Question

Use cross products to determine which of the following pairs of ratios cannot form a proportion.
A. 1/3*3/9
B. 2/3*4/9
C. 2/3*4/6
D. 1/3*2/6
Is the answer B?

Answer 1

Yes B.

1/3 * 3/9 = 1*9 and 3*3 = 9 and 9
2/3 * 4/9 = 2*9 and 3*4 = 18 and 12
2/3 * 4/6 = 2*6 and 3*4 = 12 and 12
1/3 * 2/6 = 1*6 and 3*2 = 6 and 6

So B is the correct answer.

I hope this helps! :)

Answer 2

Thank you

Answer 3

You're welcome, Callie.