you paddle 2 miles downstream in a canoe at a rate of r+3 miles per hour. You turn around and paddle 1 mile upstream at a rate of 0.75r miles per hour. You then return to your original starting point at a rate of r miles per hour. Write a model in simplified form for the total time (t in hours) of the trip.

replication and blocking

step-by-step explanation:

i dont know the answer but here's a picture of a dog

step-by-step explanation:

18 units²

step-by-step explanation:

first let's find altitude bd using the distance formula

d = √((y₂ - y₁)² + (x₂ - x₁)²)

bd = √((0 - -3)² + (0 - 3)²)

bd = √18

given the placement of points a and c, we can denote that point d bisects segment ac.

we will call ac the base.

using the distance formula

ac = √((0 - 6)² + (-6 - 0)²)

ac = √72

knowing our base and our height, we can plug these into our triangle area formula

area = (b * h)/2

area = (√18 * √72) / 2

area = (√1296) / 2

area = 36 / 2

area = 18 units²