Answer:
31.5
Step-by-step explanation:
Area of a rectangle = lw
Substitute: 7*3 = 21
Area of a Triangle = 1/2*bh
Substitute: 1/2*(3)(7) = 10.5
Area = 21 + 10.5 = 31.5
12m²n² -8mn +1
[6mn-1]•[ 2mn-1]
[ 6mn•2mn + 6mn•-1 + -1•2mn +-1•-1]
= [ 12 m²n² -6mn -2mn +1]
= [ 12m²n2-8mn+1]
.........
See the attached picture for the solution:
Answer:
3,18 4,27
Step-by-step explanation: