document.write( "Question 135710: jennifer has 8 blue marbles, 12 orange marbles, & 10 red marbles
\n" ); document.write( "What is the probability of picking an orange marble.
\n" ); document.write( "Predict the number of times out of 120 Jennifer will pick an orange marble.
\n" ); document.write( "Please help to explain so we can show the work. \n" ); document.write( "

Algebra.Com's Answer #99462 by solver91311(24713) $\"\"$ $\"About$

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There are 8 + 12 + 10 = 30 total marbles, 12 of which are orange. So there are 12 ways that you can pick an orange marble out of 30 possible ways to pick a marble. The probability is therefore $\"12%2F30\"$ . Probability is always the number of successful outcomes divided by the total number of possible outcomes.\r
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\n" ); document.write( "\n" ); document.write( "So, for x number of trials, you would expect $\"%2812%2F30%29x\"$ trials to result in an orange marble. For 120 trials, $\"%2812%2F30%29120\"$ . All you need now is to do the arithmetic. \n" ); document.write( "

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