you ride your bike X miles per hour up a mountain for 45 minutes on the way down the mountain you ride your bike for 7 miles per hour fasterit takes 20 minutes to ride your bike down the mountain how far did you ride your bike in total

none of these

step-by-step explanation:

23 + 34 add up to 57 so just inform the teacher of this really stupid mistake

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.