math

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1. Find the LCD of 3/5 and 1/6.

a. 5
b. 6
c. 11
d. 30

2 Add the fractions and write your answer in lowest terms.

2/5 + 1/9

a. 1/15
b. 23/45
c. 3/14
d. 19/45

3. Subtract the fractions and write your answer in lowest terms.

4/5 - 3/8

a. 1/40
b. 1 7/40
c. 7/10
d. 17/40

4. If Sandy's cookie recipe calls for 1/3 cup of brown sugar and she increases it by 2/9 of a cup, how much brown sugar does she have?

a. 7/9 cup
b. 5/9 cup
c. 4/9 cup
d. 1/9 cup

5. Subtract the fractions and write your answer in lowest terms.

5/8 - 1/6

a. 30/48
b. 19/24
c. 6/8
d. 6/6

Please help me I can't figure this out. :(

  • math -

    I'll show you the first two.

    1. Find the LCD of 3/5 and 1/6.

    a. 5
    b. 6
    c. 11
    d. 30

    The LCD is the smallest number divisible by both denominators.
    Let's look at the multiples of 6:
    6, 12, 18, 24, 30. The only one of those numbers that's also divisible by 5 is 30.


    2 Add the fractions and write your answer in lowest terms.

    2/5 + 1/9

    a. 1/15
    b. 23/45
    c. 3/14
    d. 19/45

    The least common denominator must be 45.
    2/5 = 18/45
    1/9 = 5/45

    Add the numerators to find your answer.

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

  • math -

    here they are
    3. a
    4. b
    5. c

    if they r wrong plz tell me the right ones

  • math -

    help any body

  • math -

    3 is wrong.
    4 is right.

    I don't think the correct answer is one of your choices for 5.

    My answer for 5 is 11/24.

    Please make sure you've copied the problem correctly.

  • math -

    3. 4/5 - 3/8
    the LCD is 40, but you can't just subtract the numerators. "fifths" and "eighths" aren't the came kind of things. In order to make them both into "fortieths" you have to make the denominators equal to 40.

    The key to this kind of pronblem is to remember that multiplying by 1 does not change anything. to make 5 into 40, you need to multiply by 8. But to avoid changing the value, you multiply by 8/8 which is just 1.

    4/5 * 8/8 = 32/40
    3/8 * 5/5 = 15/40

    Now everything is expressed in "fortieths", so you can now just subtract. 32-15 = 17, so

    4/5 - 3/8 = 32/40 - 15/40 = 17/40
    -------------------------
    4. 1/3 + 2/9

    1/3 * 3/3 = 3/9

    3/9 + 2/9 = 5/9
    5. 5/8 - 1/6

    5/8 * 3/3 = 15/24
    1/6 * 4/4 = 4/24

    15/24 - 4/24 = 11/24
    Hmmm. Not given
    However, 5/8 + 1/6 = 19/24. Typo?

  • math -

    The correct answers are
    1.d 30
    2.c 5/14
    3.b. 5/9
    4.d 8/15
    5. a 1 1/2, 1 1/9

  • math -

    5sosfan is wrong you made my grade to an F so that means F U

  • math -

    Actually he's right

  • math -

    5sosfan is right :)

  • math -

    D
    C
    B
    D
    A

    So 5sosfan is correct!

  • math -

    INCORRECT IF YOU GO TO CONNEXUS IT IS ENTIRELY WRONG
    D
    B
    D
    B
    B

  • math -

    5sosfan is correct

  • math -

    5sosfan is tottallly correct thanks

  • math -

    Lincoln Im in connexus

  • math -

    yall suck. im failing now

  • math -

    LINCOLN B IS RIGHT THE ANSWERS ARE

    D
    B
    D
    B
    B

  • math -

    LICOLN B IS WRONG, 5SOSFAN IS RIGHT, BELEIVE ME I GOT 100%.

  • math -

    LICOLN B IS WRONG, 5SOSFAN IS RIGHT, BELEIVE ME I GOT 100%. For ohio connections, its 100% correct believe me.

  • math -

    Soo lion b is correct I got 100%
    I'm letting you guys kno not to listen to the other guy I'm telling the truth unless you want to get an F

  • math -

    I HATE people who don't tell the truth

  • math -

    the answers are D,C,B,D,A since some people wanna be anusses and make me get a fing 20%

  • math -

    5sosfan
    you're a douche >:/

  • math -

    Lincoln b Is wrong and the other dude is right If I=you go to Texas Connections then don't trust Lincoln B. The reason why I say this is because I got an F 1/5 so I suggest to go to 5sosfan

  • math -

    i agree. if you go to tcah, 5sosfan is right and i got a 100%

  • math -

    I go to Connections! WHAT DO I DO!?!?!

  • math -

    If u go to connections academy, 5sosfan has the right answers too.

  • math -

    1.D
    2.C
    3.B
    4.D
    5.A
    I took the quiz and got 100%

  • math -

    @5sosfan is 100% right I swear to GOD!

  • math -

    guys, dont get tricked by those dumbos who listen to stupid Ms.Sue WHO COULD BE ANYONE!!! 5sosfan is correct!!! ^_^

  • math -

    Lincoln is right is you go to Michigan connections academy and @5sosfan is right if you go to Ohio connections academy.

  • math -

    Connexus Academy is 100% right. Just took the test 1 second ago.

  • math -

    5sosfan is correct just took the test

  • math -

    Lesson 3 unit 3
    5sosfan is correct... trust me i had those answers and got a 100%

  • math -

    THESE ARE CORRECT!!!
    1- D
    2- B
    3- D
    4- B
    5- B

  • math -

    I did
    1- A
    2- B
    3- D
    4- B
    5- B

    and I got 80% because 1= D not A


    :3

  • math -

    Lincoln B is incorrect the answers are and these are correct got a 100%
    1.D/30
    2.C/5/14
    3.B/5/9 cup
    4.D/8/15
    5.A/1-2/9 , 1-1/9
    This is only for connections students

  • math -

    Thanks Lincoln

  • math -

    Everyone who getting F's you must know that they switch questions up so for me sosfam whatever his name is was correct (for me)

    Tip tho look at the answers not the letters
    Gl and have a nice day mwah

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