what are used to describe relationships between miles and gallons?
A. Rates
B. Ratios
C. Unit Rates
D. Proportions

Question

what are used to describe relationships between miles and gallons?
A.		 Rates
B.		 Ratios
C.		 Unit Rates
D.		 Proportions

anonymous · Answer

help me

anonymous · Answer

Ratios have no units (i.e. if there are units involved, they cancel out).

anonymous · Answer

so its between a and d

anonymous · Answer

If you made a fraction miles/gallons, there are no common units to cancel, so they are not a ratio.
A unit rate is dividing a number of units by a unitless number, e.g. 12 dollars for 3 = 12/3 dollars each = 4 dollars per unit.

anonymous · Answer

A proportion only exists when you set one fraction equal to another.
There is no equals sign involved here, so I think that eliminates all but one choice.

anonymous · Answer

I'm guessing it's D

anonymous · Answer

thank you both of you ! life savers!

anonymous · Answer

Welcome

anonymous · Answer

(here's another hint (redundant alongside my previous one): the answer is not D)