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1. ### How to solve diff eq without knowing integrals?

You don't need to know integrals to show that's a solution. Consider this: IF P(t) = L/[1 + Ce^(-kLt)], then dP/dt = -L/[1 + Ce^(-kLt)]^2 * [-CkLe^(-kLt)] = CkL^2 e^(-kLt) / [1...

3 Answers · Science & Mathematics · 14/02/2019

2. ### How to solve this differential eq problem?

...the DE as (1/L) * ( 1/P + 1/(L-P) ) dP = k dt. Now the calculuse part: integrate both sides. Then once more...

1 Answers · Science & Mathematics · 14/02/2019

3. ### Not sure what to do to show my work for this probability question?

Use the binomial probability formula. P(X = k) = C(n, k) * p^k * q^(n - k) n : number of trials (35) k : number...

1 Answers · Science & Mathematics · 05/02/2019

4. ### Find intersection?

Point C is on line 2, but a line has no starting (or... best guess is that you need to know the value of k. That might be possible after you have worked out some consistent...

1 Answers · Science & Mathematics · 03/02/2019

5. ### If one of the roots of the equation x² - Kx+27=0 is the square root of the other, find the other root and hence the value of K.?

ax² + bx + c = 0 the roots ... m ....√m the product of the roots = c/a m*√m = 27 m^3/2 = 27 m = 9 and m' = 3 the sum of the roots = -b/a 9 + 3 = k k = 12

4 Answers · Science & Mathematics · 25/01/2019

6. ### A laptop computer that costs \$1075 new has a book value of \$500 after 2 years.?

...and f(t) = ae^(kt) And asked to find variables m, b, a, and k that will fit both points in both equations. So starting...

5 Answers · Science & Mathematics · 01/01/2019

... to Z/(2nZ) given by R_kk.) So H is a subgroup of D_(2n... is normal in D_(2n). B) (a) {ce} = {c} = {ec} shows that left and right cosets are...

1 Answers · Science & Mathematics · 30/11/2018

8. ### Find Foci and vertices of the ellipse I)9(x-3)^2+5(y+5)^2=45 2)9(x+4)^2+13(y-1)^2=117?

...h , k+b) Foci i / if a>b --->c = √( a^2 - b^2) then F(h-c, k) and F(h+c, k) ii/ if b>a --->c = √( b^2 - a^2) then F(h...

1 Answers · Science & Mathematics · 27/11/2018

9. ### Math Question..?

One way would be to remember the rules like: - a number divisible by 2 ends in 0, 2, 4, 6 or 8. - a number divisible by 3 has digits that add up to a multiple of 3. - a number divisible by 4 has the last two digits divisible by 4. - a number...

1 Answers · Science & Mathematics · 22/11/2018

10. ### If three doctors cure seven patients in five minutes, how long would it take for four doctors to cure three patients?

...it take 4 engineers to build 3 sheds". C = kDT k = C/(DT) = 7/(3*5) = 7/15 (Cures per Doctor per Minute...

4 Answers · Science & Mathematics · 27/10/2018