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janice1989

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

  • 7 months ago
  • 7 months ago

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

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

    • 7 months ago
  3. janice1989
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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!

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

    • 7 months ago
  5. hartnn
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    you just post the question you have difficulty with.

    • 7 months ago
  6. janice1989
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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 months ago
  7. hartnn
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    my name is hartnn, janice :) you can call me that

    • 7 months ago
  8. janice1989
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    Okay!

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

    • 7 months ago
  10. janice1989
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    Oh i forgot answers

    • 7 months ago
  11. janice1989
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    3,-10 3,10 6,-10 6,10 My son said B

    • 7 months ago
  12. hartnn
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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 ... ?

    • 7 months ago
  13. janice1989
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    -10 he said

    • 7 months ago
  14. hartnn
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    and he is correct! :)

    • 7 months ago
  15. janice1989
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    So the answer would be A than correct?

    • 7 months ago
  16. hartnn
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    yes, A would be correct.

    • 7 months ago
  17. janice1989
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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 !

    • 7 months ago
  18. hartnn
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    i don't mind, at all :)

    • 7 months ago
  19. joemagee
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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.

    • 7 months ago
  20. janice1989
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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?

    • 7 months ago
  21. Preetha
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    Good work Hartnn!

    • 7 months ago
  22. janice1989
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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!

    • 7 months ago
  23. hartnn
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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 ?

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

    • 7 months ago
  25. janice1989
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    so instead he said would it be A than?

    • 7 months ago
  26. hartnn
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    A is correct :)

    • 7 months ago
  27. janice1989
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    Woohoo you are amazing!!!

    • 7 months ago
  28. janice1989
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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

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

    • 7 months ago
  30. hartnn
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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,....

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

    • 7 months ago
  32. janice1989
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    so would it be A & C

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

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

    • 7 months ago
  35. hartnn
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    tell him he is absolutely correct :)

    • 7 months ago
  36. janice1989
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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!

    • 7 months ago
  37. hartnn
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    now you know :)

    • 7 months ago
  38. janice1989
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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?

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

    • 7 months ago
  40. hartnn
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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

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

    • 7 months ago
  42. hartnn
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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 ?

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

    • 7 months ago
  44. janice1989
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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?

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

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

    • 7 months ago
  47. hartnn
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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 ?

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

    • 7 months ago
  49. hartnn
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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 ?

    • 7 months ago
  50. hartnn
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    note x means x^1 , both mean the same

    • 7 months ago
  51. janice1989
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    he said he is confused. he said he dont get that,

    • 7 months ago
  52. hartnn
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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?

    • 7 months ago
  53. janice1989
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    got it he said

    • 7 months ago
  54. hartnn
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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 = ... ?

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

    • 7 months ago
  56. hartnn
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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

    • 7 months ago
  57. janice1989
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    ok he got this,

    • 7 months ago
  58. janice1989
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    he understands whats next step?

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

    • 7 months ago
  60. janice1989
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    ok got it

    • 7 months ago
  61. janice1989
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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???

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

    • 7 months ago
  63. janice1989
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    ok he said he got it so far

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

    • 7 months ago
  65. janice1989
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    7 2x + 7-2

    • 7 months ago
  66. hartnn
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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

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

    • 7 months ago
  68. janice1989
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    14 &-28correct he said?

    • 7 months ago
  69. hartnn
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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)

    • 7 months ago
  70. janice1989
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    2*(3x) + 2(1)

    • 7 months ago
  71. hartnn
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    good! and whats 2*3x = ... ?

    • 7 months ago
  72. janice1989
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    6 dalton said

    • 7 months ago
  73. hartnn
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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.

    • 7 months ago
  74. janice1989
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    2x, 3x?? and 14x and 6x?

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

    • 7 months ago
  76. janice1989
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    yes. 20x

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

    • 7 months ago
  78. janice1989
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    -30

    • 7 months ago
  79. hartnn
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    -28+2 is not -30

    • 7 months ago
  80. janice1989
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    -26 that look like a - instead of a +

    • 7 months ago
  81. hartnn
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    -28+2 = - (28-2) = - (26) yes.

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

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

    • 7 months ago
  84. janice1989
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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??

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

    • 7 months ago
  86. janice1989
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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?

    • 7 months ago
  87. hartnn
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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! :) :)

    • 7 months ago
  88. janice1989
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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

    • 7 months ago
  89. hartnn
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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 :)

    • 7 months ago
  90. Preetha
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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.

    • 7 months ago
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