Answer:
7.625
Step-by-step explanation:
The answer is 90, 25, 155, 115 respectively
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.
6x3+8x2-2x+4=30-2x
10x3+x2+11x+9=21+13x