Answer:
Step-by-step explanation:
|2+3(-4)|
3*-4 = -12
|2+-12|
|-10|
equals
10
Answer:
Y=2
Step-by-step explanation:
(-4y)+5y=2
(-4y+5y)=2
y=2
Answer:
common ratio(r) = 10
place of the term = n
a = 3
then
sequence of 1 term = ar^(n-1)
= 3×10^(1-1)
= 3× 10^0
= 3×1
= 3
sequence of 2 term = ar^(n-1)
= 3×10¹
= 30
etc...
Step-by-step explanation:
lol id,k if this is right or not sooo yeah
Answer: We are 95% confident that the mean SPF level of sunscreen used by all Cal Poly students is between 29.0813 and 40.0187.
Step-by-step explanation:
Given : Significance level :
Sample size : n= 52 , which is a large sample (n>30), so we use z-test.
By using z-value table,
Critical value:
Sample mean :
Standard deviation :
The confidence interval for population means is given by :-
i.e.
Now, the 95% confidence interval for the ppopulation mean = . (29.0813, 40.0187)
Hence, We are 95% confident that the mean SPF level of sunscreen used by all Cal Poly students is between 29.0813 and 40.0187.
<h3>11√2 is the right answer.</h3>