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cluponka [151]
2 years ago
12

A box have 5 beads of the same size, but all are different colors. Tina draws a bead randomly from the box, notes its color, the

n puts the bead back in the box. she repeats this 3 times. What is the probability that Tina would pick a red bead on the first draw, then a green bead, and finally a red bead again? A. 1/625 B. 1/180 C. 1/150 D. 1/125
Mathematics
1 answer:
Mila [183]2 years ago
7 0
Since Tina replaces the beads after each pick:

P(R,G,R)=(1/5)(1/5)(1/5)=1/125
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Step-by-step explanation:

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<h3>understanding the direction</h3>

In navigation problems, direction angles are specified a couple of different ways. A <em>bearing</em> is usually an angle in the range [0°, 360°), <em>measured clockwise from north</em>. In land surveying and some other applications, a bearing may be specified as an angle east or west of a north-south line. In this problem we are given the bearing of the second leg of the walk as ...

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<h3>the two vectors</h3>

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<h3>vector sum</h3>

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  a² = b² +o² -2bo·cos(A) . . . . where A is the internal angle at A, 145°

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The distance from the original position is about 5.25 meters.

_____

<em>Additional comment</em>

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2 years ago
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B. 36
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3 0
3 years ago
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