It took him 2.6 hours to reach the top
Data;
Let us calculate the speed during uphill and downhill
Since the time it took them to descend is twice the time it took them to ascend,
From the calculation above, it took him 2.6 hours to reach the top.
Learn more on speed here;
Answer:
The answer is and
Step-by-step explanation:
Given:
-4x-2y=14
-10x+7y=-24
Now, to solve it by elimination:
......(1)
......(2)
So, we multiply the equation (1) by 7 we get:
And, we multiply the equation (2) by 2 we get:
Now, adding both the new equations:
<em>Dividing both the sides by -8 we get:</em>
Now, putting the value of in equation (1):
<em>Subtracting both sides by 25 we get:</em>
<em>Dividing both sides by -2 we get:</em>
Therefore, the answer is and
