Question

only correct answer with explanation of all 5 questions then only brainlist​

Answer 1

Step-by-step explanation:

Q5. xi. f. fixi

5. 7. 35

10. 12. . 120

15. 15. 225

20. 8. 160

25. 3. 75

30. 5. 150

30. 765

mean = sum of fixi/sum of fi

= 765/30

= 25.5

Q1. i) P(perfect square b/w 91 to 99) = 0/96=0

ii) P(multiple of 7) = 14/99

Q2. (9p-5q)²+180pq

(9p)²+(5q)²-2(9p)(5q)+180pq

81p²+25q²-90pq+180pq

81p²+25q²+90pq

(9p)²+(5q)²+2(9p)(5q)

(9p+5q)²

Q4. the angle of a straight line is 180°

x+x+10+x+20=180

3x+30=180

3x=180-30

3x=150

x=50°

angle COD=x+20°=50+20=70°

angle AOC =x+10°=50+10=60°

I don't know the third answer.. hope you'll understand

hope this helps you

Answer 2

Answer:

hiiiii how are you happy diwali stay healthy and happy ❤️.