2 years ago

Please help need both answers

Mathematics

1 answer:

Eva8 [605]2 years ago

8 0

Answer:

5) 13% 7) 3/28

Step-by-step explanation:

5)

total number of marbles: 2 + 3 + 5 + 1 + 2 + 2 = 15 marbles.

probability its blue: $\frac{2}{15}$ __in fraction

in percentage: $\frac{2}{15}$ * 100 = 13%

7)

total number of marbles: 4 + 5 + 2 + 9 + 1 = 21

probability of selecting a red marble: 5/21

then 1 marbles is reduced as not replaced.

total marbles: 21 - 1 = 20

probability of getting orange marble: 9/20

total probability: 9/20 * 5/21 = 3/28

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