Mathematics: Please help me with this! Thank you so much!

Please help me with this! Thank you so much!

Ответ:

jillian0013

19.09.2021

$\dashrightarrow \: { \tt{( \frac{3}{4} - \frac{8}{11} ) \div \frac{1}{7} }} \\ \\ \dashrightarrow \: { \tt{ \frac{1}{44} \div \frac{1}{7} }} \\ \\ \dashrightarrow \: { \tt{ \frac{1}{44} \times 7}} \\ \\\dashrightarrow \: { \tt{ \frac{7}{44} }}$

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Ответ:

htx88

19.09.2021

Mathematics

$\large\underline{\bf{Given\: expression}}$

$\huge{( \frac{3}{4} - \frac{8}{11} ) \div \frac{1}{7}}$

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$\large\underline{\bf{On\: solving}}$

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎ $\large{= \frac{(3 \times 11) - (8 \times 4)}{44} \div \frac{1}{7}}$

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎ $\large{ =\frac{1}{44} \times \frac{1}{7}}$

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎ $\large{ = \frac{7}{44}}$

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$\large\underline{\bf{Hence}}$

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎ $\huge\bf\green{ = \frac{7}{44}}$

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Ответ:

sarah7984

20.07.2022

Mathematics

Total number of marbles = 5+7+4 = 16 marbles
Probability of picking a red marble = 5/16
Because the red marble is not returned back after being picked up, the total number of marbles is now 15.
Now,
Probability of picking a yellow marble = 4/15
The probability of picking a red and yellow marble will be the product of these two probabilities which will = 5/16 x 4/15 = 1/12

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