Help me please I am not good at this stuff

Given :

Area of base of a triangular pyramid = 9 inches

Length of height of triangular pyramid = 10 inches

We know that :

Which means :

Volume of this triangular pyramid :

Thus, the volume of this pyramid = 30 inches³

b) the dogs need to shift their focus to human scent.

a

step-by-step explanation:

the denominator cannot be the same as one of the factors.

8 denominator times 2 denominator = 16

and 7 numerator time 11 = 77

77/16= 77/16 ( they cannot be further simplified)