Answer:
Step-by-step explanation:
i didnt exactly answer this but i found someone who did
(pasted) i still hope it helps
Let x and (40L-x) represent the 20% and 4% solutions respectively
Mixing the 20% and 1% to form 40L of 15% solution
.20x + .04(40L-x) = .15*40L
.16x = .11*40L
x = .11*40L/.16
x = 27.5L, the amount of the 20% solution.
12.5L,the amount of the 4% solution (40L - 27.5L)
CHECKING our Answer
.20*27.5L + .04*12.5L = 5.5L + .5L = 6L = .15*40L
Which tells us incidentally there is 6L of disinfectant in the final solution.
We know that
[area of <span>Martha's bathroom]=5*7-----> 35 ft</span>²
[area of one tiles]=(1/4)²-----> 1/16 ft²
if 1 tile has area of--------------> 1/16 ft²
x tiles---------------------------> 35 ft²
x=35/(1/16)-----> x=35*16-----> x=560 tiles
the answer is
560 tiles
Answer:
N<5
Step-by-step explanation:
-4(3+n) > -32
-4(n+3) > -32
-(4n + 4 x 3) > -32
-(4n + 12) > -32
(-4n - 12) +12 > -32 + 12
-4n - 12 + 12 > -20
-4n > -20
4n/4 < 20/4
n < 2² x 5/ 2²
n<5
very interesting
the equation we are given is for when the units of t are in years
I do know that you want to have the variable as time, but I'm not sure if you want it in years or months
I will solve for in months because that makes more sense
in that case, it will be 2250(1+r)^m where r=monthly interest rate and m=time in months
to compare, we can do
when 1 year has elapsed, t=1 and m=12
and the amount earned should be the same
so therfor we can say
divide both sides by 2250 to make it easier
take 12th root of both sides
![\sqrt[12]{1.17}=1+r](https://tex.z-dn.net/?f=%5Csqrt%5B12%5D%7B1.17%7D%3D1%2Br)
minus 1 both sides
![-1+\sqrt[12]{1.17}=r](https://tex.z-dn.net/?f=-1%2B%5Csqrt%5B12%5D%7B1.17%7D%3Dr)
using a calculator
-1+1.01316961=r
<span>0.01316961=r</span>
<span>not sure if yu want percent to thousandth or decimal to thousandth</span>
<span>if decimal then 0.013 is interest rate</span>
<span>if percent then it is 1.317% interest rate</span>
