Michael has a drawer with 8 pairs of black socks and 12 pairs of white socks. Without looking he takes a white pair of socks out of the drawer. What is the probability that the next pair he takes out is black?

A) 11/19

B) 11/20

C) 8/11

D) 8/19

Ellen mixed / dfrac1{4}/text{ kg} 4 1 kgstart fraction, 1, divided by, 4, end fraction, start text, space, k, g, end text of flour with / dfrac{2}{9}/text{ kg} 9 2 kgstart fraction, 2, divided by, 9, end fraction, start text, space, k, g, end text

On Monday, Sam spent 3 and a half hours studying. On Tuesday she spent 1 and 4 fifths of an hour studying, what is the combined time she spent studying?

Indicate whether each of the following statements is true or false (brie y explain your reason). (a) [1pt] Consider a standard LP with four variables and three constraints.

Nine increased by the product of a number and 2 is less than or equal to 27. Use the variable w for the unknown number.

How do you write 3 1/6 as a decimal

How to i make this number sentence correct with adding parenthesis? 4² + (-3) - (-5) * 2 = 20

Are the ratios 5:15 and 1:3 equivalent

Find a rational number halfway in between the two numbers 7/8 and 2/7

Bag a contains 7x counters bag b contains 2x counters Five counters are taken from bag a and put in bag b

Angela and Doreen each want to buy the same comb. Angela still needs 58 cents to buy a comb and Doreen still needs 6 cents. If they want to combine their money, they still do not have enough. What is the most the comb could cost?