The mean length of 4 childrens' big finger is 6cm. The mean length of 11 adults' big finger is 11.1cm.
What is the mean length (rounded to 2 DP) of these 15 people's big finger?

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

On traditional maps, earth is represented in a flat plane, or by euclidean geometry. however, a globe is a more accurate model that comes from elliptical geometry.how does a globe represent the fact that there are no parallel lines in elliptical geometry? the equator is not parallel to any other latitudinal lines. the north and south poles are never connected by a geodesic. the geodesics connecting the north and south poles never intersect. the geodesics connecting the north and south poles intersect at both of the poles.

Find the distance between the pair of points a(-1,8) and b(-8,4)