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sergij07 [2.7K]
3 years ago
12

What is the answer for r+11+8r=29

Mathematics
1 answer:
xxTIMURxx [149]3 years ago
5 0
You should first add -11 on both sides of the equation so you will have:
r + 8r = 29 -11 ⇒ 9r = 18 ⇒ r = 18/9 ⇒ r = 2 :)))
i hope this is helpful 
have anice day 
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Answer:

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Step-by-step explanation:

The table that represents the  hair and eye colors of thirty students of the fifth grade are given in table as:

                         Brown hair          Blonde hair              Total

Green eyes           9                       6                               15

Brown eyes          10                       5                              15

Total                     19                        11                             30

No, the events  "brown hair" and "brown eyes" are not independent.

Since, two events A and B are said to be independent if:

P(A∩B)=P(A)×P(B)

where P denotes the probability of an event.

Here we have:

A= students having brown hair.

B= students having brown eyes.

A∩B= students having both brown hair and brown eyes.

Now,

P(A)=19/30  (ratio of addition of first column to the total entries)

P(B)=15/30  ( ratio of addition of second row to the total entries)

Also,

P(A∩B)=10/30

Now as:

P(A∩B) ≠ P(A)×P(B)

Hence, the two events are not independent.

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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