Help me with math pls 20 pints show work !

the answer is 16x

Step-by-step explanation:

first, you have to add like terms so 6x+10x then you get your answer

To compare the displayed Wright flyer in the museum with the actual plane, we have to compute for the ratio of the corresponding parameter. In this item, for both the display and the actual plane, we are given with the length. Computing for the ratio gives us,
    ratio = length of the model / length of the actual plane

Length of the model = 35 cm
We need to calculate for the length of the model in ft.
    length of the model = (35 cm)(1 in/2.54 cm)(1 ft/12 in)
   length of the model = 1.148 ft

Going back to the equation for the ratio,
   ratio = (1.148 ft)/21 ft
   ratio = 0.055

Hence, the dimensions used in the model is equal to 0.055 times the actual dimensions.

Error may occur because of the number of significant figures considered for rounding up or down of the answers after each calculation.