If 20 is added to the data set below, which statement will be true?

50, 55, 55, 60, 62

group of answer choices

the mean will increase.

the mode will decrease.

the mean will decrease.

the median will be 20.

answer: the mean will decrease

step-by-step explanation:

20 is the lowest number if you put it in the data set, if you subtract the 2nd smallest number to 20, you would get a difference of 30.

so, this means that the mean will decrease by the least, 8-13, leaving that the mean cannot be 20, the mode is still the same, it doesn't even touch the mode if you put 20 in the data set. the mean cannot increase with a smaller number.

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

step-by-step explanation:

divide, then simplify your answer.

1. make -15.66 ÷   5.8 a fraction. then divide.

2. simplify.  

3. final answer.