Sophie bikes at a speed of s miles per hour. Her friend Rana is slower, her biking speed is only r miles per hour. The route Sophie traveled took her t hour. How long was the route.

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.

it should be a and d. lmk if i'm wrong xd