78
because 5 times 2 equals 10 so then u times 39 times 2 and get 78
Answer:
66 2/3 cubic inches
Step-by-step explanation:
V=1/3Bh where 'B' is the area of the base and 'h' is height
V = 1/3(20)(10)
V = 200/3 or 66 2/3 cubic inches
Answer:
Step-by-step explanation:
Cross multiplication can be used but not in the beginning. First x should be isolated.

Now subtract
from both sides

In this stage, cross multiplication can be used.

Answer:
The function is increasing for all real values of x where x < -1 and where x > 4
Step-by-step explanation:
The function is "not" increasing for all real values of x where x<0, when
-1 < x < 0