To start, first distribute 8 to (y+11) which would look something like this:
9y=8y+88
Now, subtract 8y from both sides in order to solve for and isolate the y value. This would result in your answer, y=88.
Answer:
Sam's total is $29.46
Step-by-step explanation:
$9.20 multiplied by the quantity of the DVDs (4), is $36.80.
If you subtract 25% of that, it brings your amount to $27.60.
Add 6.75% for the sales tax, which makes the total amount to $29.46
Given:
A solution of 60% fertilizer is to be mixed with a solution of 21% fertilizer to form 234 liters of a 43% solution.
To find:
The quantity of the 60% solution in the mixture.
Solution:
Let x be the quantity of the 60% solution and y be the quantity of the 21% solution.
Quantity of mixture is 234. So,

...(i)
The mixture has 43% fertilizer. So,

Multiply both sides by 100.
...(ii)
Using (i) and (ii), we get




Divide both sides by -39.


Putting this value in (i), we get


Therefore, 132 liters of the 60% solution must be used.
Given the rate of water flow is given by:
r(t)=85e^(-0.04t)
thus the amount of water flow in the first hour when t=1, will be:
r(1)=85e^(-0.04*1)
=81.667
thus the amount of water that flowed out will be:
85-81.667
=3.333 liters
Answer:
See below ~
Step-by-step explanation:
As the parallelogram and rectangle have the same formula for calculating area : <u>area = base x height</u>, their dimensions will remain the same. Hence, the dimensions are listed for each figure :
<u>Question 1(a)</u>
<u>Question 1(b)</u>
<u>Question 1(c)</u>