3x - 18 = 42
3x = 42 + 18
3x = 60
x = 60/3
x = 20
Answer:
The building is 187.5 feet tall.
Step-by-step explanation:
A nearby person is 6 feet tall, and casts a shadow that is 8 feet long.
This means that the relation between the real height and the shadow is given by:

A tall building casts a shadow that is 250 feet long. How tall is the building?*
The real height is three fourths of the shadow. So

The building is 187.5 feet tall.
Answer:
arc FD = 236°
Step-by-step explanation:
The measure of the arc is equal to the measure of the central angle it subtends, thus
arc FD = arc FE + arc ED = 146° + 90° = 236°
4 + 2h < -3
2h < -7
h < -3.5
x ∈ (-∞, -3.5)