witch pair of ratios form a proportion
a= 4/15 and 16/65
b= 45/75 and 5/8
c= 63/36 and 7/4
d= 14/72 and 2/9
cross-multiply
4/15 ≠ 16/65 because 4*65 ≠ 15*16
now try the rest
Which ratios are equivalent to 30/80 ? (select all that apply)
A) 9/24
B) 8/3
C) 25/85
D) 180/480
E) 18/48
To determine which pair of ratios form a proportion, we need to check if the ratios are equal. We can do this by simplifying each ratio and comparing them.
a) Ratio: 4/15 simplifies to 8/30, and 16/65 simplifies to 8/32. These ratios are not equal, so they do not form a proportion.
b) Ratio: 45/75 simplifies to 3/5, and 5/8 cannot be simplified further. These ratios are not equal, so they do not form a proportion.
c) Ratio: 63/36 simplifies to 7/4, and 7/4 cannot be simplified further. The other ratio, 7/4, is already in its simplest form. These ratios are equal, so they form a proportion.
d) Ratio: 14/72 simplifies to 7/36, and 2/9 cannot be simplified further. These ratios are not equal, so they do not form a proportion.
Therefore, the pair of ratios that form a proportion is c = 63/36 and 7/4.