CHALLENGE: In a gymnastics competition the overall score is calculated from points for execution and difficulty, calculated with weights of 80% and 20% respectively. Grace scored 9.8 for execution and had an overall score of 9.5. What was her score for difficulty?

step-by-step explanation:

i have no clue what you just said. write a question in english?

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.