Blood diamonds. according to global research news (mar. 4, 2014), one-fourth of all rough diamonds produced in the world are blood diamonds, i. e., diamonds mined to finance war or an insurgency. in a random sample of 700 rough diamonds purchased by a diamond buyer, let x be the number that are blood diamonds. a. find the mean of x. b. find the standard deviation of x. c. find the z-score for the value x = 200. d. find the approximate probability that the number of the 700 rough diamonds that are blood diamonds is less than or equal to 200.

Are triangles the congruent? write the congruency statement. what is the congruency that proves they are congruent? what is the perimeter of ∆pqr?

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

Adistribution has the five-number summary shown below. what is the third quartile, q3, of this distribution? 22, 34, 41, 55, 62