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irina1246 [14]
3 years ago
14

Can you please Simplify 4a+7b+5a-b

Mathematics
1 answer:
vovangra [49]3 years ago
7 0

Answer:

9a+6b

Step-by-step explanation:

4a+7b+5a-b

First figure out the  a's 4a + 5a = 9a

Then do b's (Remember, if there is no number by the letter then it is 1)

7b - 1b = 6b

So for this to be simplified the answer is 9a+6b

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A drawer contains 4 white socks, 5 black socks, and 3 brown socks. Find the probability that...
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Answer:

5/12

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Step-by-step explanation:

Probability a black sock is selected when a person chooses 1 sock = 5/12

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Probability  a person chooses 3 socks and selects a white first, a black second, and a brown last if the socks are replace = (4/12 * 5/12 * 3/12)*100 =125/36 = 3,47%

Pobability  a person chooses 3 socks and selects a white first, a black second, and a brown last if the socks are NOT replace = (4/12 * 5/11 * 3/ 10)*100 = 50/11 = 4,54%

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Step-by-step explanation:

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