98% of dr. williams patients end up with 20-30 vision or better. find the probability that exactly 4 of her next 6 patients end up with 20-30 vision or better.

0.1095

Step-by-step explanation:

Data:

Let:

probability of patients getting well = 0.98

The number of patients. n = 4

The variables are independent, therefore, n = 6

The probability of patients getting 20 - 30 vision, is given by:

P = 4C3 (0.97) (3) (0.03) (1)

  = 0.1095

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:

#15. square

step-by-step explanation:

because quadrilatural (idk how to spell it) means somthing that is not 3d or like, equal sides (or somthing like that   you know what i meanz)

hope this halps!

bai!