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Answer: 8.2 (choice B)</h3>
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Explanation:
First we'll need the length of segment BD, which I'll call x for now. The similar triangles allow us to set up the proportion below to solve for x
AD/BD = BD/DC
13/x = x/4
13*4 = x^2
52 = x^2
x^2 = 52
x = sqrt(52)
Segment BD is exactly sqrt(52) units long.
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Now focus your attention on triangle BDC. We'll use the pythagorean theorem to find BC
(BD)^2 + (DC)^2 = (BC)^2
( sqrt(52) )^2 + ( 4 )^2 = ( m )^2
52 + 16 = m^2
68 = m^2
m^2 = 68
m = sqrt(68)
m = 8.2462 approximately
m = 8.2
Well lets look here at something.
Tenths are the greatest compared to hundredths or thousandths.
So if that is the case We can tell that 3.008 is the least since it only has one value on the end in the thousandths place (all are 3.??? which is why this stays true)
Tenths place > 0.000 (The First 0)
Hundredths place > 0.000 (Second 0)
Thousandths place > 0.000 (Third 0)
Look for the greater values in all of these. Remember tenths is greater than hundredths and hundredths to thousandths.
So we can order it properly > 3.825, 3.18, 3.09, 3.008
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You need to know mass and speed
1. rate of change of position this is measured in m/s
2. direction in change of position.
