SOH CAH TOA.
Sin = Opposite / Hypotenuse
Cos = Adjacent / Hypotenuse
Tan = Opposite / Adjacent
In order for us to help you, you need to ask a question that deals with going under math section or a different subject.
5y-x=10
Isolate the variable
add x to both sides
5y-x+x=10+x
5y=10+x
Divide both sides by 5
5y/5=10+x/5
y=2+1/5x
So y is equal to 2+1/5x
The probability of rolling a 6 on the 1st roll is

, since there is only 1 out of 6 sides of the dice that has six pips.
The probability of rolling an odd number is

, since there are 3 out of 6 sides of the dice that has an odd number of pips.

Then the probablity of both events happening one after another is

. You have to multiply both probabilities of the events:
Answer:
B. 97
Step-by-step explanation:
We have that to find our
level, that is the subtraction of 1 by the confidence interval divided by 2. So:

Now, we have to find z in the Ztable as such z has a pvalue of
.
So it is z with a pvalue of
, so 
Now, find M as such

In which
is the standard deviation of the population and n is the size of the sample.
How many students should be sampled to be within 1 drink of the population mean with 95% probability?
This is n when 
We know from preliminary studies that the standard deviation is around 5, so 





We round up, so the correct answer is:
B. 97