Answer:
mean of other sixteen numbers is 40
Step-by-step explanation:
let the total of 20 numbers be x
x/20 = 42
20×x/20 =42×20
x=840
let the total of four numbers be y
y/4=50
4×y/4 = 50×4
y=200
so as to get the difference of x - y
=840-200
=640
the average of sixteen numbers
=640/16
=40
therefore the mean of sixteen numbers is 40
Answer: 32
Step-by-step explanation:
Answer:
Step-by-step explanation:
230.86/23.8= and you'll have your answer (I don't have a calculator on me sorry)
The answer is three significant figures. The 1 and the 7 are both significant, because they are non-zero quantities.
This is where significant figures gets a little more complicated, because if a zero is used as a placeholder (i.e. 0.00027 cm) then it is insignificant.
But in the case above, the zero isn't being used as a placeholder, and thus, is significant.
These are all of the possible ratios:
- 1:3
- 8:24
-4:12
-2:6
Please vote my answer brainliest. thanks!