Shelly is using a vase shaped like a triangular prism to display a dozen roses. The volume of the vase is 154 cubic inches with dimensions shown.
h
7 in.
4 in.
What is the height, h, of the vase?

Step-by-step explanation:

Assume the base is right triangle.

The volume:

Substitute values and solve for h:

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.