skrillex88
21.04.2020 •
Mathematics
A can contains 40 chips: 10 each of read and blue, 12 pink, and the remaining black.If Susan were to remove 3 black and 2 red chips, what is the probability that next one she removes is black? Please Help!
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Ответ:
1:7
Step-by-step explanation:
R = RED | B = BLUE | P = PINK | BL = BLACK | c = chips
10R + 10B + 12P = 32 chips
40c - 32c = 8 black chips
8BL - 3BL = 5 black chips
10R - 2R = 8 red chips
2R + 3BL = 5 chips
40c - 5c = 35 chips
5BL : 35c = 1:7
Ответ:
mean =56
Step-by-step explanation:
sum of all items /number of items
13+91+44+68+54+16+88+74÷8
448÷8
mean= 56