Abag contains 15 marbles. 7 are blue, 4 are red, 2 marbles are green and 2 marbles are yellow. a marble is taken from the bag at random. what is the probability that it is: blue? yellow? red? green? either blue or red? either red or yellow? blue, green or yellow? not yellow?

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year the population of her town is changing by a constant rate

Find the gradient of f(x,y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?