MATH
posted by deborah .
Use cross products to see if each pair of ratios forms a proportion. Replace each box with = or ≠.
1.
sevenfifths and fifteentenths (
=
≠
2.
sixeighths and fifteentwentieths
=
≠
Solve each problem.
3.
twothirds equals twelve over x
x = 18
x = 12
x = 36
x = 8
4.
sixelevenths equals eightyfour over x
x = 40
x = 120
x = 254
x = 154
5.
twentytwo miles over fiftyfive hours equals twelve miles over h hours
48
30
45
22

1. ≠
I'll be glad to check your answers for the other problems. 
sixeighths and fifteentwentieths

1. is unequal to
2. is equal to
3. 36
4.IDK yet
5.IDK yet