Armando and Bianca are 290 feet apart when they start walking toward one another. Bianca walks twice as fast as Armando so whenever Armando travels x feet, Bianca travels 2x feet. Let (x) represent the number of feet Armando has
traveled since he started walking toward Bianca.

1.) Let (d) represent the distance (in feet) between Armando and Bianca. Write a formula that expresses (d) in terms of (x).

9514 1404 393

  d = 290 -3x

Step-by-step explanation:

For each x feet that Armondo travels toward Bianca, Bianca travels 2x feet toward Armondo. The net effect is that the distance between them decreases by x+2x = 3x feet. The distance starts at 290 feet when x=0, so the distance can be described by ...

  d = 290 -3x

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it