a-7=3(b+2)
1. Simplify/Combine like terms
a-7=3b+6
2. Remove a variable
a-7-a=3b+6-a
7=2b+6
3. Isolate the variable
7-6=2b-6
1=2b
4. Divide
1/2=2b/2
b=1/2
1/2g?
The shaded area will be given by:
A=(area of the outer circle)-(area of the inner circle)
area of outer circle:
A=πr²
A=π(2x)²=4x²π
Area of the inner circle:
A=π×6²=36π
Thus the shaded area will be:
4x²π-36π=364π
4x²π=400π
4x²=400
x²=100
x=√100
x=10 cm
Value if x is 10 cm
George descended 3,000 feet above sea level
