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Anna007 [38]
3 years ago
15

Please help thank u

Mathematics
1 answer:
ad-work [718]3 years ago
5 0

Answer:

12

Step-by-step explanation:

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4. Find the value of n that makes this equation true. (Use
andreyandreev [35.5K]

Answer:

n=4

Step-by-step explanation:

We start off with 3.2n + 13.3 = 26.1.

We need to get n by itself.

Subtract 13.3 from both sides.

3.2n+13.3-13.3=26.1-13.3

26.1-13.3=12.8

We end up with: 3.2n=12.8

Divide 3.2 on both sides to get n by itself.

\frac{3.2n}{3.2} =\frac{12.8}{3.2}\\ n=4

7 0
3 years ago
a 34 gram sample of a substance that's used to treat thyroid disorders has a k-value of 0.137. find the substance's half-life, i
Ira Lisetskai [31]

Answer:

5.1 days

Step-by-step explanation:

Given in the question,

initial amount of substance = 34 grams

k-value = 0.137

To find the half life of this substance we will use following formula

N(0)/2 = N(0)e^{-kt}

here N(0) is initial amount of substance

        t is time in days

Plug values in the formula

34 /2 = 34e^{-0.137t}

1/2 = e^{-0.137t}

Take logarithm on both sides

ln(1/2) = ln( e^{-0.137t})

ln(1/2) = -0.137t

t = ln(1/2) / -0.137

t = 5.059

t ≈ 5.1 days (nearest to tenths)

3 0
3 years ago
A farmer has 24 bushels of apples and can harvest 22 bushels of apples each day?
sweet-ann [11.9K]

Answer:

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5 0
2 years ago
Three less than one-half a number is –71.
german

Answer: -136

Step-by-step explanation:

1/2(x)-3=-71

-68=1/2x

-136=x

*edited* I believe this is correct

8 0
3 years ago
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She can make 2 batches.
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