If x=1 by 2 root 7, then find the value of x square minus x by 2 root 7 plus 1

the answer is 1

Step-by-step explanation:

x2 equal to 1 by 28 and xby 2root7 equal to 1by 28 so are neglected

8

step-by-step explanation:

this is a subtraction problem.

10 - 2 = 8

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: