Have no idea how to answer this, please help :(

Asoccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.1 in

Plz.yesterday, the snow was 2 feet deep in front of archie’s house. today, the snow depth dropped to 1.6 feet because the day is so warm. what is the percent change in the depth of the snow?

Which ratios are equivalent to 10: 16? check all that apply. 30 to 48 25: 35 8: 32 5 to 15