Posted by Delilah on Friday, October 26, 2012 at 8:41pm.
Use cross products to see if each pair of ratios forms a proportion. Replace each box with = or ≠.
1.
7/5 ? 15/10
=
≠
2.
6/8 ? 15/20
=
≠
Solve each problem.
3.
2/3 = 1.2/x
x = 18
x = 1.8
x = 0.2
x = 10
4.
4/5 equals 8/x plus 2
x = 4
x = 9.5
x = 2
x = 8
Create a proportion and solve.
5.
A recipe uses 3 cups of flour to make 48 cookies. How much flour is needed to make 72 cookies? (1 point)
3/48 = 72/x, x = 1,152 cups
3/48 = x/72, x = 4.5 cups
3/48 = x/72, x = 2 cups
x/48 = 3/72, x = 2 cups
Here are my answers. Are they correct? Thanks!
1. ≠
2. =
3. 1.8
4. x = 8
5. 3/48 = x/72, x = 4.5 cups

7th grade math Ms.Sue please!  Ms. Sue, Friday, October 26, 2012 at 8:50pm
Yay! All are right!

7th grade math Ms.Sue please!  Delilah, Friday, October 26, 2012 at 8:51pm
Thanks! You're really truly the best!

7th grade math Ms.Sue please!  Ms. Sue, Friday, October 26, 2012 at 8:52pm
You're very welcome!
But YOU did these problems! :)

7th grade math Ms.Sue please!  Iliza, Wednesday, November 28, 2012 at 6:00pm
Ms.Sue ur very nice

7th grade math Ms.Sue please!  Shawn Mendes is bae, Monday, November 2, 2015 at 9:33am
1. ≠
2. =
3. 1.8
4. x = 8
5. 3/48 = x/72, x = 4.5 cups
100%

7th grade math Ms.Sue please!  CorrectInator, Thursday, December 3, 2015 at 4:06pm
I hereby dub thee CORRECT!

7th grade math Ms.Sue please!  Mariana W., Wednesday, January 13, 2016 at 10:34am
Thank you! 5/5 100% thank you CORRECTINATOR and Shawn Mendes Is Bae are correct! GREAT JOB Delilah! :D

7th grade math Ms.Sue please!  Salted Caramel, Wednesday, January 13, 2016 at 1:01pm
They are right!!! I got a 100%!

7th grade math Ms.Sue please!  Bapper, Wednesday, January 13, 2016 at 9:33pm
Yay! Thanks guys :)!

7th grade math Ms.Sue please!  Cuddlefish <3, Tuesday, January 19, 2016 at 10:51am
Thank you, all of you! 5/5, 100%!!!

7th grade math Ms.Sue please!  Ethan's bae and I have no friends, Monday, October 24, 2016 at 7:38pm
Wait I got different ones from three down

7th grade math Ms.Sue please!  Anne Onimus, Sunday, November 27, 2016 at 1:51pm
Correct!!!!!!!!!!!!!!!!!!!!!!!!!!!!tHNX
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