Answer:
the answer I believe is c
Step-by-step explanation:
In this question, the trail is 2940 miles long and Manfred is already hiking the 3/7 of the trail. You are asked how many miles he has a hike. Then to find it you just need to multiply the trail length with the ratio of hike/total trail. The calculation would be:
2940 miles * 3/7 = 1260 miles
It would be: 39/40 * 100 = 3900/40 = 97.5%
I think in (a) it will be 12*7 = 84 cm^2
In (b) it will be 42:6= 7 so 7*6=42 cm
In (c) it will be 42,9:7,8= 5,5 so 7,8*55 = 42,9
