1. Three people board the subway train at the first stop. Five people board the train at the second stop. Seven people board the train at the third stop. If this pattern
continues and no one gets off the train, how many people are on the subway train when
it reaches the seventh and final stop?

48 people.

Step-by-step explanation:

The sequence is  3 5 7 ...

The common difference is 2 so by the 7th stop 6 lots of people have boarded and the total is:

3 + 5 + 7 + 9 + 11 + 13 = 48 people.

=

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

it is not that hard all u have to do is plot the graph

step-by-step explanation: