Answer:
Mean =
Standard deviation =
Step-by-step explanation:
x P(x) 
33 0.02 0.66 21.78
34 0.06 2.04 69.36
35 0.1 3.5 122.5
36 0.2 7.2 259.2
37 0.24 8.88 328.56
38 0.26 9.88 375.44
39 0.1 3.9 152.1
40 0.02 0.8 32
1 36.86 1360.9
We are supposed to find mean and standard deviation
Mean =
Standard deviation =
13. 44 + 40 = 84
14. 15 + 81 = 96
15. 13 + 52 = 65
16. 64 + 28 = 92
Answer:
b
Step-by-step explanation:
Answer:
7 x 3/9 = 21/9 = 2.33
11 x 2/3 = 22/3 = 7.33
4/9 x 3/8 = 4/9 x 3 / 8 = 4/3/8 = 1/6
7/9 x 4/5 = 7
/9 ⋅ 4/5 = 28/9/5 = 28/45
1 1/15 x 1/3 = 0.35
If you work backwards, she had 24 before going to the movies. This is 3/5 of what she had originally. Use this to find 1/5 the but dividing 24 by 4 = 8 then multiply by 5 to get back to the original value 8 x 5 = 40
