Carlos made up a game where, in a deck of cards, the red cards (hearts and diamonds) are negative and the black cards (spades and clubs) are positive. all face cards are worth 10 points, and number cards are worth their value. samantha has a king of hearts, a jack diamonds and a 3 of spades. write an expression to find the value of her cards.

King of Hearts + Jack of Diamonds + 3 of Spades. Since hearts and diamonds are negative, it becomes -10 – 10 + 3 = 17.

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm