The sum of the two angles of the parallelogram is 170 ° to determine the other angles

Konichiwa (hi in japanese , as im clearly an anime fan)

anyways,

We know that, the sum of all angles of a parallelogram = 360°

So, let all the angles be angles P, Q, R and angle S.

Let, <P + <Q = 170°

So, <P + <Q + <R + <S = 360°

=> 170° + <R + <S = 360°

=> <R + <S = 360°-170° = 190° (Ans.)

So, the sum of other two angles becomes 190°

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 barter