The correct answer is "525613"
In order to find the answer, you can use-
1/4x=6
In order to get the answer, you multiply 6 by the denominator.
6x4=24
Then, you'd divide the solution of that part by the numerator.
24 divided by 1 equals 24.
Therefore, the final answer would be 24.
Solution:
1. Move all terms to one side
<span>25{x}^{2}+40x+16-28=0</span>
2. Simplify <span>25{x}^{2}+40x+16-28 to <span>25<span>x<span><span>2</span><span></span></span></span>+40x</span></span><span><span>−12</span></span>
<span>25{x}^{2}+40x-12=0</span>
3. Apply the Quadratic Formula<span>x=\frac{-40+20\sqrt{7}}{50},\frac{-40-20\sqrt{7}}{50}
</span>
4. Simplify solutions
<span>x=-\frac{2(2-\sqrt{7})}{5},-\frac{2(2+\sqrt{7})}{5}</span>
Done!
let's use engineering notation for the sake of brevity.
1 trillion is 1,000,000,000,000, or just 1E12, twelve zeros.
1 million is then 1E6, six zeros.
we know the discharge for one day is 3E12 gallons, and that'd do just fine for country A for 5 months. How many gallons in 1 month only?
![\bf \begin{array}{ccll} gallons&months\\ \cline{1-2} 3E12&5\\ x&1 \end{array}\implies \cfrac{3E12}{x}=\cfrac{5}{1}\implies 3E12=5x \\\\\\ \cfrac{3E12}{5}=x\implies 6E11=x\implies 600000000000=x](https://tex.z-dn.net/?f=%5Cbf%20%5Cbegin%7Barray%7D%7Bccll%7D%20gallons%26months%5C%5C%20%5Ccline%7B1-2%7D%203E12%265%5C%5C%20x%261%20%5Cend%7Barray%7D%5Cimplies%20%5Ccfrac%7B3E12%7D%7Bx%7D%3D%5Ccfrac%7B5%7D%7B1%7D%5Cimplies%203E12%3D5x%20%5C%5C%5C%5C%5C%5C%20%5Ccfrac%7B3E12%7D%7B5%7D%3Dx%5Cimplies%206E11%3Dx%5Cimplies%20600000000000%3Dx)
if there are 200million inhabitants in A, namely 200E6 or 2E8 inhabitants, how many gallons per inhabitant from all those 6E11 gallons?
![\bf \begin{array}{ccll} gallons&households\\ \cline{1-2} 6E11&2E8\\ x&1 \end{array}\implies \cfrac{6E11}{x}=\cfrac{2E8}{1}\implies 6E11=2E8x \\\\\\ \cfrac{6E11}{2E8}=x\implies \cfrac{600000000000}{200000000}=x\implies 3000=x](https://tex.z-dn.net/?f=%5Cbf%20%5Cbegin%7Barray%7D%7Bccll%7D%20gallons%26households%5C%5C%20%5Ccline%7B1-2%7D%206E11%262E8%5C%5C%20x%261%20%5Cend%7Barray%7D%5Cimplies%20%5Ccfrac%7B6E11%7D%7Bx%7D%3D%5Ccfrac%7B2E8%7D%7B1%7D%5Cimplies%206E11%3D2E8x%20%5C%5C%5C%5C%5C%5C%20%5Ccfrac%7B6E11%7D%7B2E8%7D%3Dx%5Cimplies%20%5Ccfrac%7B600000000000%7D%7B200000000%7D%3Dx%5Cimplies%203000%3Dx)
Do 72 divided by 7 to get your answer