Answer:
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
A secant is a line that goes through a circle at two points.
Total = 36oz
Amount of 18% solution = x
Amount of 9% solution = 36 - x
Using the fact that (amount of solution) * (percent HCl) = amount HCl we can set up an expression for the amount HCl in a mixture of 18% and 9% solutions with a total volume of 36oz.
Amount of HCl = x*0.18 + (36 - x)*0.09
If we divide this by the amount of solution we get percent HCl, and we have a target of 10% HCl. Now we have an equation to solve,
[x*0.18 + (36 - x)*0.09]/36 = 0.1
x*0.09 + 3.24 = 3.6
.09x = 0.36
x = 4
Therefore,
4 ounces of 18% HCl solution and 32 ounces of 9% HCl solution
Check:
[(4*.18) + (.09*32)]/36 = 0.1?
0.1 = 0.1 Yes.
Answer: 6π
<u>Step-by-step explanation:</u>
Area of a circle is π r².
Area of a section of a circle is π r² × the section of the circle.
Given: r = 6, Ф = 60°
Total amount needed for the video game = $200
Total amount of money saved = $68
Amount of money that is needed to be saved = 200-68 =132
So raj needs to work additional hours in order to earn the remaineder$132 for the video game
Hourly wage = $5.5
So, number of hours that Raj needs to work to earn $132 = $132/5.5 = 24 hours
Number of hours that Raj needs to work to earn the remainder of the money = 24 hours
