Answer:
In significant figure is

You can turn it into normal decimal number.
In decimal number:

Hope this will help :))
Answer:
14
Step-by-step explanation:
4x4 -2
139 is suppose to be 140 and 18 is suppose to be 20, 140 x 20 = 2800
Home this works
Once you solve for z, you will get z = -1/y + w/xy. :)