Kristy rolled 2 number cubes, each labeled 1-6. She rolled the cube 400 times, added the two nurnbers
showing, and recorded the results. About how many
times should Kristy expect to roll a sum of 8?
A) 50 B) 56 C) 65 D) 70
Please help me

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

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14

Tell whether the two rates form a proportion