Take a walk. the centers for disease control monitors the physical activity level of americans. a recent survey on a random sample of 23,129 americans yielded a 95% confidence interval of 61.1% to 62.9% for the proportion of americans who walk for at least 10 minutes per day.

answer: the distance

step-by-step explanation:

to calculate the distance d of a line segment with endpoints (x1, y1) and (x2, y2) use the formula d (x2 x1)2 (y2 y1)2. to calculate the midpoint of a line segment with endpoints (x1, y1) and (x2, y2) use the formula

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

pls mark as brainliest.

i'm assuming that it's c.)   volcanoes built the mountains and earthquakes tore them down.