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3 years ago

Find the measure of the nlissing angle. 220 a

Mathematics

1 answer:

Goryan [66]3 years ago

8 0

Answer:

a phylogenetically controlled comparative approach to determine whether the ... selected five points for each cardboard model, and measured the reflectance ... subtend a small visual angle and chromatic vision when a large one ... Experimental Biology, 220, 1975. https

Step-by-step explanation:

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What is the 1000positive integer with an odd number of digits?

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3 years ago

If sin(x) = 0.4, then what is tax (x)?

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Answer:

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Step-by-step explanation:

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3 years ago

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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

6 0

4 years ago