7th grade math Ms.Sue please!
posted by Delilah .
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

Yay! All are right!

Thanks! You're really truly the best!

You're very welcome!
But YOU did these problems! :) 
Ms.Sue ur very nice

1. ≠
2. =
3. 1.8
4. x = 8
5. 3/48 = x/72, x = 4.5 cups
100% 
I hereby dub thee CORRECT!

Thank you! 5/5 100% thank you CORRECTINATOR and Shawn Mendes Is Bae are correct! GREAT JOB Delilah! :D

They are right!!! I got a 100%!

Yay! Thanks guys :)!

Thank you, all of you! 5/5, 100%!!!

Wait I got different ones from three down

Correct!!!!!!!!!!!!!!!!!!!!!!!!!!!!tHNX
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