For E to be the midpoint of DF, it needs to divide DF in 2 equal segments, DE and EF. If E is the midpoint of DF, then DE and EF are equal, so the reason is that the expressions for DE and EF are equal. The reason is:
Subtract. (3x^2+2x−9)−(4x^2−6x+3) Enter your answer, in standard form, in the box.
2 answers:
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Using the given center and point at the circumference, the equation of the circles are:
- a)
- b)
- c)
<h3>What is the equation of a circle?</h3>
- The equation of a circle of radius r and center
is given by:
Item a:
- Center C(5,2), hence
.
The point at the circumference is A(11,10), hence:
Hence:
Item b:
- Center C(-2,-5), hence
.
The point at the circumference is A(3,-17), hence:
Hence:
Item c:
- Center C(5,-1), hence
.
The point at the circumference is A(-2,-5), hence:
Hence:
You can learn more about equation of a circle at brainly.com/question/24307696