If the mean and the standard deviation of a continuous random variable that is normally distributed are 50 and 4, respectively, find an interval that contains 68% of the distribution.
Oь
Ос
Od
(46, 54)
(38,62)
(45,55)
(42, 58)

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41

Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters

(10. in the figure, a aabc is drawn tocircumscribe a circle of radius 3 cm ,such thatthe segments bd and dc are respectively oflength 6 cm and 9 cm. find the length ofsides ab and ac.