Answer:
3
Step-by-step explanation:

7.83 x 10^-7 (the *^* is where the power goes)
Answer: 21.375 cm2
Step-by-step explanation:
Area of rectangle = length x width = 3.5 x 4.4 = 15.75 cm2
Area of triangle = 1/2 x base x height = 1/2 x 2.5 x 4.5 = 5.625 cm2
Add rectangle and triangle area = 21.375 cm2
Answer:
Yes, -1 is reasonable.
Step-by-step explanation:
Sum means adding +.
(6*-1) - 5 = -11