1. Solve 9a = 27. The solution is a =

Mathematics

2 answers:

Lana71 [14]2 years ago

7 0

Answer: 3

Step-by-step explanation: To solve for A we need to get it by itself by doing the inverse of mulitplication, which is, division. 27/9=3, so a=3.

kompoz [17]2 years ago

5 0

Answer:

Step-by-step explanation:

Because 9 x 3 = 27, the variable "a" would be equal to 3. When a variable is next to a number, you multiply it with the coefficient (in this situation, it would be the 9).

Hope this helps.

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Answer:

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P(7) = 0.079

Step-by-step explanation:

Let x be the number of adults who believe in reincarnation.

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x follows binomial distribution:

P(x) = $\left(\begin{array}{ccc}n\\x\end{array}\right) (p)^x(1-p)^{n-x}$

where

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p = probability given = 0.4

P(7) = $\left(\begin{array}{ccc}8\\7\end{array}\right) (0.4)^7(1-0.4)^{8-7}$

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Rounding off to 3 decimal positions

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lisabon 2012 [21]

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Step-by-step explanation:

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