Where x is the length of the first piece

so the first piece is 3 inches, the second is 6 inches and the third is 19 inches
Answer:
415
Step-by-step explanation:
okay so this is how i do the math in my head
so, 5 x 5 x 5 + 290
5*5= 25
25*5 = 125
125+ 290= 415
1.50x + 6.50y is your algebraic expression.
Answer: 
Step-by-step explanation:


Normally we wouldn't have our square variable be negative, so in order to get rid of that negative sign without changing the equation is by multiplying by -1

Answer:
20
Step-by-step explanation:
2x - 5 = x + 15
2x - x = 5 + 15
x = 20