Answer:
Step-by-step explanation:
l = 14
The perimeter of a rectangle is
P =2(l+w)
The width is x-6
w = x-6
The length is 8 units longer than the width
l = w+8
l = x-6+8
l = x+2
We can substitute this into the equation for Perimeter, which is given as 40
40 = 2(x+2 + x-6)
Combine like terms
40 =2 (2x-4)
Divide by 2
40/2 = 2/2 (2x-4)
20 = 2x-4
Add 4 to each side
20+4 =2x-4+4
24 = 2x
24/2 =2x/2
12=x
We want to know the length
l =12+2
C
42 units²
the area = (11-4) × (9-3)
=7×6 = 42 units²
13 units
d = √(x₂ - x₁)² + (y₂-y₁)²
= √(-8-4)² + (2 - (-3))²
= √(-12)² + (5)²
= √144 + 25
= √169
= 13 units
About more than half!