Answer:

Step-by-step explanation:
To write the equation using a center and a radius, use the vertex form of the equation.

Substitute the values h=10 and k=4 into the equation along with r = 4.

Answer:
45 minutes
Step-by-step explanation:
let after t hours they meet after the second runner starts.
15 minutes=1/4 hour.
6(t+1/4)=8t
6t+6/4=8t
8t-6t=6/4
2t=3/2
t=3/2* 1/2=3/4 hours=45 minutes
Answer:
2/3
Step-by-step explanation:
1/3 x 2/1 = 2/3
The solution is 4x+2x=6x then 6x+10=solution
£1=100p
100-22=78p
He gets 78p