The answer is 27 because the are nine options which can be recombined in 3 independent ways. Therefore, 9*3=27
The formula for the standard error is this:
σM = σ / √N
where
σM is the standard error
σ is the standard deviation
N is the number of samples
So,
σM = 0.45 / √50
σM = 0.0636 or 6.36%
The standard error is 0.0636
i think you answer would be b "omg all the b's xD" I MIGHT BE WRONG THO and if i am in suuuper sorry :/
The exponent only applies to the x not the 4
so only the x has permission to move to the denominator
this leaves you with 4/x^3
There's my answer
25/100
27/108
31/124
these three equal 1/4 or 1:4
I hope that right