Richard works at an ice cream shop .regular cones get 2scoops of ice cream ; large cones get 3 scoops of ice cream. one hot saturday ,richard scooped 234 regular cones and 156 large cones .one scoop of ice cream is 3 ounces . a tub of ice cream weights 10 pounds. how many tubs of ice cream did richard use to make the cones.

Step-by-step explanation:

reg. cones get 2 scoops, lg cones get 3 scoops

he scooped 234 regular cones234* 2 = 468 scoops

he scooped 156 lg cones156 * 3 = 468 scoops

thats a total of 468 + 468 = 936 scoops

each scoop weighs 3 ozso the total weight of the ice cream is :

936 * 3 = 2808 oz

1 lb is 16 ozso 2808 oz is :  2808/16 = 175.5 lbs

if a tub of ice cream weighs 10 lbs, then richard used :

175.5 / 10 = 17.55he used 17.55 tubs full

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

(x+3)(x+7)

step-by-step explanation: