Answer:
see explanation
Step-by-step explanation:
Central angles are angles at the centre of the circle subtended by 2 radii
Angles that meet this criteria are
∠AOB, ∠BOC, ∠AOC
Answer:
x + 14 = 2(x + 6)
x = 2
Step-by-step explanation:
Let
Algebra book age = x
Chemistry book age = x + 8
In 6 years time
Chemistry book age = x + 8 + 6
= x + 14
Algebra book age = x + 6
the chemistry book will be twice as old as the Algebra book.
x + 14 = 2(x+6)
x + 14 = 2x + 12
x - 2x = 12 - 14
- x = - 2
Divide both sides by -1
x = 2
Check:
Chemistry book age = x + 14
= 2 + 14
= 16
Algebra book age = x + 6
= 2 + 6
= 8
A = √(15²-9²) = √(225-81) = √144 = 12
