A large bag of marbles contains red (R) and blue (B) marbles. Marbles are pulled one at a time, recorded, and placed back in the bag. Estimate the percentage of blue marbles in the bag. R R R B R R R R R R B R R R B

A. 60%

B. 80%

C. 25%

D. 20%

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Ответ:

bbbbbbbbbbbb62

02.01.2021

Mathematics

$\frac{5^{-6} \cdot 5^2}{5^{-8}}=\frac{5^{-6+2}}{5^{-8}}=\frac{5^{-4}}{5^{-8}}=5^{-4-(-8)}=5^{-4+8}=5^4$

The answer is C. 5⁴.

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A large bag of marbles contains red (R) and blue (B) marbles. Marbles are pulled one at a time, recorded, and placed back in the bag. Estimate the percentage of blue marbles in the bag. R R R B R R R R R R B R R R B A. 60% B. 80% C. 25% D. 20%