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oksian1 [2.3K]
3 years ago
9

Simplify the following expression by combining like terms. Then select the

Mathematics
1 answer:
disa [49]3 years ago
8 0

Answer:

216

Step-by-step explanation:

2+30-3+232+8-53

32-3+232+8-53

29+232+8-53

261+8-53

269-53

216

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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

t is the time it takes, in hours

The questions asks HOW LONG it will take to make the remaining medication to 1 milligrams (1 mg)??

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

8 0
3 years ago
What’s is the answer to2(9)+7
AveGali [126]
The answer would be 25

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4 0
4 years ago
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Please help me out :)
Tomtit [17]
(f+g)(x)=5x-6+x^2-4x-8
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5 0
4 years ago
Derrick has $4 to play video games at the mall each game cost a quarter to play. What’s the total number of games he can play
Alborosie
Derrick can play 16 games in total.
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3 years ago
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Camila was out at a restaurant for dinner when the bill came. Her dinner came to $32. After adding in a tip, before tax, she pai
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Answer:

25%

Cause 125%-100%=25%

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