Question

A box contains 4 red and 5 black marbles. Find the probability distribution of the red marbles in a random draw of three marbles. Also find the mean, variance and standard deviation of the distribution​

Answer 1

Answer:

Unit-4 simple equation.pmd - NCERT

an equality sign to show that two expressions have the same value. All of these are equations. 3 + 8 = 11 r + 6 = 14. – 24 = x – 7. 100. – 50. 2.

Explanation:

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Answer 2

Answer:

Phloem is living tissue, responsible for transporting food and other organic materials. Xylem consists of dead cells (parenchyma is the only living cells present in the xylem). ... They comprise of phloem fibres, sieve tubes, sieve cells, phloem parenchyma and companion cells.

Explanation:

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