What is the answer to 5x2 + 7x2 + 5

The answer is: 29

because you multiply 5x2 and get 10 and than multiply 7x2 and you get 14 and than add 10 and 14 and you get 24 but u have to add five so 24 + 5 is 29.

What do jane knows to plan her visit

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