Tony and tiffany collect semi-precious stones. at the rockhound hut, tiffany paid $38 for 9 pounds of
snowflake obsidian. at the solid rock shop, tony paid $19 for 3 pounds of the same type of stone. who
made the better buy?

what

step-by-step explanation:

consider the parallelogram shown in the attached image.

in the parallelogram hijk, the length of hk is given as,

from the properties of parallelogram we know that the opposite sides of a parallelogram are parallel to each other and are equal in measure.

therefore, the length of the side ij must be equal to the length of the side hk and that is .

hence, the expression for the length of ij confirms that hijk is a parallelogram.