Answer:
H) 320 square units for the surface area
Step-by-step explanation:
20(5.2+5.25+4.5) + 2(1/2(4*5.25)) = 320
B because it has a negative which would make it 0.00002
There is more than one solution because there are two different numbers whose square is 9. One of them is +3. The other is -3.
The fundamental theorem of algebra says every non-zero single-variable polynomial of degree N has exactly N roots, counting multiplicity. Your polynomial is degree 2, so has 2 roots.
Part a- it’s the first one 7b+6=96
part b- b= 1.28571428571