Answer:
13.5 minutes (13 minutes and 30 seconds)
Explanation:
In this problem, you are given the rate of which the water drips at which can be used to find the time of any amount of water that has dripped if using a ratio.
Drip rate: 3 min / 1 cup
If we set up a ratio, we can use X for the time it takes to waste 4 1/2 cups of water:
3 min / 1 cup = X min / 4 1/2 cups
Then, cross multiply to solve:
1*X=3*4 1/2
Simplify for the answer:
X= 13 1/2 minutes
(13 minutes and 30 seconds)
28 dollars for eight pounds
The answer is 9 you have to multiply 1/4 three times which gives you 1/64 then you take 576 and multiply it by 1/64 which gives you 9. Hope this helps.
5w + 8 - w = 6w - 2(w -4).
Let's reduce the equation on the left:
4w + 8; (1)
and now let's reduce the equation on the right
6w - 2w +8 = 4w +8 (2).
We notice that (1) ≈ (2), and this is the only IDENTITY
The "no thinking required" way to solve it is using the quadratic formula. That formula tells you the solution to
is given by
Your equation has a=-2, b=3, c=-9, so the solution is
The solutions are complex numbers.
