Answer:

14.1

find the square root of 490.9, then divide that by pi to get the radius. lastly multiply by two to get diameter.

**Answer:**

**Step-by-step explanation:**

(x + 4)/2= 3

x + 4 = 6

x = 2

(y - 4)/2= 2

y - 4 = 4

y = 8

(2, 8) the other endpoint

Answer:

C

Step-by-step explanation:

Figure C is correctly and exactly divided into two parts so it's a line of symmetry.

(2 3/4) / (1/2) = x / 1.....2 3/4 miles to 1/2 hr = x miles to 1 hr

(11/4) / (1/2) = x/1

cross multiply

(1/2)(x) = (11/4)(1)

1/2x = 11/4

x = (11/4) / (1/2)

x = 11/4 * 2/1

x = 22/4

x = 5 1/2 <=== she jogged 5 1/2 miles per hr