Answer:
Step-by-step explanation:
A.
C.
Answer:
n = 225
Step-by-step explanation:
Multiply 15 by 15
Answer:
diameter
Step-by-step explanation:
BD is the diameter of the circle.
By "density" I assume you mean "probability density function". For this to be the case for

, we require

Since

you have

which means
You can solve <span>9/x-4/y=8 for x or for y but NOT at the same time.
Solving for x: </span><span>9/x-4/y=8 Mult all 3 terms by xy to eliminate the fractions.
9(xy)/x - 4xy/y = 8xy => 9y - 4x = 8xy, or 9y = 4x + 8xy = 4x(1+2y)
then 9y = x [ 4(1+2y) ]
9y
therefore x = ------------
4(1+2y)
Solve for y using a similar approach.
</span>