In 1 meter there are 1,000 millimeter.
When you go from small (mm) to big (m) you always divide the small (mm) by what the equivalent of 1 big (m) but in terms of the small (mm)
^^^That's a bit confusing so I will work it out so it makes more sense...

^ this is the equivalent to 1 meter (the big in this case)
3 m = 3,000 mm
Hope this helped! Let me know if there is anything else that I can do!
Answer:
Yup the answer is 15!
Step-by-step explanation:
(3x + 4)^(1/2) = 7
3x + 4 = 49
3x = 45
x = 15
0.55 as a fraction is 11/20
Answer:
t= 9, t= -9
Step-by-step explanation: