The standard deviation is the square root of the variance.
sqrt 324 = 18 <==
Answer: x>11/3
Step-by-step explanation:
Let's solve your inequality step-by-step.
Step 1: Simplify both sides of the inequality.
Step 2: Subtract x from both sides.
Step 3: Subtract 1/4 from both sides.
Step 4: Multiply both sides by 4/(-1).
Let

, so that

. Then

which has two solutions,

and

. So the solutions in terms of

would be

Answer:
36
Step-by-step explanation:
is made up of s + r, and since r is
of
we know r must be the remaining
of
.
We can solve for
by using this equation:

1. 2 fifths of
is 24
2. multiply both sides by
to isolate 
3.
is 60°
We can now solve for r

1. the equation the problem gave us
2. substitute
for 60 (we solved for it before)
3.
is 36°