7th grade math help asap please

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1.
-1/9 + (-5/7) = ?

2.
11/12 + (-2/3) = ?

3.
What is the difference between an irrational number and an integer?

21.
A length of ribbon is three and one-half yd long. How many pieces one and five-ninths yd long can Joy cut from the length of ribbon? (1 point)

1
2
3
4


How do you solve these problems?

  • 7th grade math help asap please -

    I'll do the first one.

    -1/9 + (-5/7) =

    First, find the common denominator.

    1/9 = 7/63
    5/7 = 45/63

    -7/63 + (-45/63) = -52/63

    I'll be glad to check your answers for the other problems.

  • 7th grade math help asap please -

    Thanks! but i still don't understand how you got 7/63 in the first step. So is there any way you could show me how to do the second one step-by-step?

  • 7th grade math help asap please -

    1/9 = 7/63

    I multiplied both the numerator and denominator by 7.

    Study this site for how to find the least common denominator.

    http://www.mathsisfun.com/least-common-denominator.html

  • 7th grade math help asap please -

    Thanks! I still can't figure out what is the difference between a irrational number and an integer... do you know help please

  • 7th grade math help asap please -

    Study these sites.

    http://www.mathsisfun.com/definitions/irrational-number.html

    http://www.mathsisfun.com/definitions/integer.html

  • 7th grade math help asap please -

    thanks so much! Those sites really helped! Can you help me solve this problem:

    A length of ribbon is 3 1/2 yd long. How many pieces 1 5/9 yd long can Joy cut from the length of ribbon? (1 point)

    1
    2
    3
    4

  • 7th grade math help asap please -

    The easiest way is to change these to improper fractions.

    3 1/2 = 7/2
    1 5/9 = 14/9

    (7/2) / (14/9) =

    (7/2) * (9/14) = 63/28 = 2.25

    She can cut two pieces of ribbon from this length.

  • 7th grade math help asap please -

    Thanks sooo much I understand it now!!!!

  • 7th grade math help asap please -

    Yay!

    And you're welcome.

  • 7th grade math help asap please -

    THERE ARE 35 STUDENTS IN A CLASS WHO STUDY EITHER ART OR MUSIC, 15 STUDY ART. tWICE AS MANY STUDENTS WHO STUDY ART STUDY MUSIC. hOW MANY STUDY BOTH ART AND MUSIC.

  • 7th grade math help asap please -

    /\ what he said /\

  • 7th grade math help asap please -

    HE SAID YO MOMAAAAAA :OOOOOOOOOOOOOOOOO OHHHHHHH U LOOOOK LIKE A MFKINHOEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE OHHHHHHHHHHHHHHHHHH :OOOOOO

  • 7th grade math help asap please -

    XD

  • 7th grade math help asap please -

    All the multiple choice answers starting at 3 for GACA

    3 c
    4 c
    5 b
    6 a
    7 b
    8 c
    9 b
    10 b
    11 c
    12 d
    13 d
    14 b
    15 d
    16 c
    17 c
    18 b
    19 a
    20 c
    21 a
    22 d
    23 b
    24 a

    Hope this helps for the lazy workers like me :3

  • 7th grade math help asap please -

    ^ Armon and Trey is 100% correct for GACA BTW love your YT channel I subscribed

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