? 5 5 (4) +4   ???

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1thats all i did..... just with more numbers involved

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0how did you get the 12x 8y = 160 & (12x +9y = 30)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1elimination means 'get rid of something'...right? the only way to get rid of something; to eliminate it; is to get it to zero... otherwise there is something still there right?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1you are given 2 equations and are asked to eliminate something.... that would either be the xs or the ys right? I choose the xs cause they were in front.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1do you recall that in an equation..whatever you do to one side has to be done to the other to keep it equal?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.15+3 = 8 when we multiply this by 4 is it still equal? 4(5+3 = 8)..... 20 + 12 = 32 ???

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1do the variables make a difference to it? 4(5x + 3y = 4)......20x +12y = 16...still equal??

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1we are not changing the 'value'...just the form, its shape, the way it looks..... the value remains the same. right?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1so lets use this to our advantage.. we want some part of your equation to cancel each other out... what wer ethe equations again?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.10.3x0.2y=4 0.4x+0.3y=1 we can multiply both equation by 10 to get rid of the decimal and make it easier to look at right? we change the shape; but not the value

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.13x  2y = 40 4x +3y = 10 we good here?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1we have no terms that are the same...so we have to modify some more..... to get rid of one of them.....or rather a set of them.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1if we pick 'x'...what value do 4x and 3x have in common?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1x is not a 'value' :) 4x and 3x..... do they have 12x in common? 8x? 29x?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1x is a valued pick; but that makes things messier lol

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1valid pick is what its spose to say...

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.14x(3) = 12x 3x(4) = 12x.....right?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1so the top can be *4; and the bottom *3 4(3x  2y = 40) 12x 8x =160 3(4x +3y = 10) 12x +9y = 30 havent changed anything but the way they look correct?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1but if we add these together...nothing is eliminated is it?... what do we have to do to get an elimination now?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0wouldnt x be eliminated

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1how? 12x + 12x = 24x..... that aint zero..

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0your right i was thinking bout 12x +12x continue plz

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1thats right... we need to change the way one of them looks again to get a 12x... 12x 8x =160 12x 8x =160 1(12x +9y = 30) 12x 9y = 30..now were good to go

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1can we eliminate now?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1we get: 17y = 190..... solve for y y = 190/17. right?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1since we have a solid value for y...use it to find x

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0wait how does 190 become 190 and 17 becomes 17

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1the negative doesnt care what its attached to..... any (+)() combonation results in a ()...right? does 190/17 equal something different than 190/17?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1the proper ettiquiette is to put the sign to the top...

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1but in some cases its good to know that you can move it around

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1what wouldve hapened aif we combined steps?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1.4(.3x .2y = 4) .12x .08y = 1.6 .3(.4x+.3y =1) .12x .09y = .3  .17y = 1.9 y = 1.9/.17 = 190/17

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.10.4x+0.3y=1 .4x + .3(190/17) = 1....solve for x

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.14x = 10 + 570/17 4x = (170 + 570)/17 4x = 400/17 x = 400/4.17 = 100/17

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.14.17 is a lazy way of writing 4*17

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0how did yiu get 570/17

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1i used 3(190/17) instead of .3(190/17) 3(190) = 570   17 17 4x  570/17 = 10 4x = 10 + (570/17)...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oh ok i was doing it by .3

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1:) .3 was fine, but you would have had to change the decimal eventually

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.11/.17 cahnges to 100/17

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1.4x + .3(190/17) = 1 .4x  57/17 = 1 .4x = 1 + (57/17) .4x = (17+57)/17 .4x = 40/17 x = 40/(.4*17) x = 400/(4*17) x = 100/17

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1i think i see you trying to get rid of the 17 on the bottom :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i just dont know how to do this stuff

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0taking midterms this week these questions are for the practice exam

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.168x  570 = 170 68x = 170 + 570 x = 400/68 x = 400/4 100  =  68/4 17

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1i got a final grade of 89.06%...and it gave me an 'A' for the course ;)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1i dropped 3 writing assignments and still passed with an 'a' lol

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0thats good! right now i have a 77.37%

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0how did you get those answers above 68x....

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1i times everything by 17 to get rid of the fraction...

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.13(190)(17)  = 3(190) (17)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0x=400/68 i divide that by?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1thats why its called getting rid of a fraction ;)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1400/68 has 4 in common..remember 4(17)? and 4(100) = 400

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1divide them both by 4

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok now that way makes sense to me

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1you seem to see numbers and math is a solid concrete building that cant be moved or messes with. but its really more like silly putty...bend it to your will :)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1algebra has 5 rules: and only 5 rules...

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.11. numbers can be moved around (commutative) 2. numbers canbe grouped in different ways (associative) 3. every number has an evil twin (inverse). 4. there is one number that changes nothing (identity) 5. distribute numbers thru paranthesis (distributive)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i will have to make a note of those

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.13 and 4 are split in 2 by some people to get an additivie inverse/multiplicative inverse and an additive indentity/multiplicative identity

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1tell me; the 1st rule says we can move number around... 45 is the same as 5+4 right?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.110 + 6 is the same as 6  10 right? when you move numbers...pack their luggage, there signs :)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1does grouping matter? 3*(4*5) is the same as (3*4)*5 right?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.13+(56) the same as (3+5)6? but you gotta keep an eye out for this sometimes....

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1356 ^ never split a negative/subtractionwith a parenthesis

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.13+(56) is the same as (35)6

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1subtraction and division are make believe..... there is only addition and multiplication that is real.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1the evil twin rule.... accounts for subtraction and division...

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1what is the evil twin of 15? its 15 the evil twin of 3 .... is 3

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1the evil twin of 6, when multiplying is 1/6 tho..... thats why some people split the rules

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1additions evil twin is the opposite of a number; 9 ; 9 multiplications evil twin is the upside down; 8 ; 1/8

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1recpirocal is an upside down fraction rigt? the evil multplication twin of 3/4 is 4/3 the evil addition twin of 3/4 is 3/4

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1the evil addition twin of 18 is 18 teh evil multiplication twin of 18 is 1/18

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1what is the addition identity number? 4 + ? = 4 9 + ? = 9 17  ? = 17

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1what is the multiplcation identnty number? 6*? = 6 14*? = 14 (5/8)*(?) = 5/8

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1when evil twins meet; they form the identity number: 4+ 4 = 0 12 + 12 = 0 7 + 7 = 0 4(1/4) = 1 2/5(5/2) = 1 (129/17) (17/129) = 1

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1and rule 5; distribution 5(3+6) = 45 5(3) + 5(6) = 45 15 + 30 = 45 45 = 45

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1whatever we can distribute together; we can undistribute as well...which is what we cal factoring quadratic equations
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