Answer:
1a 2dm²= 20000mm² 3dm²=30000mm²
b 18898.8194926 m²
c 0.0054 km²= 540000 dm²
d 1.21931784007 km²
2a 30dm²=3000cm²=300000mm²
b 560cm²=56000mm²
c 7.31cm²=731mm²
54
Step-by-step explanation:
53
52
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31
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35
36
37
<span>5 * 7 = 35*8 =280 280/2 = 140 units answer is B</span>
The maximum mass that elevator can lift is 2100 pounds. This means that mass must be equal to that or less than that. If we use m for allowed mass we can write this as:

The graph is given on the picture. The blue line marks maximum allowed mass, the red line marks actual mass. Grey part contains all allowed values of a mass.
It would be 6 83/100
6.63/1 * 100/100= 663/100= 6 83/100