If the cube shown is 7 centimeters on all sides, what is the length of the diagonal, x, of the cube? (rounded to the nearest tenth) 12.1 cm
B)
12.7 cm
13.6 cm
D)
13.9 cm

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

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.