99 points the ada requires wheelchair ramps to have a horizontal distance of 3 feet for every 1 foot drops suppose a new building has a 16.5 foot drop what is the horizontal distance that the ramp must cover to remain in code

The horizontal distance is 49.5 feet

Step-by-step explanation:

The ratio is a horizontal distance of 3 feet for every 1 foot drops.

So for a 16.5 foot drop. the horizontal distance = 16.5 *3 = 49.5 feet

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.