Answer:
set width as a, so length is 2a-4
a(2a-4)=70
2a^2 - 4a = 70
a^2 - 2a = 35
a^2 - 2a + 1 = 36
(a-1)^2 = 36 Because width can not be negative so we only take possitive answer.
(a-1) = 6
a = 7
2(7) - 4
=14-4
=10
Length = 10
Width = 7
mama giraffe: x
baby giraffe: 
= 15
= (3)15
3x + 2x = 45
5x = 45
x = 9
baby giraffe:
=
= 2(3) = 6
Answer: 6 m
3.2019 is the answer to your question
Answer:
6) y = -x - 5
7) y =
x + 3
Step-by-step explanation:
format y = mx + b