Answer:
Roughly 18,000
Step-by-step explanation:
When you need to do rough mental math, you can do something like 720 vs 25 or 30 which is pretty simple to do in your head.
If you are very proficient in mental math, you can do something like 720 * 25, which is harder, but if you know the tricks, you can do this quickly.
720 * 25
Multiply 25 by 7.
175
Add two zeros.
17,500
Multiply 25 by 2
50
Add a zero.
500.
17500 + 500 = 18000
Its comparing least times, so 9.675 would be the winning time.why?you ask.well, change all the decimals to the thousandths(9.750,9.700,9.675). now you could see which is the least.
Answer:
f(x)=750-15t
Step-by-step explanation:
He starts off at 750 meters, and he decends 15 meters psr minute
Answer:
Factors of 20: 1, 2, 4, 5, 10, 20.
Step-by-step explanation:
