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janice1989

  • one year ago

Hello, I am trying to help my son with his algebra! but i am just having hardest time! can someone please help me?

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  1. hartnn
    • one year ago
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    Hi @janice1989 \[ \begin{array}l\color{red}{\text{W}}\color{orange}{\text{E}}\color{#e6e600}{\text{L}}\color{green}{\text{C}}\color{blue}{\text{O}}\color{purple}{\text{M}}\color{purple}{\text{E}}\color{red}{\text{ }}\color{orange}{\text{t}}\color{#e6e600}{\text{o}}\color{green}{\text{ }}\color{blue}{\text{O}}\color{purple}{\text{P}}\color{purple}{\text{E}}\color{red}{\text{N}}\color{orange}{\text{S}}\color{#e6e600}{\text{T}}\color{green}{\text{U}}\color{blue}{\text{D}}\color{purple}{\text{Y}}\color{purple}{\text{ }}\color{red}{\text{:}}\color{orange}{\text{)}}\color{#e6e600}{\text{}}\end{array} \]

  2. hartnn
    • one year ago
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    how can we help you ? do you have any specific qustion ?

  3. janice1989
    • one year ago
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    Yes can you give me a min? I am not sure how to really work this nad help my son, he has special needs! so he has hard time understanding it and im just stuck! and the teachers dont help at all! im just os stressed out!

  4. hartnn
    • one year ago
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    don't worry, i will try my best to help you :)

  5. hartnn
    • one year ago
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    you just post the question you have difficulty with.

  6. janice1989
    • one year ago
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    Okay, Sorry it took so long to reply he got one asnwer right hold on whille i type the ones we need help with! What is your name?

  7. hartnn
    • one year ago
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    my name is hartnn, janice :) you can call me that

  8. janice1989
    • one year ago
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    Okay!

  9. janice1989
    • one year ago
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    The expression 5x^2+x-10 has ___ terms and a constand of ____

  10. janice1989
    • one year ago
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    Oh i forgot answers

  11. janice1989
    • one year ago
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    3,-10 3,10 6,-10 6,10 My son said B

  12. hartnn
    • one year ago
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    3 terms are correct! 5x^2 -> one term +x ->2nd term -10 -> 3rd term but the constant is the term with no ''x" in it, which is ... ?

  13. janice1989
    • one year ago
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    -10 he said

  14. hartnn
    • one year ago
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    and he is correct! :)

  15. janice1989
    • one year ago
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    So the answer would be A than correct?

  16. hartnn
    • one year ago
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    yes, A would be correct.

  17. janice1989
    • one year ago
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    He is smiling ear to ear he got it right! you can explain it a lot better than i could, there is some more if you dont mind helping with !

  18. hartnn
    • one year ago
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    i don't mind, at all :)

  19. joemagee
    • one year ago
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    Janice, thanks for using OpenStudy. Do tell other parents about us. Hartnn is one of our senior, most skilled and patient OpenStudiers! There are many like him on the site to help. They do it because they love Math and helping young learners.

  20. janice1989
    • one year ago
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    the expression 9x^2-5x-7 has __ terms and a constant of ___ 3,-7 5,-7 3,7 -5,7 He said there is 5 terms and a constant of -7 since its right after the x. so he said it would be B correct?

  21. Preetha
    • one year ago
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    Good work Hartnn!

  22. janice1989
    • one year ago
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    I will for sure tell other parents about it! Ive been stuck on this for such a long time, And someone told me about it, this is an amazing website, Do you also do Geometry?? My daughter is doing geometry and also has special needs she has Aspergers and is having such a hard time with it.. and she is just stressed and all!

  23. hartnn
    • one year ago
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    thank you for the appreciations, yes, i do geometry too :) lets count the terms in , 9x^2-5x-7 9x^2 -5x -7 how many ?

  24. janice1989
    • one year ago
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    Than after we finish this up maybe later on you could help my daughter? And he said 3 :)

  25. janice1989
    • one year ago
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    so instead he said would it be A than?

  26. hartnn
    • one year ago
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    A is correct :)

  27. janice1989
    • one year ago
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    Woohoo you are amazing!!!

  28. janice1989
    • one year ago
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    In 6x^4-3y+5x^4-10 what are the like terms in the expression choose all that apply.. 6x^4 -3y 5x^4 -10 he said all of them

  29. hartnn
    • one year ago
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    you will find many amazing users here on OpenStudy, willing to help you as much as i am :)

  30. hartnn
    • one year ago
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    like terms are those which have same exponent of 'x' like x^3, -3x^3, 8x^3 .... (one set of like terms) x,4x,9x,-x,.... and constants like 4,8,0,-1,....

  31. hartnn
    • one year ago
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    in 6x^4-3y+5x^4-10 which terms have same exponent of x ?

  32. janice1989
    • one year ago
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    so would it be A & C

  33. hartnn
    • one year ago
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    does your boy say/agree with A and C too ?

  34. janice1989
    • one year ago
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    Yeah he said that, i am just typing for him because he is little bit slow on typing! :D

  35. hartnn
    • one year ago
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    tell him he is absolutely correct :)

  36. janice1989
    • one year ago
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    Okay :D hold on he is working on next one to see if he can get it, who would have known a stranger online could help so much more than a teacher!

  37. hartnn
    • one year ago
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    now you know :)

  38. janice1989
    • one year ago
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    Simplify : 7x^2+2x^2 7x^2 9x^2 14x^4 9x^4 He said he is not sure what to do can you explain it step by step? He said it would either be A or B since the top number are both 2. or do you add them together?

  39. janice1989
    • one year ago
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    He said would it be B? since 7+2 = 9??

  40. hartnn
    • one year ago
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    the top number (here 2) is called the exponent. does he know what an exponent is ? and yes, B is correct, because 7x^2+2x^2 = (7+2)x^2 = 9x^2

  41. janice1989
    • one year ago
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    He said hes heard of it, but isnt really sure what it is.

  42. hartnn
    • one year ago
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    i'll explain, x^n, x is called the 'base' and n is called the exponent. x^n implies , multiplying 'x' to itself, 'n' times. we take an example : 2^4 will imply multiplying 2 4 times = 2*2*2*2 = 16 similarly, x^2 will imply multiplying x with itself twice, x*x got this ?

  43. janice1989
    • one year ago
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    he said oh that is what exponent is i know now! lol. Thank you, hes working on the next one :)

  44. janice1989
    • one year ago
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    Subtract the second expression from the first (5x^2-3x+5)-(3x^2-4x-7) 2x^2+x+12 2x^2-7x+12 8x^2+x+12 2x^2+x-2 He said would it be B?

  45. hartnn
    • one year ago
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    why B , how did he get co-efficients like 2,-7 and 12 ?

  46. janice1989
    • one year ago
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    He says he dont know, i think he was guessing. He does that a lot. Im sorry!

  47. hartnn
    • one year ago
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    (5x^2-3x+5)-(3x^2-4x-7) = 5x^2 -3x +5 -3x^2 - (-4x) - (-7) {by distributing the negative} = 5x^2 -3x +5 -3x^2 +4x +7 {because negative times negative becomes positive!} then we identify like terms. but is this much clear ?

  48. janice1989
    • one year ago
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    he said for like terms would it be 5x^2 -3x -3x^2 and 4x?

  49. hartnn
    • one year ago
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    for like terms , the exponent of x should be same, for which terms exponent of x is 2 ? for which terms exponent of x is 1 ?

  50. hartnn
    • one year ago
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    note x means x^1 , both mean the same

  51. janice1989
    • one year ago
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    he said he is confused. he said he dont get that,

  52. hartnn
    • one year ago
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    ok, the 5x^2 and -3x^2 has exponent of 2 so these are like terms and we can combine them in this way, 5x^2-3x^2 = (5-3)x^2 = 2x^2 got this?

  53. janice1989
    • one year ago
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    got it he said

  54. hartnn
    • one year ago
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    cool, from this : 5x^2 -3x +5 -3x^2 +4x +7 the other like terms are -3x and +4x (because they both contains just x with it, not x^2 or x^3 .....) so we can combine them like : -3x+4x = (-3+4) x = ... ?

  55. janice1989
    • one year ago
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    he said uh he thinks you can combine them not 100% sure

  56. hartnn
    • one year ago
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    yes, they can be combined because they both have same exponent (=1 here) so, -3x+4x = (-3+4) x = -x lastly, what remains are just constants, 7+5 , which =12

  57. janice1989
    • one year ago
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    ok he got this,

  58. janice1989
    • one year ago
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    he understands whats next step?

  59. hartnn
    • one year ago
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    so, finally, putting the results together, 2x^2-x+12

  60. janice1989
    • one year ago
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    ok got it

  61. janice1989
    • one year ago
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    distribute and simplify 7(2x-4)+2(3x+1) 20x+26 20x-26 14x-28 6x+2 He asked what is it to distribute???

  62. hartnn
    • one year ago
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    Distribution Property : a(b+c) = ab+ac |dw:1379629904908:dw| ask if you need an explanation in words....

  63. janice1989
    • one year ago
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    ok he said he got it so far

  64. hartnn
    • one year ago
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    |dw:1379630067115:dw| so can he fill that now ?

  65. janice1989
    • one year ago
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    7 2x + 7-2

  66. hartnn
    • one year ago
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    the operation is actually of multiplication while distributing, a(b+c) = a*b + a*c so, that will be = 7*(2x) + 7*(-4) got this ? and simplify this further

  67. hartnn
    • one year ago
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    like 7*(-4) = -28,

  68. janice1989
    • one year ago
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    14 &-28correct he said?

  69. hartnn
    • one year ago
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    yeah, just don't forget the 'x' too 7*2x = 14x 7*(-4)=-28 so, the first part 7(2x-4) = 14x-28 in same way, please try the second part, 2(3x+1)

  70. janice1989
    • one year ago
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    2*(3x) + 2(1)

  71. hartnn
    • one year ago
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    good! and whats 2*3x = ... ?

  72. janice1989
    • one year ago
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    6 dalton said

  73. hartnn
    • one year ago
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    2*3x = 6x (again, don't forget the 'x') so we have 7(2x-4) +2(3x+1) = 14x-28+6x+2 we have distributed successfully, now time to combine like terms, tell him to try first.

  74. janice1989
    • one year ago
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    2x, 3x?? and 14x and 6x?

  75. hartnn
    • one year ago
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    from this 14x-28+6x+2 there are only 2 terms containing 'x' , right ? so what is 14x+6x =....?

  76. janice1989
    • one year ago
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    yes. 20x

  77. hartnn
    • one year ago
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    the constants, -28+2 =... ? and so the final answer will be ?

  78. janice1989
    • one year ago
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    -30

  79. hartnn
    • one year ago
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    -28+2 is not -30

  80. janice1989
    • one year ago
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    -26 that look like a - instead of a +

  81. hartnn
    • one year ago
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    -28+2 = - (28-2) = - (26) yes.

  82. janice1989
    • one year ago
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    there is 2 more questions could you help out with?

  83. hartnn
    • one year ago
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    yes, go ahead with them, lets crack them together! :)

  84. janice1989
    • one year ago
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    evaluate the expression 2(x+y) ---------- for x=6 and y=7 3 13/3 19/3 20/3 26/3 he said its look like this 2(6+7) ------- 3 he said would the answer be 26/3??

  85. hartnn
    • one year ago
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    yes, he is correct! congratulate him on my behalf :)

  86. janice1989
    • one year ago
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    Evaluate the expression 3x+4y --------- x=1.5 and y=2.5 2 2 4.25 6.25 7.25 His work 3(1.5) +4(2.5) -------------- 2 would it be 7.25?

  87. hartnn
    • one year ago
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    lets check, 3(1.5) + 4(2.5) = 4.5+10 = 14.5 is the numerator. and 14.5/2 = 7.25 is the correct answer! :) :)

  88. janice1989
    • one year ago
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    Woohoo Thank you sooo soo much Hartnn!! :) You are amaizng! you did such a great job! :D You are beyond smart!! :D

  89. hartnn
    • one year ago
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    you are welcome janice :) even i am glad that i could help you. and i want to request your son to practice more problems. with good amount of practice, your son can be smarter than me :)

  90. Preetha
    • one year ago
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    Janice, glad Hartn could help your son. Do come back and help OpenStudy grow by spreading the word to other parents and friends. Thanks.

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