Answer: zero
Step-by-step explanation: anything multiplied by zero ALWAYS equals zero.
Recall that
So we have
So either .
Since , we expect , so we take the negative square root. Then
This then means we have
Now it would be
-2.3+(-5.9)
now just add those two together
and u get -8.2
So the answer is A
They biked 120 km
they bussed 80 km
because 120 + 80 = 200 and 120 is 40 more than 80