Question

Sonya and Isaac are in motorboats located at the center of a lake. At time t=0, Sonya begins traveling south at a speed of 36 mph. At the same time, Isaac takes off, heading east at a speed of 27mph. How fast is the distance between them changing after 12 minutes?

Answer 1

Answer:

the speed btn sonya and issac would make a right angled trangle hence easy 2 solve through pythogoras

${36}^{2} + {27}^{2} = 2025$

then find the

$\sqrt[?]{?}$

hence get 45

since it was 12 mins we need 2 multiply by 12

hence

$45 \times 12 = 540$

Therefore it's 540mph