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ira [324]
2 years ago
8

Help rn please!! Urgent

Mathematics
1 answer:
Aleks04 [339]2 years ago
8 0

Answer:

<em>x² + 2x - 15 = 0 </em>

Step-by-step explanation:

- 5 and 3 are zeros of quadratic function.

(x + 5)(x - 3) = 0

<em>x² + 2x - 15 = 0</em>

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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

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
Question is in picture
stiv31 [10]

Answer:

27.5

Step-by-step explanation:

pythagorean theorem. a^2+b^2=c^2.

so 12^2+b^2=30^2

meaning 144+b^2=900

900-144=756

square root 756

b=27.5

5 0
3 years ago
Write 6 times x to the five eighths power in radical form.
Tanzania [10]

Answer: D- 6 times the eighth root of x to the fifth power.

Step-by-step explanation:

Bring denominator e as the small number in front of root.

Bring x into the root and the numerator as the power x is raised too.

Have it all times 6.

3 0
3 years ago
Read 2 more answers
PLEASE HELP IM STUCK. <br><br> List the factors of the third term: 6n^3-n^2+5n/8-11
mafiozo [28]

Answer:

The factors for 5 are going to be 1 and 5 or their negative counterparts, since no other whole number within the range of 5 can be multiplied to get 5.

Make sense?

5 0
3 years ago
Please help :(<br> find b
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Answer:

10 billion im very smart

Step-by-step explanation:

8 0
2 years ago
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