A building contains 20 rooms in total. 9 of the rooms are on the ground floor.
7 of the rooms have white walls.
2 of the rooms that are on the ground floor also
have white walls.
Work out the probability that a room picked at
random is neither on the ground floor nor has white
walls.
Give your answer as a fraction in its simplest form.

x = 17

step-by-step explanation:

in the given figure, two triangles are inscribed in a circle where ∠bae ≅ ∠dae which makes the side be and de equal so we can write it as:

3x - 24 = x + 10

solving this equation for x to get:

3x - x = 10 + 24

2x = 34

x = 34/2

x = 17

therefore, the value of x = 17.

1st part is 64,000,000

2nd part 500,000

step-by-step explanation: