Bob is a steady but absentminded paddler. He begins his canoe trip canoeing upstream. After 1.5 miles, his hat falls into the river and begins floating down stream, but Bob doesn't even notice. Twenty minutes later he reaches his destination and turns around, continuing his same steady paddling in the downstream direction. He reaches his starting point at the same time his hat does, grabs his hat, and pulls his canoe out of the water. How fast is the river flowing?

Step-by-step explanation:

We are expected to solve for Bob's speed

Given data

distance covered = 1.5 mile

time taken = 20 minutes to hours = 0.33hours

We know that the expression for speed is given by

speed= distance covered/time taken

substituting our given values we have

speed= 1.5/0.33

speed=4.5 mph

So Bob's speed is 4.5 miles per hour

there would be 365 different 4 digit numbers

step-by-step explanation:

i belive that it is 365 because i asked google

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584