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yawa3891 [41]
2 years ago
8

Prove cos a = 5/13 pls solve it and no link pls..........​

Mathematics
1 answer:
Scorpion4ik [409]2 years ago
3 0

<u>Answer</u> : The demonstration is below :)

Step-by-step explanation :

<u>We use Pythagoras' </u><u>theorem </u><u>:</u>

  • In the triangle ABC we have :

AB² = AC² - BC² = 15² - 9² = 144 = 12²

  • In the triangle ABD we have :

DB² = AD² - AB² = 13² - 12² = 5²

cos(a) = BD/AD = 5/13

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A survey was conducted to determine the popularity of three foods among students. The data collected from 75 students are summar
Andrews [41]

Answer:

20

Step-by-step explanation:

Total no = 75

N (P) = 48 , N (H) = 45 , N (T) = 58

N (P∩H) = 28 , N (H∩T) = 37 , N (P∩T) = 40

N (P∩H∩T) = 25

Total no = N (P) + N (H) + N (T) - N (P∩H)  -  N (H∩T) - N (P∩T) + N (P∩H∩T) + neither

75 = 48 + 45 + 58 - 28 - 37 - 40 + 25 + neither

75 = 71 + neither → neither = 4

N (only P) = N (P) - N (P∩H)  - N (P∩T)  + N (P∩H∩T) = 48 - 28 - 40 + 25 = 5

N (only H) = N (H) - N (P∩H) - N (H∩T) +  N (P∩H∩T) = 45 - 28 - 37 + 25 = 5

N (only T) = N (T) - N (H∩T) - N (P∩T) + N (P∩H∩T) = 58 - 37 - 40 + 25 = 6

So, total liking either one or neither = 4 + 5 + 5 + 6 = 20

4 0
3 years ago
What is the value represented by the letter A on the box plot of the data?
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5 0
2 years ago
I will do brainiest! Show work!! plz help
rosijanka [135]

Answer:

p=25t because for each hour 25 tickets are sold

Step-by-step explanation:

8 0
3 years ago
X+20≥-7 i need help pls lollllllllllllllllllllllllll
Zina [86]

Answer:

Step-by-step explanation:

x is greater or equal to 13

7 0
2 years ago
Mrs. Haley baked apple pies for her family. The boys ate 9/10 of a pie and the girls ate 2/5 of a pie. How much more pie did the
garik1379 [7]

Answer: The boys ate half a pie more than the girls did (5/10 more).

Step-by-step explanation:

2/5 = 4/10

The difference between 9/10 and 4/10 is 5/10, or one half, so that's your answer.

4 0
3 years ago
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