5 9th grade algebra equation problems? 10 points?

1. 2a-11 = -8a+19

2. 2c+6 = 1-3c

3. -y-22 = y-16

4. 5d-8 = 3+7d

5. 9+2.7t = -4.8t - 6

Thanks. Please show work.

8 Answers

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  • 9 years ago
    Favorite Answer

    1.) 2a+8a=19-11

    10a=8

    a=8/10=4/5

    2.)2c+3c=1-6

    5c=-5

    c=-1

    3.)-y-y=-16+22

    -2y=6

    y=-3

    4.) 5d-7d=3+8

    -2d=11

    d=-2/11

    5.) 2.7t+4.8t=-6-9

    7.5t=-15

    t= -15/7.5=2

  • Anonymous
    5 years ago

    The product of two square roots is equal to the square root of the product. So: √3 x √8 = √(8 x 3) = √24 But you can simplify √24. Rewrite it as √24 = √(4 x 6) = √4 x √6 And √4 is just 2, so √4 x √6 = 2√6 Answer: 2√6 (3 + √7)^2 = 3^2 + 2(3)(√7) + (√7)^2 = 9 + 6√7 + 7 = 16 + 6√7 Answer: 16 + 6√7 √3 (5√3 - 2√6) = √3(5√3) - √3(2√6) = 5√(3 x 3) - 2√(3 x 6) = 5√9 - 2√18 = 5√9 - 2√(9 x 2) = 5√9 - 2(√9)(√2) = 5(3) - 2(3)(√2) = 15 - 6√2 Answer: 15 - 6√2

  • 5 years ago

    This Site Might Help You.

    RE:

    5 9th grade algebra equation problems? 10 points?

    1. 2a-11 = -8a+19

    2. 2c+6 = 1-3c

    3. -y-22 = y-16

    4. 5d-8 = 3+7d

    5. 9+2.7t = -4.8t - 6

    Thanks. Please show work.

    Source(s): 5 9th grade algebra equation problems 10 points: https://tr.im/GedOU
  • 9 years ago

    1)

    2a-11=-8a+19

    +11. +11

    2a=-8a+30

    +8a +8a

    10a=30

    /30. /30

    a=3

    2) 2c+6 = 1-3c

    +3c

    5c+6=1

    -6

    5c=-5

    /5

    C=-1

    3. -y-22 = y-16

    +22

    -y=y+6

    -y

    -2y=6

    /-2

    Y=3

    4. 5d-8 = 3+7d

    +8

    5d=11+7d

    -7d

    -2d=11

    /-2

    D= 11/2

    5. 9+2.7t = -4.8t - 6

    +4.8t

    9+7.5t=-6

    -9

    7.5t=-15

    /7.5

    T=2

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  • 9 years ago

    do your freakin homework on your own, read the chapter, figure out how to solve the problems and do it.. you gain nothing from people on the internet doing it for you slacker. you cant get through life like this. dont be a failure and figure it out

  • Anonymous
    9 years ago

    These problems really aren't that hard. You should do them on your own. Learn to do the math.

  • 9 years ago

    Just go to myalgebrasolver.com or wolframalpha.com all you have to do is type in your equation and they can give you the answer... Hope this helps...

    Source(s): Student
  • Anonymous
    9 years ago

    That take to long by iphone to show work

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