Add the 3 ratio portions together: 1 + 4 + 7 = 12
Divide total length by 12:
84/12 = 7
Multiply each ratio portion by 7:
1 x 7 = 7
4 x 7 = 28
7 x 7 = 49
The longest piece is 49 cm
Answer:
16
+ 2t - 6
Step-by-step explanation:

simplify

combine like terms
16
+ 2t - 6
It would be 0.008 because you line up the decimals and multiply
I believe it’s 80 hope it helps