4 * -1 * 3 + 2 = -10
Sorry if I didn't do this right!
Answer:
1-(n+6) (n+6)-1
Step-by-step
i just got it right on study island
Answer:
yes
Step-by-step explanation:
The standard form of a circle is:
Your center is 
and your radius is 
Plug them into the equation and you get
The correct answer is D.
Basically, Justin and Tina's paths form two right-angled triangles whose hypotenuses(?) form a straight line between their end points. Therefore we need to find the two distances from the starting point and add them.
Justin walked 3 miles north and 6 miles west so his distance from the start is the square root of 9+36 or 45. This can be simplified to 3√5.
Tina walked 2 miles south and 4 miles east so her distance from the starting point is the square root of 4 + 16 or 20. This can be written as 2√5.
If we add these two distances together we get 5√5. Hence, Justin and Tina are 5√5 miles away from each other.
