
The appropriate choice is
... D) x = -2 ±√7
We know that a 20%=£15
x=the normal price of a coat =100%
20% / £15=100% / x
x=(100%*£15) / 20%=£75
Answer: the normal price of this coat would be £75.
Answer:
6
Step-by-step explanation:
By the property of intersecting secants outside of a circle. We have:

Answer:
5
Step-by-step explanation:
hope this helps