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ollegr [7]
3 years ago
12

In order to determine the distance and speed of moving objects, radar uses

Geography
1 answer:
Kobotan [32]3 years ago
5 0

Answer:

radio waves

Explanation:

raidio waves

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Which expressions can be used to find the coordinates of the midpoint of PQ with endpoints P(3, –1) and Q(–7, –6)? Select THREE
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A line segment is a straight line with finite length, and thus, have to endpoints(points on either end). The correct options are 2, 3, and 5.

<h3>What are the coordinates of the midpoint of the line segment AB?</h3>

A line segment is a straight line with finite length, and thus, have to endpoints(points on either end).

Suppose we've two endpoints of a line segment as A(p,q), and B(m,n), Then let the midpoint be M(x,y) on that line segment. Then, its coordinates are:

x = \dfrac{p+m}{2}

and

y = \dfrac{q+n}{2}

The midpoint of the points P(3, –1) and Q(–7, –6) is,

x = (-7+3)/2 = -4/2 = -2

y = (-6-1)/2 = -7/2 = -3.5

Now, if we look at the options, the third option will give as the value of the x-coordinate as,

[(1/2)(-7-3)] + 3

= [(1/2)(-10)] + 3

= -5 + 3

= -2

This is the actual coordinate of the midpoint, therefore, this option is correct.

Similarly, the option two expresses the y-coordinate of the midpoint,

(-1 - 6)/2 = -3.5

Also, option five correctly depicts the value of y-coordinate,

-(5/2)-1 = -2.5 - 1 = -3.5

Hence, the correct options are 2, 3, and 5.

Learn more about Line:

brainly.com/question/21511618

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