Base is always the number on the bottom. Height is always the line in the middle of the triangle unless the triangle is a right angle (90 degree triangle) and if it is, the number on the side is the height. Here's a picture of it:
Answer:
x3-5
Step-by-step explanation:
the answer for the operation that should be used to solve x+7 is -7
well if it's a 50% off sale then $4