45 min is 3/4 of an hour, 3/4 0f 40 km/h=30 km
75km/h x 2hr=150km
=180km
Total time:3hr
180kh/3hr=60km/h
sorry if im wrong
3.9 can be rounded to 4.
5.3 can be rounded to 5.
4 x 5 = 20
That tells you that 3.9 x 5.3 has a digit in the tens place.
Then you can proceed to multiply 39 and 53, which equals 2067.
(Note: I removed the decimals on purpose)
Now we know that in 2067, the 2 should be in the tens place. That means 0 is in the ones place and that 6 is in the tenths place. That leaves 7 to be in the hundreths place.
Therefore, 3.9 x 5.3 = 20.67
Answer:
UC - Berkley
Step-by-step explanation:
Willard F. Libby was a physical chemist noted for his role in radiocarbon dating.
He received his undergratuate degree in chemistry at University of California at Berkley and taught at University of Chicago's institute for nuclear studies. He received the Nobel Prize in Chemistry
When increasing a percentage I usually just turn the percentage to a decimal. So, let's say you have 100 gallons of gas and it'll get an increase by 20%, just multiply 100 by .20 and you'll get 20, then add 20 to 100 to see what you'll have after. In this case, 15% would be .15, just multiply 22 by .15 to see how much the increase is, then add what you get to 22.
Answer:
Pair of terms
Step-by-step explanation:
