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3 years ago

help with all these problems 45 points of done well and will mark brainliest help with all of the undone problems plzz

Mathematics

1 answer:

Vikki [24]3 years ago

8 0

Answer:

Page 1:

3. 0

4. 1/2

5. 1

6. 1/2

7. 1/2

8. 1

9. 0

10. 1

11. 1/2

12. 1/2

13. 0

14. 1

Page 2:

15. 1/2

16. almost all of them

17. almost all of his book

18. circle 2/11 write: The other fractions are close to half but 2/11 is close to 0

Page 3:

1. 1/2

2. 1/3

3. 3/4

4. 1/6

5. 8/15

6. 3/5

7. 1/4

8. 1 3/7

9. 1 1/2

10. 2 1/3

11. 5 1/2

12. 4 2/7

13. 5 1/8

14. 1 3/4

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Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 10 17 6 33 Female 11 15 13 39

Akimi4 [234]

Answer:

1 / 12

Step-by-step explanation:

Given the following data:

_______A___ B ___C ___Total

Male__ 10 __ 17 ___6___ 33

Female_ 11__ 15___ 13___ 39

Total___21__ 32__ 19___ 72

Find the probability that the student was male AND got a "C"

Number of males who got C = 6

Total number of student students = 72

P(student was male and got C) = (number of males who got C / total number of students)

= 6 / 72

= 1 / 12

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3 years ago

CosA + cosB + cosC = 1 + 4sinA/2 sinB/2 sinC/2

bulgar [2K]

$\cos(A) + \cos( B ) + \cos(C) \\ = 2 \cos( \frac{A + B}{2} ) \cos( \frac{ A- B}{2} ) + 1 - 2 { \sin }^{2} \frac{C}{2} \\ = 1 + 2\cos( \frac{\pi - C}{2} ) \cos( \frac{A - B}{2} ) - 2 { \sin }^{2} \frac{C}{2} \\ = 1 + 2 \sin \frac{C}{2} \cos( \frac{A - B}{2} ) - 2 { \sin }^{2} \frac{C}{2} \\ = 1 + 2 \sin \frac{C}{2} [ \cos( \frac{A - B}{2} ) - \sin \frac{C}{2}] \\ = 1 + 2 \sin \frac{C}{2} [ \cos( \frac{A - B}{2} ) - \cos( \frac{A + B}{2} )] \\ = 1 + 2 \sin\frac{C}{2} \times 2 \sin( \frac{ \frac{A + B}{2} +\frac{A - B}{2} }{2} ) \sin( \frac{ \frac{A + B}{2} - \frac{A - B}{2} }{2} ) \\ = 1 + 4 \sin \frac{A}{2} \sin \frac{B}{2} \sin \frac{C}{2}$

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3 years ago

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skelet666 [1.2K]

Answer:

y = 5/8 x

Step-by-step explanation:

Since it goes through the origin, the y intercept is zero

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3 years ago

Ms Wilson draws a model

Korolek [52]

I need the model and the rest of the question to help you ;-;

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3 years ago

2. The student council is sponsoring a concert as

Jlenok [28]

Answer:

80 adults must addent to make a complete $1,000

Step-by-step explanation:

You start with the students, $3 for each and 200 of them attend. 3x200=600 dollars in total. Then you would subtract 600 from 1,000. Next you will do the adults, 5x80=400 (The "leftover" cash) $5 for each times 80 adults will be $400 in total.

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3 years ago