Answer:
The mean for the combined sample = 6.
Step-by-step explanation:
We have been given that one sample of n = 10 scores has a mean of M = 8.
So the sum of 10 scores for 1st sample will be: 
We are also told that second sample of n = 5 scores has a mean of M = 2.
So the sum of 5 scores for 2nd sample will be: 
When the both samples are combined, so total points will be:
and total scores will be
.



Therefore, the mean for the combined sample will be 6.
-7 is the missing exponent
Answer:
Please check the explanation!
Step-by-step explanation:
Given the polynomial




so expanding summation

solving




also solving






similarly, the result of the remaining terms can be solved such as




so substituting all the solved results in the expression


Therefore,

Answer:
m = 21
n= 25
Step-by-step explanation:
the equations are:
n + m= 46
5m-30 = 3n
plz vote brainliest :)
Answer:
if he sells 12 every 8 months, supposing the trend continues, in 34 months he’ll sell...
12(properties) = 8 months
12/8 = 1 month
1 month = 1.5(properties)
2 months = 3 properties
(since 1.5 properties is unrealistic, but it helps in the math, to find for one month)
so for 34 months he’ll sell...
1.5*34 = 51 properties