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3 years ago

The equation y=0.5 . 2* is it an exponential growth or decay ?

Mathematics

1 answer:

Karo-lina-s [1.5K]3 years ago

8 0

Answer:

The answer is exponential growth!

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Multiply 8-2x/5* 45x^3+90^2/10x^2-20x-80

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3 years ago

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Answer:

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Step-by-step explanation:

The y = 0.5 the x = 1

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Pumps A, B, and C operate at their respective constant rates. Pumps A and B, operating simultaneously, can fill a certain tank i

jeka94

Let $a,b,c$ be the time it takes for pumps A, B, and C (respectively) to fill 1 tank. Then

$\begin{cases}\dfrac1a+\dfrac1b=\dfrac1{\frac65}=\dfrac56\\\\\dfrac1a+\dfrac1c=\dfrac1{\frac32}=\dfrac23\\\\\dfrac1b+\dfrac1c=\dfrac12\end{cases}$

Now,

$\left(\dfrac1a+\dfrac1b\right)-\left(\dfrac1a+\dfrac1c\right)=\dfrac56-\dfrac23\implies\dfrac1b-\dfrac1c=\dfrac16$

Then

$\left(\dfrac1b+\dfrac1c\right)+\left(\dfrac1b-\dfrac1c\right)=\dfrac12+\dfrac16\implies\dfrac2b=\dfrac23\implies b=3$

This means

$\dfrac1a+\dfrac13=\dfrac56\implies\dfrac1a=\dfrac12\implies a=2$

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$\dfrac13+\dfrac1c=\dfrac12\implies\dfrac1c=\dfrac16\implies c=6$

Working together, all 3 pumps would operate at a rate of

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or 1 tank in 1 hour, so the answer is D.

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3 years ago

If you have $10, and you money doubles every year, how much money will you have in 10 years?

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Answer:

Year 1: 10

Year 2: 20

Year 3: 40

Year 4: 80

Year 6: 160

Year 7: 320

Year 8: 640

Year 9: 1280

Year 10: 2560

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