Answer:
1. x=2 2. x-19/2 3. x=-2 4.=3
Step-by-step explanation:
Step-by-step explanation:
sorry dude my last brain cell ran after exam
Answer:
Radius is 5 units
Step-by-step explanation:
The radius of a circle will always be 1/2 of the diameter.
This gives the formula:

(substitute known values)

(divide 10 by 2)

Therefore the radius is five
To do this, change into common denominators. The common denominator is 21 so change the problem from 1/3 + 1/7 to 7/21 + 3/21. This gives you 10/21. It is already in simplest form.