Please do all! twenty points per answer :) 1) The points (0, 5) and (0,-5) are the endpoints of the diameter of a circle. The point (3, y) is on the circle. What is a value for y?

2)Find the equation of a circle with center in the first quadrant and is tangent to the lines
x = 8, y = 3, and x = 14.

3)The points (4,-1) and (-6,7) are the endpoints of the diameter of a circle. What is the equation of the circle?

4) The points (4,-1) and (-6,7) are the endpoints of the diameter of a circle. What is the
equation of the circle?

step-by-step explanation:

one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.  

is there a picture

step-by-step explanation:

answer: 16

step-by-step explanation: first you would add 6+6 which equals 12 then add 2+2 which equals 4. then add 12 + 4 which is 16.

hope this ^_^

the answer is $42.96

step-by-step explanation: