Consider an 9-by-9 board and nine rooks of which five are red and four are blue. suppose you place the rooks on the board in nonattacking positions at random. what is the probability that the red rooks are in rows 1,3,5,7, 9? what is the probability that the red rooks are both in rows 1,2,3,4,5 and in columns 1,2,3,4,5?

Abouncy ball is dropped such that the height of its first bounce is 5.5 feet and each successive bounce is 64% of the previous bounce's height. what would be the height of the 7th bounce of the ball? round to the nearest tenth (if necessary).

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

Enter numbers to write 0.000328 0.000328 in scientific notation. 1 1 0.000328=3.28 × 0 . 000328 = 3 . 28 × =3.28×10 = 3 . 28 × 10