Answer: 9
Step-by-step explanation: 9 x 9 equals 81 and 81 add 9 is 90
First we must find the volume of the cube. This is equal to side^3. 4^3=64 cubic inches. Since the pebbles are .5 pounds per cubic inch and we assume it is packed we multiply the volume by .5
This will give 32 pounds
Answer:

Step-by-step explanation:
You are dividing x by 5 and then subtracting 4.
Answer:I believe the slope is less
Step-by-step explanation:
Answer:
v = 21
Step-by-step explanation:
the sum of the interior angles of a triangle is 180 degrees
add all 3 angle measures and set equal to 180:
4v + 2v + 54 = 180
6v = 126
v = 21