Calculate the distance between the points C=(-9, 9) and N=(-1,5) in the coordinate plane. Round your answer to the nearest hundredth.

8.94

Step-by-step explanation:

use distance formula

squareroot of (x2-x1)^2 +y2-y1)^2

sqrt (-9 - (-1))^2 +(9 - 5)^2

sqrt (-8)^2 + 4^2

sqrt 64 + 16

sqrt 80

factored becomes

4sqrt of 5 or 8.94427

rounded 8.94

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answer:      

step-by-step explanation:

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: