<u><em>**Answer:**</em></u>

Part a .............> x = 11

Part b .............> k = 57.2

Part c .............> y = 9.2

<u><em>**Explanation:**</em></u>

The three problems deal with inverse variation between two variables

An inverse variation relation between two variables means that when one of the variables increases, the other will decrease (and vice versa)

<u>Mathematically, an inverse variation relation is represented as follows:</u>

where x and y are the two variables and k is the constant of variation

<u><em>**Now, let's check the givens:**</em></u>

<u>**Part a:**</u>

We are given that y = 3 and k = 33

<u>Substitute in the original relation and solve for x as follows:</u>

<u>**Part b:**</u>

We are given that y = 11 and x = 5.2

<u>Substitute in the original relation and solve for k as follows:</u>

<u>**Part c:**</u>

We are given that x=7.8 and k=72

<u>Substitute in the original relation and solve for y as follows:</u>

to the nearest tenth

Hope this helps :)

**Answer:**

1.end point continues in one direction

2. point were two line segemnt, lines, rays meet

3. measures 90 degrees

4. greater than 90 degrees

5. measures 180 degrees

6. position in space

7. flat surface

**Step-by-step explanation:**

**Answer:**

your answer is **C) A negative radius does not make sense.**

**Step-by-step explanation:**

hope it helps ^_^

**Answer:**

surface area: 7241.25

**Step-by-step explanation:**

using this formula for surface area of cyclinder: 2πrh+2π

diameter = 2r --> 39.2 = 2r

so r= 19.6

**Answer:**

3.06417777

**Step-by-step explanation:**

cos(40)=x/4