Find the distance between k(9, 2) and 1(-3, 9) to the
nearest tenth.
a) 12.5
b) 13.8
c) 13.9
d) 19.3

13.9 (Answer C)

Step-by-step explanation:

As we go from (-3, 9) to (9, 2), x increases by 12 and y decreases by 7.

Picture a triangle with base 12 and height 7,  Use the Pythagrean Theorem to find the length of the hypotenuse, which represents the distance between (-3, 9) and (9, 2):

distance = √(12² + 7²) = √(144 + 49) = √193.

To the nearest tenth, this distance is 13.9 (Answer C)

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:

idk

step-by-step explanation: