The height should be 8 inches.
It's asking you what percent of 500 is 430, and you can answer that by first dividing 500 by 100 to find 1%, which is 5, and then dividing 430 by 5, which is 86%, which is your answer. To fill in your sheet, you put the 430 in the left box and the 500 on the right. I hope this helps!
Answer:
On May 1st, the temperatures at midnight in five European cities were measured and the results were as follows.
Glasgow 2°C, Nice 6°C, Berlin 0°C, London 4°C,
Oslo -3°C List the cities in order of the temperature at midnight, starting with the lowest.
Given:
8.90ft³ for 30 balloons
Let h be the volume of helium and b be the number of balloons.
Using proportion;
b/h = 30 /8.90
Multiply both-side by h


Hence, the answer to blank 1 is the above.
when b=50, substitute for b in the above and solve for the volume (h).
That is;

Multiply both-side by 8.90/30


Hence, the answer to blank 2 is 14.83ft³.
Answer:
what? if u mean by rounding, its 103