Slope is generally showed by a variable, the variable can be represented by any letter. In this case the variable is represented by x
so the slope is the number that comes before the x, so the slope of this equation is -8
So your answer is A
Answer:

Step-by-step explanation:
If you expand an equation you get its equivalent expression
The formula to get the circumference is 2πr, π being pi and r being your radius.
Your r is 0.9 since the radius is half the diameter.
2πr = 2 x 3.142 x 0.9
= 5.6556cm
≈ 5.7cm
a.

is a proper joint density function if, over its support,
is non-negative and the integral of
is 1. The first condition is easily met as long as
. To meet the second condition, we require

b. Find the marginal joint density of
and
by integrating the joint density with respect to
:


Then


c. This probability can be found by simply integrating the joint density:


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