Answer:
My explanation -->
Step-by-step explanation:
Go over to the left on the -4 and up 5 times and mark a dot on it.
Next, go up half a mark from 0 and put a dot there.
Then, go over to the left between the -2 and -4 and go up 5 times.
Lastly, from the 0, go down half way until the next horizontal line and place a dot there.
use midpoint equation
radius = distance between midpoint and one of the endpoints.
midpoint: (3+5)/2, (2+6)/2, (5+7)/2 = (4,4,6)
equation of sphere: (x-4)^2 + (y-4)^2 + (z-6)^2 = r^2
square distance between midpoint and one of the endpoints.
r^2 = 6
Equation: (x-4)^2 + (y-4)^2 + (z-6)^2 = 6
First, you do 18 miles times 3 hours.
The answer is 54
The you do 15 miles time 2 hours
The answer is 30
You can add them all up and get 84 miles total. (D)
<u>Weight : </u>
<em>⇒ x for 6 people</em>
<em>⇒ y for the 7th person</em>
<u>The correct answer is B).</u>
The answer for this equation is 540!