Answer: (x, -y)
Step-by-step explanation:
Answer:
(-9,3)
Step-by-step explanation:
6x and -6x cancel, leaving us 12y=36 which means y=3. Then we can plug it back into our equations leaving us with x=-9.
Answer:
4.02 meters.
Step-by-step explanation:
In the diagram, the length of the ladder is |AC|.
If the foot of the ladder is x meters from the base of the ladder
Then the distance of the ladder up the wall, AB=2x meters.
Using Pythagoras Theorem

Therefore, the distance of the ladder up the wall,
AB=2 X 2.01 =4.02 meters.
Answer:

And for this case we can use the last equation when we want the altitude and we want to know how many minutes the plane was at air after the takeoff
Step-by-step explanation:
For this case we have the following function given :

Where:
A = feet of a plane and t = minutes after takeoff
And we are interested to solve t in terms of A
We can begin subtracting 2000 in both sides of the equation and we got:

Now we can divide both sides by 7000 and we got:

Now we can apply exponential in both sides of the equation and we got:

And now we can divide both sides by 0.2 and we got:

And for this case we can use the last equation when we want the altitude and we want to know how many minutes the plane was at air after the takeoff