Answer:
Usally the fastest method to calculating a problem is to do it in your head. With enough practice your brain will be faster then most tools, ganing efficiency with practice.
Answer:
Step-by-step explanation:
In your head:
5 * 7 = 35 so its 5 point something with remainder 5.
7*7 = 49 so its 5.7 approximately.
There is 69.147 ML of acid
since we round to the nearest tenth it is 69.1 ML of acid
Answer:
1/5
Step-by-step explanation: