**Answer:**

the correct answer is the option D.

**Answer:**

x=7/8

**Step-by-step explanation:**

3x+5x-7=0

=8x=7

x=7/8

**Answer:**

x = 57.59

**Step-by-step explanation:**

979 * 1 / 17

x = 57.59

cross multiply then divide.

if you want to be thorough and make the equation

17x = 979(1)

x = 57.59

To solve this problem you must apply the proccedure shown below:

1. You have the following information given in the problem above:

The angle is: 90 degrees

radius=6 m

2. 90 degrees is radians:

90°xπ/180°=π/2

3. Therefore, you have the length of the arc is:

=(6 m)(π/2)

=3π

Therefore, **the answer is the option C. C. 3π**

**Answer:**

28

**Step-by-step explanation:**

x=12 and y=3

x=4 and y =1

x=28 and y=7