Answer:
5 weeks
Step-by-step explanation:
keep on subtracting 40 from 350, until you get to 150, or less, which was 5 times in this case
X could be -1.4835 or -5.5615.
Please mark as brainliest....
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:
$25.5
Step-by-step explanation:
To find 85% of $30, we can simply multiply the usual price, $30, by the decimal form of the percentage.
The decimal form of 85% is .85.
Now, multiply.
30*.85=25.5
The sale price of the backpack is $25.5.
Hope this helps!
Answer:
G(12) = 15
Step-by-step explanation:
When doing g(x) equations, all you do is substitute the value inside the parentheses to x in the equation.
So you get 3/4(12) + 6.
Then simplify to get g(12) = 15
