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2 years ago

I need help, please! NO LINKS!

Mathematics

2 answers:

Svetllana [295]2 years ago

8 0

Step-by-step:

4x + 10 = -26

Subtract 10 from both sides

4x = -36

Divide each side by 4

x = -9

To check it, substitute -9 for x in the original equation.

4(-9) + 10 = -26

-36 + 10 = -26

-26 = -26

Liula [17]2 years ago

4 0

Answer:

X=-9

Step-by-step explanation:

4x+10=-26

4x=-26-10

4x=-36

x=-9

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2 years ago

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2 years ago

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Step-by-step explanation:

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2 years ago

Carlos has taken an initial dose of a prescription medication.

Marat540 [252]

Answer:

3.48 hours

Step-by-step explanation:

The equation is:

$M(t)=20 e^{-0.86t}$

Where

M(t) is the amount of medication remaining in mg

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We have to substitute M(t) with "1" and find the corresponding value of "t". We will use natural log to solve this. Shown below:

$M(t)=20e^{-0.86t}\\1=20e^{-0.86t}\\0.05=e^{-0.86t}\\Ln(0.05)=Ln(e^{-0.86t})\\Ln(0.05)=(-0.86t)Ln(e)\\t=\frac{Ln(0.05)}{-0.86}\\t=3.48$

<u>Note: </u> Ln(e) = 1

This means, the amount of time it will take is about 3.48 hours

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3 years ago