There are 40pupils in a class. 30 of them study Biology, 22 study Physics and 21 study chemistry,15 study physics and Biology, 10 study Physics and chemistry, 13 study biology and chemistry, 2 study physics only, 3 study chemistry only and 7 study biology only. Represent this information on a Venn diagram.
How many pupils study all the subject.
If a student is selected at random, what is the probability that he studies either physics or chemistry.​

10000

step-by-step explanation: divide by 2,

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation:

investment b is an ordinary annuity with $3,909.64 in the account after one year.

step-by-step explanation: