I just know that 2 is X = 6
Answer: D
Step-by-step explanation: sub to my yt clizey
We know that the balloon ascends at the same constant rate, that means that after the penny drop is:

this comes from the fact that the initial height is 500 ft and that for each second the balloon ascends 10 feet.
Let x be the total number of questions. We know that Jess answered correctly 35 of them, and those 35 are the 74.47% of all questions.
So, can build the proportion linking the correct answers to the total number of questions:

Solving for x, we have

Answer:
9.2
Step-by-step explanation:
c² = a² + b² = 6² + 7² = 85
c = √85 ≈ 9.2