In the real world you are not going to have a calculator on you 24/7. Nor will you have a pencil or paper to do longhand. You need to know how to accurately estimate your answers in order to be successful.
Answer: y=-x+-8
Step-by-step explanation:
Proof is in the screenshot below
Answer:
75 computers
Step-by-step explanation:
R 32500 / R 500= 65 sold
65 +10= 75 computers originally
False it can work with non right angles triangles too
Numbers in a problem or related numbers that are easy to work with mentally