HELP QUICK A portion of the Quadratic Fomul proof is shown in the missing statement
Statements
Reasons
X +
400 D
4a 40
Find a common denominator on the right side of the equation
20
4ac
X +
b
2a
Aard the fractions together on the right side of the equation
(+
b
2a
bac
4a
Rewrite the perfect square trinomial on the loft side of the equation as a binomial squared
X +
12 - 400
4a?
Take the square root of both sides of the equation
2a
2
Simply the right side of the equation
b
2a
4ac
2a
- 400
4a
2a
X +
b
2a
40c
20
4ac
X+
2a
WILL MARK BRAINLIEST IF CORRECT!

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:

the answer is b

60°

step-by-step explanation:

the measure angle of c in an isosceles triangle abc is 60° because in isosceles triangle,the measures of all the angles is 60°.