3 years ago

When you are doing math homework do u need to show your work for every problem?

Mathematics

2 answers:

Alex17521 [72]3 years ago

6 0

Yes, it is very important otherwise some teachers may count the problem wrong.

Y_Kistochka [10]3 years ago

3 0

If the question is only fill in the blank kind, then, no.
But for the word problems and calculation questions, you usually need to show your work. hope that helps :)

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Answer:

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3 years ago

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julia-pushkina [17]

Answer:

V = 929.7

Step-by-step explanation:

Given the equation:

$\frac{dCA}{dV}$ = $\frac{-kCA}{V0}$

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$\int\limits {\frac{dCA}{dV} }$ = $\int\limits{\frac{-kCA}{V0} }$

Re-organizing the integrals:

$\int\limits {\frac{dCA}{CA} }$ = $\int\limits {\frac{-kdV}{V0} }$

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ln(CA) - ln(CA0) = $\frac{-kV}{V0}$

Inputting the initial conditions of CA and the values of k and V0:

ln(7) - ln(100) = $\frac{-0.02V}{7}$

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-2.659 = -0.00286V

=> V = $\frac{2.659}{0.00286}$

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mr_godi [17]

Hahah it’s funny how there was another one of these in my feed after I just answer on the other one. HAVE A NICE DAY :)

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