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sbuck98

  • one year ago

Can someone help with these problems?

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  1. sbuck98
    • one year ago
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    @Pulsified333 @jim_thompson5910

  2. sbuck98
    • one year ago
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  3. sbuck98
    • one year ago
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    @FireKat97

  4. FireKat97
    • one year ago
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    5. A = 6 + E A + E = 32 so we have a set of simultaneous equations, so lets substitute, 6 + E + E = 32 (Putting the first equation into the second) so 6 + 2E = 32 2E = 32 - 6 2E = 26 so E = 13 Lets put E back into any of the other ones to get A so A = 6 + 13, so A = 19 so emma is 13 and Alex is 19

  5. FireKat97
    • one year ago
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    Now 6, is similar, so have a go and let me know if you're struggling

  6. sbuck98
    • one year ago
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    @FireKat97

  7. sbuck98
    • one year ago
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    @campbell_st

  8. FireKat97
    • one year ago
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    Did you understand my solution to 5, @sbuck98

  9. sbuck98
    • one year ago
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    no @FireKat97

  10. FireKat97
    • one year ago
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    is there a specific part you didn't understand or was it al just too fast and confusing?

  11. FireKat97
    • one year ago
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    all*

  12. sbuck98
    • one year ago
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    I dont get any of it I just arted this class @FireKat97

  13. sbuck98
    • one year ago
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    *started

  14. Pulsified333
    • one year ago
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    @sbuck98 #7 M = 2T + 5 M + T = 65 (so M = 65 - T) 65 - T = 2T + 5 60 - T = 2T 60 = 3T T = 20 and M = 45

  15. sbuck98
    • one year ago
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    what about 6?

  16. FireKat97
    • one year ago
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    ohh okay so, Lets assume Alex is A and Emma is E so when we are told that Alex is 6 years older then Emma, we can say that emma (E) + 6 (because we're adding 6 to her age) equals the age of Alex (A), so this makes our statement true, because we are showing that Alex is 6 years older then Emma 5. A = 6 + E Now for the second part of the question we are told, that if you add up Alex's (A) and Emma's (E) ages you get 32, so we know... A + E = 32 so we have a set of simultaneous equations, so lets substitute, ( we can substitute these two equations to get rid of either A or E so that the question can now be solved). If you look at our first equation, its already in the form of A = ....... this is what we want because now we can put this ..... that A equals, into the A of our second equation to get rid of the A component in our second equation all together, so we get... (6 + E {we put 6 + E instead of A}) + E = 32 (Putting the first equation into the second) and now simplify so 6 + 2E = 32 2E = 32 - 6 2E = 26 so E = 13 Lets put E back into any of the other ones to get A so A = 6 + 13, so A = 19 so emma is 13 and Alex is 19

  17. sbuck98
    • one year ago
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    thats #5 I need number 6

  18. Pulsified333
    • one year ago
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    #6 @sbuck98 x+3x=52 means x=13

  19. sbuck98
    • one year ago
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    ok thank you @Pulsified333 can you help with the next page?

  20. sbuck98
    • one year ago
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    @FireKat97

  21. Pulsified333
    • one year ago
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    #9 3x + 3 = 108 @sbuck98

  22. Pulsified333
    • one year ago
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    #10 2x+2=72 @sbuck98

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