Answer: 28
Step-by-step explanation: you have to add 21 + 7 because your counting up from -7 to 21
X-5+5x-12=25
x+5x=25+5+12
6x=42
x=42/6
x=7
If the diameter is at (9,4) and (-3,-2), then the center of the circle is the midpoint of that segment.
and since we know that the radius of a circle is half of the diameter, whatever long that diameter segment is, the radius is half that.


When we are dealing with fractions and decimals.
Answer:
13620000
Step-by-step explanation: