Answer:
a) 2L + 2W = 42
b) L = 2W + 3
c) The system is :
2L + 2W = 42
L - 2W = 3
( add the two equations )
3L + (2w - 2w) = 45
3L = 45
L = 45/3
L = 15 ( Length )
L - 2W = 3
15 - 2W = 3
2W = 15 - 3
W = 12/2
W = 6
Answer:
14.5 feet tall.
Step-by-step explanation:
the shadow increase by 4.5 per inch in height
Answer:
3.90 I think.
Step-by-step explanation:
first, 15×36. then subtract 50 three times.
The square root of 400 is 20