Answer:
Dude! Stop telling people to do your work on DeltaMath
Step-by-step explanation:
Answer:
17) 
18) 
19) 14x³y²
20)
π
Step-by-step explanation:
17)
Area of triangle = 1/2*b*h
A = 1/2(4a²b)(3ab)
A = 6(a³b²)
18)
A = 1/2(4mn⁵)(20m³n⁵)
A = (40)(m⁴n¹⁰)
19)
A = 2 (1/2)(2xy)(3x²y)
A = (6x³y²) + (4x²y*2xy)
A = 6x³y² + 8x³y²
A = 14x³y²
20)
A = (3xy³)²
A = 3² x² (y³)²
Ok. So remember those questions you got in kindergarten example: 40 people were asked which was the nicest fruit in their opinion and here is a graph of what they thought was the nicest. So people use number bars as a way to organize problems. Does this make any sense? I will help in comments if it doesn't.