1. Determine the mean and standard deviation from the normal curve. Mean=
Standard Deviation =
34.19 34.1%
2.1%
0.1%
13.696
13.696
2.1%
0.19
55
70
85
100
115
130
145

answer:  

123455421

step-by-step explanation: easy

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:

but which class are u may know that first