-7=-9+n/8
Add 9 to both sides
2=n/8
Multiply 8 on both sides
Final Answer: 16=n
50,000
because if it was 55,000 it would be rounded up to 60,000, if it has 5 or more it's rounded up and if it has 4 or less it gets rounded down
There are various statistical tests which determine the differences between groups or more like anova, t-test, f-test, etc. examples on the other hand of test statistics that examine the relationship of variables includes linear regression which tests the r^2 and correlation.
Answer:
S10 = 320
Step-by-step explanation:
The formula for calculating the sum of the nth term of an AP is expressed as
Sn = n/2(2a+(n-1)d))
Given
a = 4
d = 5
n = 10
S10 =10/2{2(5)+(10-1)5}
S10 =5{10+9(6)}
S10 =5{10+54}
S10 = 5(64)
S10 = 320
Hence the sum of the first ten terms of the sequence is 320
The one on the left represent 5x2 =10 and the one on the right represent 5+2=7 :)
