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Harlamova29_29 [7]
2 years ago
11

In need of help please :)

Mathematics
1 answer:
Anettt [7]2 years ago
5 0

Answer:

okay let's start

Step-by-step explanation:

number \: 1 \\ cos \: b =   \frac{adjacent}{hypotenuse}  \\ cos \: b =  \frac{ac}{cb} \\ \:  \ cos \: b =  \frac{12}{13}  \\

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7 shirts and 4 pants hope i helped
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3 years ago
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Thank you if you help
elena-s [515]
So the second question asks about the perimeter of a rectangular pool and the answer for that is W=87m.

I don’t know about the first question sorry but I’ll try figuring it out.
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3 years ago
Suppose P(E) = 81%; P(E and F) = 9%; and P(E or F) = 65%,
PIT_PIT [208]

Using Venn probabilities, it is found that P(F) = -0.07, which is not a probability, as it is a negative value.

------------------

  • We have two events, E and F.
  • Their probabilities are: P(E) = 0.81, P(E \cap F) = 0.09, P(E \cup F) = 0.65
  • The probabilities are related by the following equation:

P(E \cap F) = P(E) + P(F) - P(E \cup F)

  • Replacing into the equation, we can find P(F).

0.09 = 0.81 + P(F) - 0.65

0.16 + P(F) = 0.09

P(F) = -0.07

P(F) = -0.07, which is not a probability, as it is a negative value.

A similar problem is given at brainly.com/question/21421475

4 0
3 years ago
Marie's journal is 400 pages long. She has used 20% of the journal. How many pages has she used so far?
vitfil [10]

Answer:

40/ or /80

Step-by-step explanation:

Because 400 is a lot and if it's 100% is 400 right so we do 80% what would that be? we don't know right.

What about 100 pages that would be (im pretty sure) 40% or 50%.

I hope this helped!!!

GOODLUCK!!!!!!!!!!

:D

:3

<3

5 0
3 years ago
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Pweasee help..❤!!!!!!!!!!​
Y_Kistochka [10]

Answer: division property of equality

Step-by-step explanation:

8x = 80

You divide the number with the letter you are trying to find (x) on both sides, so 8 divided by 80, you get 10.

6 0
3 years ago
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