2 years ago

Please help answer all of the following multi-step equations correctly

Mathematics

1 answer:

Pie2 years ago

3 0

Thats 1 and 2 , im not sure on 2 and i cannot do 3. For 3 a math program said 5

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Answer:

I think the answer is B

can you also please mark me as brainliest

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4 years ago

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Given the relationship x2 + 3y2 =12, with y > 0 and dx, dt = 2 units/min., find the value of dy, dt at the instant y = 1 unit

matrenka [14]

$\bf x^2+3y^2=12\implies \stackrel{chain~rule}{2x\cfrac{dx}{dt}}+3 \stackrel{chain~rule}{\left(2y\cfrac{dy}{dt}\right)}=0
\\\\\\
2x\cfrac{dx}{dt}+6y\cfrac{dy}{dt}=0
\implies 
6y\cfrac{dy}{dt}=-2x\cfrac{dx}{dt}\implies \cfrac{dy}{dt}=\cfrac{-2x\frac{dx}{dt}}{
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\\\\\\
\boxed{\cfrac{dy}{dt}=-\cfrac{x\frac{dx}{dt}}{3y}}\\\\
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$\bf \textit{now, when y = 1, what is \underline{x}?}\qquad x^2+3y^2=12\implies x^2+3(1)^2=12
\\\\\\
x^2=9\implies x=\sqrt{9}\implies x=3\\\\
-------------------------------\\\\
\begin{cases}
y=1\\
x=3\\
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3 years ago

WILL SOMEONE PLZ HELP ME!! I'VE ASKED LIKE 5 TIMES NOW!!! Approximately how long will it take you to double your savings of $500

USPshnik [31]

Answer:

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nadya68 [22]

Here is what the answer to your question is:
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soldier1979 [14.2K]

Answer:

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Step-by-step explanation:

This line contains the letter "M"

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