A^2 + b^2 = c^2
324 + 6400 = c^2
6,724 = c^2
c = 82
82 cm.
Ok so,
20*2= 40
20*1/2=10
40+10=50
So Johncan travel 50 km in 2 1/2 hours.
Hope this helps :)
Answer:
It would be constant.
Step-by-step explanation:
Since there is no x value, the line will have no slope and just be horizontal about y= -2.
We have the following expression

This is equivalent to

Since

we have that

Therefore, the answer is the second option from top to bottom.