First you distribute...
8 + 4x - 20
Then you simplify...
4x - 12
Done
Given:
one person can produce:
E = <span>300 BTUs of body heat per hour
dimensions of the bedroom is:
V = </span><span>15 ft × 12 ft × 10 ft
required: is the energy per volume if 2 persons sleeps in 7 hours
let T be the total energy produce per volume
T = (</span><span>300 BTU per hour per person) ( 7 hours) ( 2 person) / ( </span> <span>15 ft × 12 ft × 10 ft)
T = 2.3 BTU / ft^3</span>
The number of lights switched on in a room and the room's brightness.
Answer:
A= Length x Width
A= 27 x (1/3 x 27 + 4)
A=27 x (9 + 4)
A= 27 x 13
A= 351
Step-by-step explanation:
ye