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pav-90 [236]
3 years ago
7

A rectangle has an area of 230.86 square inches. The height of the rectangle is 23.8 inches.

Mathematics
1 answer:
Lynna [10]3 years ago
5 0

Answer:

Step-by-step explanation:

230.86/23.8= and you'll have your answer (I don't have a calculator on me sorry)

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HACTEHA [7]

Answer:

Step-by-step explanation:

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What is (n+2) / -8=-4
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\frac{n +2}{-8} =-4      Multiply -8 on both sides

\frac{n +2}{-8} (-8)=-4(-8)

n + 2 = 32       Subtract 2 on both sides

n + 2 - 2 = 32 - 2

n = 30

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If YV = 28 in, find the length of vyw
max2010maxim [7]

Answer:

I’m sorry I don’t know

Step-by-step explanation:

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3 years ago
The mass of a bacteria culture doubles every four days. If the initial sample is 5mg: a) how much will you have after one week (
maks197457 [2]

Answer:

a) 16.82 mg

b) 24 days

Step-by-step explanation:

Formula for exponential growth is given as:

A=A_0b^{\frac{t}{c}}

Where A is the final population

A_0 is the initial population

b is the growth factor

c is the time taken for the growth 'b'

t is the amount of time

Here, We are given the following:

A_0 = 5 mg

b = 2 (Given because it doubles)

c = 4 days

a) A = ?

Using the formula:

A=5 \times 2^{\frac{7}{4}}\\\Rightarrow A=5 \times 2^{1.75} \\\Rightarrow A = \bold{16.82\ mg}

b) Given

A = 320 mg

t = ?

Using the above formula again:

320 = 5 \times 2^{\frac{t}{4}}\\\Rightarrow \dfrac{320} 5= 2^{\frac{t}{4}}\\\Rightarrow 2^{\frac{t}{4}} = 64\\\Rightarrow 2^{\frac{t}{4}} = 2^6\\\Rightarrow \dfrac{t}{4} = 6\\\Rightarrow t = 6 \times 4\\\Rightarrow \bold{t = 24\ days}

So, the answers are:

a) 16.82 mg

b) 24 days

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Naoya read a book cover to cover in a single session, at a rate of 55pages per hour. After reading for 4 hours, he had 330 pages
tankabanditka [31]

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3 years ago
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