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bishopbabyy0362 Group Title

im so lost :/ hellppppp pleasee! Write a two-column proof. Given: 7y = 8x – 14; y = 6 Prove: x = 7

  • 2 years ago
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  1. Rosh007 Group Title
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    Ok let us check....... Substitute y = 6 you get \[7 \times 6 =8x -14\] \[ \rightarrow 42+14 = 8x\] \[ \rightarrow 56 = 8x\] \[ \rightarrow x = \frac{ 56 }{ 8 } = 7\]

    • 2 years ago
  2. Rosh007 Group Title
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    thus your asnwer. is proved.... :)

    • 2 years ago
  3. bishopbabyy0362 Group Title
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    wait 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. :/

    • 2 years ago
  4. Rosh007 Group Title
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    here 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...

    • 2 years ago
  5. bishopbabyy0362 Group Title
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    okay 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?

    • 2 years ago
  6. bishopbabyy0362 Group Title
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    im sorry this is difficult for me.. im a little slow :p

    • 2 years ago
  7. Rosh007 Group Title
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    lol ...sorry .lol ok \[7 \times 6 = 42\]

    • 2 years ago
  8. bishopbabyy0362 Group Title
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    your 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)

    • 2 years ago
  9. bishopbabyy0362 Group Title
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    idek if im making any sense right now im trying to help you understand wht i mean :/ lol

    • 2 years ago
  10. Rosh007 Group Title
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    Thank 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

    • 2 years ago
  11. bishopbabyy0362 Group Title
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    yeah 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!

    • 2 years ago
  12. bishopbabyy0362 Group Title
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    and like you said for answer 3 i think that one would be substitution property of equality right?

    • 2 years ago
  13. Rosh007 Group Title
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    yea... It is ..... but we used that property to find the solution of equation... means the point which satisfies both equation

    • 2 years ago
  14. bishopbabyy0362 Group Title
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    yes, but what about all the other steps?

    • 2 years ago
  15. bishopbabyy0362 Group Title
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    im soo giving you a medal !!!

    • 2 years ago
  16. Rosh007 Group Title
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    ..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

    • 2 years ago
  17. bishopbabyy0362 Group Title
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    can you write each one for each step out? please

    • 2 years ago
  18. Rosh007 Group Title
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    7×6=8x−14 →42+14=8x-14+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 ..

    • 2 years ago
  19. bishopbabyy0362 Group Title
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    thank you so much! could yuo help me with one more? its alot easier lol

    • 2 years ago
  20. Rosh007 Group Title
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    oh, god... It was a bitter task.. but it helped me to know two column explanation :)

    • 2 years ago
  21. bishopbabyy0362 Group Title
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    • 2 years ago
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  22. bishopbabyy0362 Group Title
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    it was hard. this online schooling is difficult at times

    • 2 years ago
  23. Rosh007 Group Title
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    What is M... and x reprsnt.... Angles... I studied a long time back.. can you xplain

    • 2 years ago
  24. bishopbabyy0362 Group Title
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    okay 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

    • 2 years ago
  25. bishopbabyy0362 Group Title
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    and im not sure how to set the equation up...

    • 2 years ago
  26. Rosh007 Group Title
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    OK... now I got some Idea.... since BD bisects angle ABC it will b som thing like this|dw: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+2x-2x=4x-2x (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

    • 2 years ago
  27. Rosh007 Group Title
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    And valu of measure ment of angle ABC = 2Y,by substitution of equality and multiplication we get.... It is \[2 \times 44 = 88\]

    • 2 years ago
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