Answer:
You would need to subtract when:
Step-by-step explanation:
If there is a negative number like 4 -5
If there is a parentheses,
A subtraction sign.
Hope this helps you.
Step-by-step explanation:
By the secant-secant theorem, (AC)(BC)=(DC)(x+DC)
Substituting in the given values, (21)(9)=(8)(8+x)
So, 189=64+8x, meaning x = 15.625, or about 15.63.
Answer:
Matter in living things may pass into nonliving things.
Step-by-step explanation: