I would go with either NIST or SIKG. I put SIKG because the abbreviation for mass is kg and you r look for the SI unit of mass and then the SI stands for International System of units. So when you put both SI And KG (kilograms=mass) it makes SIKG.
This is probably not right but I tried.
Good Luck!
The answer is going to be .65 because
1)You subtract 2.95 from 3.6
=3.6-2.95=.65
2)You add 2.95+.65
=3.6
Use pythagorians theorem a^2 + b^2 = c^2. 4^+20^ = 20.40 feet. The ladder is 20.40 feet long.
The answer is 90 because sum is the answer of a addition problem and 40 + 50 is 90
You're answer should be C: 8.06; 4.03
Hope this helps!
