To solve this problem you must apply the proccedure shown below:
1. You must use the formula for calculate the area of a rectangle:
2. Now, you must solve for the width:
Therefore, the answer is:
You've certainly tried hard to describe it in enough detail so that
it can be answered without seeing the diagram. Sadly, it's not
enough.
We still don't know what's tangent to what, where point 'C' is, or
how any of this relates to a circle. You'll have to figure out some
way or us to see the diagram.
1. 48 ? -8 = -6
48<em>/</em> -8 = -6
2. -40 ? 8 = -5
-40<em>/</em> 8 = -5
3. 12 ? -2 = 14
12 <em>-</em> (-2) = 14
12 + 2 = 14
4. 18 ? -12 = 6
18 <em>+</em> (-12) = 6
18 - 12 = 6
5. 18 ? -20 = -2
18 <em>+</em> (-20) = -2
18 - 20 = -2
6. 22 ? -0.5 = -11
22 <em>*</em> -0.5 = -11
22 / -2 = -11
You just have to check your work :)
<em>r</em> should be 4/7. You're comparing the given series to a geometric series that converges. By the limit comparison test, you have
and since this limit is positive and finite, and the series you're comparing to is convergent, then the first series must also be convergent.