Answer:
More than 1/2.
Step-by-step explanation:
1/2 in decimal form is 0.5, and since 0.7 is greater than 0.5, that means it is greater than 1/2.
If you simply it down you get

so X can technically be any number
Answer: 13
Step-by-step explanation: If you add 13 to itself 60 times, you will get 780.
i can't really see the image but i'm sure it's pretty cool (:
So hmm notice the picture below
you have the center, and a point on the circle... all you need is the radius

then use that radius in the circle's equation