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Svetradugi [14.3K]
3 years ago
15

Which expression is equivalent to 3^2-7?

Mathematics
1 answer:
Hunter-Best [27]3 years ago
4 0
3 squared becomes 9. 9-7 equals 2, which is the final answer.
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Answer:

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Step-by-step explanation:

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How do I answer this question?
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14. If P(A) = 0.4 and P(B) = 0.5 and P(A and B) = 0.2, then P(B|A) =
Vadim26 [7]

Answer:

14) b)  P(B/A) = 0.50

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Step-by-step explanation:

14)

Given P(A) = 0.4 and P(B) = 0.5 and P(A and B) = 0.2

Conditional probability of B given that A

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15)

By using Addition theorem on probability

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3 0
3 years ago
Find the value of x.
Gala2k [10]

Answer:

\large\boxed{2\sqrt7}

Step-by-step explanation:

Look at the picture.

ΔADC and ΔACB are similar. Therefore the corresponding sides are in proportion:

\dfrac{AC}{AD}=\dfrac{AB}{AC}

We have

AC=x,\ AD=2,\ AB=2+12=14

Substitute:

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Answer:

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Step-by-step explanation:

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