# Geometry

posted by .

Find the coordinate of the midpoint of a segment with the endpoints at –9 and 6.
A.1.5
B.–1.5
C.2
D.–3

• Geometry -

the midpoint is halfway between the two values.

The difference between -9 and 6 is 15. (That is, 6 - (-9)) Half that difference is 15/2. So, add half the difference to the smaller value:

-9 + 15/2 = -3/2

or, subtract half the difference from the larger value:

6 - 15/2 = -3/2

Or (and this is a much better and simpler way), a value halfway between two other values, a and b, is their average: (a+b)/2

(-9+6)/2 = -3/2

So, choice B is correct.

## Similar Questions

1. ### geometry

find the midpoint M of the segment with endpoints[1,10] and [-13,-6].
2. ### geometry

if a pointis onthe perpendicular bisector of a segment,then it is:A. the midpoint of the segment,B.equidistant from the endpoints of the segment. C. on the segment. D.equidistant from the midpoint and one endpoint of the segment.
3. ### geometry

Find the midpoint of the segment with endpoints 8, 3and 2, 12 .
4. ### Geometry

Find the coordinates of the midpoint of a segment having the given endpoints. Then find the distance between the endpoints. 1. G(0,0), H(-3,4) 2. A(-4,-4), W(-2,2) 3. N(5,2), K(-2,8)
5. ### Geometry

Find the midpoint of the segment with the given endpoints. M(–2, 1) and O(–3, 2)
6. ### Geometry

11. PB is a line segment on a number line it has endpoints at -2 and 12 what is the coordinate of its midpoint Can someone explain this to me?
7. ### Geometry

Line pb is a line segment on a number line. It has endpoints at -2 and 12. What is the coordinate of its midpoint. My answer would be the total length pf pb is 14 units so the midpoint would be 7.
8. ### geometry

A line segment on a number line has its endpoints at -9 and 6 find the coordinate of the midpoint of the segment please help the answer choices are A.1.5 B.-1.5 C.2 D.-3
9. ### math

1.A line segment on a number line has its endpoints at -9 and 6 find the coordinate of the midpoint of the segment. Answer choices are A.1.5 B.-1.5 C.2 D.-3 2.find the coordinate of the midpoint of HX given that H(-1,3) and X(7,-1). …
10. ### Geometry

PB is a line segment on a number line. It has endpoints at -2 and 12. What is the coordinate of its midpoint?

More Similar Questions