There's a test with 100 questions all having an option for an answer of a b c d or e. if you guessed on all the questions what is the probability you would get 25 right. explain how you got to this conclusion

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

The weights of players in a basketball league are distributed normally. the distance (d) of each player's weight (w) from the mean of 86 kilograms was computed as follows: d = |w - 86| if d is greater than 7 for approximately 5% of the players, what is the approximate standard deviation of the players' weights? a. 1.75 kilograms b. 3.5 kilograms c. 4.3 kilograms d. 7 kilograms

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)