Hey there! Hello!
The easiest way to solve this problem is by subtracting one value from the other. In order to find how much weight Emily gained in two months, we need to find the difference between her initial weight and how much she weighed at the end of two months:

You can see that I added a zero onto the end of the 8.2. This just evens out the amount of numbers and makes the problem easier to visualize while keeping the amount the same.
From the result of the problem, Emily gained 1.95 pounds in two months.
I hope this helped you out! Feel free to ask me any additional questions if you have any. :-)
Answer:
Pipe 1 twice as fast as pipe 2.
(Pipe 1 time * Pipe 2 time) / (Pipe 1 time + Pipe 2 time) = combined time
(x * (x/2)) / (x + x/2) = 10
(x^2/2) / 1.5 x = 10
x^2 / 2 = 15 x
x^2 /2 - 15 x = 0
x = 30 (slow pipe)
x/2 = 15 (fast pipe)
So it would take 30 hours using the slow pipe only.
Step-by-step explanation:
Error
<span>6 x = - 2 (5)
should be
</span><span>2 x = - 18 (5)
answer
</span><span>D.
Line 5</span>
Answer:
<em>Final velocity, v = 21.75 m/s</em>
Step-by-step explanation:
Given that the relation between final velocity, initial velocity, acceleration and distance traveled is expressed as:

Also, given that:
Initial velocity, u = 9 m/s
Acceleration, a = 7 m/
Distance, s = 28 m
To find:
Final velocity, v = ?
Solution:
The given relation between v, u, a and s is:

We have the values of initial velocity, acceleration and distance traveled in the question statement. We just need to put all these values to find the value of final velocity.
Let us put all the values in the given equation and try to find final velocity, v:

So, the answer is:
<em>final velocity, v = 21.75 m/s</em>