The distance x that it swims is directly proportional to the time t that it swims at a constant speed v:
X=vt
V= 69miles/hour
X=69t, with t in hours, x in miles
It has to be the third option 8(1+6) because 8+48= 56 and 8(1+6)= 56
You have to change the sign of the imaginary part. Which is -4i. 4+4i is the opposite of 4-4i.
Yes. 116° is your answer.
These polygons are <em>similar</em>, meaning that while their side measurements are not the same (but are ratioed), the measurements of the angles are still the same measurements.
hope this helps