Answer:
16
Step-by-step explanation:
becasue from -21 to -5 it's 16 units (-21 - -5= 16).
To find the height, you would do the area divided by the base, or in this case,187.5 / 25 which equals 7.5 inches. Hope this helped!
For 19, you would do 6b+8b=175, 14b=175, b=12.5. YZ would be 8b=YZ, 8*12.5=YZ, 100=YZ.
The answer is true hope this helps