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nlexa [21]
2 years ago
13

Divide and check the answer with formula 252 ÷2​

Mathematics
2 answers:
aliina [53]2 years ago
8 0
Answer:
126

One two six

GaryK [48]2 years ago
3 0

\hookrightarrow \sf \dfrac{252}{2}  \\  \\

\hookrightarrow \sf126

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Bayes' rule can be used to identify and filter spam emails and text messages. This question refers to a large collection of real
Blababa [14]

Answer:

0.134 = 13.4% probability that a message is spam, given that it contains the word "text" (or "txt")

Step-by-step explanation:

We use the conditional probability formula to solve this question. It is

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Contains the word "text", or "txt".

Event B: Spam message.

The word "text" (or "txt") is contained in of all messages, and in of all spam messages.

This means that P(A) = 1

747 of the 5574 total messages () are identified as spam. The word "text" (or "txt") is contained in all of them. So

P(A \cap B) = \frac{747}{5574} = 0.134

Then

P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.134}{1} = 0.134

0.134 = 13.4% probability that a message is spam, given that it contains the word "text" (or "txt")

5 0
3 years ago
Solve for B: AB + 3C = D
Brilliant_brown [7]

If we want to get B by itself, we need to "undo" every operation being done to it. Those operations are (in order):

  • Multiplication by A
  • Addition with 3C

To undo these then, we'll need to:

  • Subtract 3C
  • Divide by A

And, since this is an equation, we'll need to do both of those to the right side as well to keep everything equal. Here we go:

AB + 3C - 3C = D - 3C (subtracting 3C)

AB/A = (D - 3C)/A (dividing by A)

B = (D - 3C)/A

And we're done! If you'd like to see it formatted a little nicer, here's this:

B=\dfrac{D-3C}{A}

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3 years ago
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Rudiy27

Answer:

DEF = 14.5

DEG = 8.5

Step-by-step explanation:

(7x+4) + (5x+1) = 23

12x+5 = 23

x= 1.5

DEF = 14.5

DEG = 8.5

7 0
3 years ago
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Step-by-step explanation:

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2 years ago
186.73 x (-0.0175)<br><br> Please help!!
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