Brain liest for you7. On a hike, Peter walked 28 km in 7 h. a) What was his average rate of walking?
b) Suppose that he walked the 28 km in
8 h. What would his average rate of
walking be? do only b

a) 4km an hour

b) 3.5km an hour

Step-by-step explanation (only for b):

The answer is 3.5 kilometers because if he walked 28 kilometers in 8 hours, that means he walked an average of 28/8 km in 8/8 hours, or 3.5 kilometers in 1 hour.

-18

step-by-step explanation:

because mean value defines that total sum value over total number of set

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.