Bob climbed down a ladder from his roof, while roy climbed up another ladder next to him. each ladder had 30 rungs(steps). their friend jill recorded the following information about bob and roy: bob went down 2 rungs every second. roy went up 1 rung every second. at some point, bob and roy were at the same height. which rung were they on?

They were on 10th rung.

Step-by-step explanation:

Given,

The total rung( steps ) in the ladder = 30,

∵ Speed of Bob to coming down = 2 rung per second,

So, the height of bob after x seconds = 30 - 2x

Now, speed of Roy to climb the ladder = 1 rung per sec,

So, the height of Roy after x seconds = 1 × x = x

If x = 30 - 2x

x + 2x = 30

3x = 30

Hence, they were be at 10th rung.

y=3n + 1

step-by-step explanation:

this is wrong because it says the second number is one less and i added one instead

correct answer is option b.

step-by-step explanation:

the true statement about geometric figure is option b that is one line can be drawn through all three points.

if three points are on the same plane, they can be connected by a line.