A bag contains 10 marbles which can be described by Colour and whether it is numbered or lettered as follows:
4 are white and lettered, 2 are white and numbered, 3
yellow and lettered and 1 is yellow and numbered. One marble
is randomly drown from the bag and is found to be white.
what is the probability that it is numbered?​

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Which expressions equal 9 when x=4 and y=1/3 a. x2+6y b. 2x + 3y c. y2-21x d. 5 (x/2) -3y e. 3x-9y

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|