True
Step-by-step explanation:
I double checked it I'm positive
Answer:
f = € 0.20
k = € 2.20
Step-by-step explanation:
k + f = 2.40
k = 2 + f
(2 + f) + f = 2.40
2f = 2.40 - 2
2f = 0.40
f = € 0.20
k = 2 + 0.20 = € 2.20
The area of the shaded portion = 100.48 cm²
Solution:
Radius of the inner circle = 2 cm
Radius of the outer circle = 6 cm
Area of the inner circle = 

Area of the inner circle = 12.56 cm²
Area of the outer circle = 

Area of the outer circle = 113.04 cm²
Area of the shaded portion = Area of the outer circle – Area of the inner circle
= 113.04 cm² – 12.56 cm²
= 100.48 cm²
Hence the area of the shaded portion = 100.48 cm²
Answer: x=-20
Explanation: Multiply both sides by 10
7x = -140
Divide both sides by 7
7x/7 = -140/7
x=-20