A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 3 years ago
im so lost :/ hellppppp pleasee!
Write a twocolumn proof.
Given: 7y = 8x – 14; y = 6
Prove: x = 7
anonymous
 3 years ago
im so lost :/ hellppppp pleasee! Write a twocolumn proof. Given: 7y = 8x – 14; y = 6 Prove: x = 7

This Question is Closed

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Ok let us check....... Substitute y = 6 you get \[7 \times 6 =8x 14\] \[ \rightarrow 42+14 = 8x\] \[ \rightarrow 56 = 8x\] \[ \rightarrow x = \frac{ 56 }{ 8 } = 7\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0thus your asnwer. is proved.... :)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0wait im lost.. after the first part lol.. so how did you get 42? on the second part? im honestly confused. and it has to be atwo column.. meaning one side has a statement and the other side has.. given.. or something like that. :/

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0here in your question Y = 6 .... that means that to find a solution both equation has to satisfy.. means you have to find a value of 'x' when 'y' is equal to 6... so substitute the value of Y (=6) in 7y = 8x – 14...

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0okay i get that part.. now the other part of the question is for each step.. your suppose to state what method you use.. do you know what i mean?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0im sorry this is difficult for me.. im a little slow :p

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0lol ...sorry .lol ok \[7 \times 6 = 42\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0your killin me lol. okay ill explain what im trying to say.. in a two column proof. it looks a little like this.. Given: <2 is congruent to <4, M<2=110 Proof: m<3 = 70 m∠2 = m∠4 Definition of congruent angles m∠4 = 110º b. ________ ∠3 and ∠4 are a linear pair Definition of a linear pair (shown in diagram) ∠3 and ∠4 are supplementary Linear Pair postulate m∠3 + m∠4 = 180º c. _______ m∠3 = 70º d. ________ (3 points)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0idek if im making any sense right now im trying to help you understand wht i mean :/ lol

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Thank you But can I ask is there any defenition like that... on ly thing is algbic manipulation... th concept be hind this question is explaind in my 3rd answer. I am still confused How the two colum proof can be given in your question since it is only a algebric manipulation.. Do you want me to explain each algbric manipulation on the othr side......??????..I wounder for what step you want explation

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0yeah thats exactly what i mean, for each step, beside it, you write what step you used, like subtraction property of equality etc etc. thank you soo much for helping me on this!

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0and like you said for answer 3 i think that one would be substitution property of equality right?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0yea... It is ..... but we used that property to find the solution of equation... means the point which satisfies both equation

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0yes, but what about all the other steps?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0im soo giving you a medal !!!

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0..in other steps you add both sides + 14... that is adding or subtracting or multiplying or dividing both sides of equality by a number won't affct the value

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0can you write each one for each step out? please

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.07×6=8x−14 →42+14=8x14+14 (using the above proprty ... let us say invariabilty of equality on addition on both sides)) →56=8x (addition of two numbrs) \[\frac{ 56 }{8 } = \frac{x8 }{ 8 }\] (usig the above propety... let us say invariabilty of equality on division on both sides) \[x =\frac{ 56 }{ 8 }\] \[ x = 7\] by division ..

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0thank you so much! could yuo help me with one more? its alot easier lol

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0oh, god... It was a bitter task.. but it helped me to know two column explanation :)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0it was hard. this online schooling is difficult at times

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0What is M... and x reprsnt.... Angles... I studied a long time back.. can you xplain

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0okay we'll do this one together, m equals the measurment of that particular angle. its easier to draw it out i just get stuck on the equation :/ lol

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0and im not sure how to set the equation up...

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0OK... now I got some Idea.... since BD bisects angle ABC it will b som thing like thisdw:1352262445882:dw since angle is bisctd .. each angle(ABD,DBC) will be equal which is Y..(bisection Property) But from your question... 2Y = 8x (since measurement of ABC = 8x) and also from your question measurement of ABD = 2x+22 = Y; But we know 2Y = 8x .. there for Y = 4x...(division) therefore 2x+22 =4x ( substitution of equality equal values can be replavd with out chaging the fuunction) 22+2x2x=4x2x (let us say invariabilty of equality on subtraction on both sides) 22 = 2x (subtraction) x = 11 (division) But we know Y = 4x, by substitution of quality, we get \[y= 4 \times 11\] = 44 which is the value of DBC since Y =since measurement of DBC too

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0And valu of measure ment of angle ABC = 2Y,by substitution of equality and multiplication we get.... It is \[2 \times 44 = 88\]
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.