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3 years ago

( 2-Part Question.)

Mathematics

2 answers:

swat323 years ago

8 0

3x=40.20.... Each book costed $13.40

lys-0071 [83]3 years ago

7 0

B= $40.20/3
The cost of one book is $13.40

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The body of a person who weighs 50 kilograms contains around 2 × 102 grams of sodium chloride. How much sodium chloride is conta

kondaur [170]

The mass of sodium chloride required for 1. 8 × 10^3 people is 3. 6 × 10^5 grams. Option A is the correct answer.

<h3>How do you calculate the mass of sodium chloride required?</h3>

Given that weigh of the person is 50 KG. The mass of the sodium chloride in one person is given below.

$1 \;\rm Person = 2\times 10^2\;\rm g$

The mass of sodium chloride is calculated as given below.

$1.8\times 10^3 \;\rm Person = 2\times 10^2 \times 1.8\times 10^3$

$1.8\times 10^3 \;\rm Person = 3.6\times 10^5\;\rm g$

Hence we can conclude that the mass of sodium chloride required for 1. 8 × 10^3 people is 3. 6 × 10^5 grams. Option A is the correct answer.

To know more about the mass, follow the link given below.

brainly.com/question/15959704.

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2 years ago

Earth is approximately 4.54 * 10^9 years old. Humans are thought to have evolved around 2.5 * 10^5 years ago.

kondaur [170]

Answer:

5.507*10^-7%

Step-by-step explanation:

(2.5 * 10^5)/(4.54 * 10^9)*1/100 %= 5.507*10^-7%

6 0

2 years ago

A growth medium is inoculated with 1,000 bacteria, which grow at a rate of 15% each day. What is the population of the culture 6

ddd [48]

Answer:

The population of bacteria after 6 days is 2,313.06

Step-by-step explanation:

Given as :

The initial population of bacteria = i = 1,000 bacteria

The growth rate of bacteria per day = 15%

Let The population of bacteria after 6 days = f

The time period of growth = 6 days

<u>Now, According to question</u>

The population of bacteria after 6 days = initial population × $(1+\dfrac{\textrm rate}{100})^{\textrm time}$

Or, f = i × $(1+\dfrac{\textrm r}{100})^{\textrm t}$

Or, f = 1000 × $(1+\dfrac{\textrm 15}{100})^{\textrm 6}$

Or, f = 1000 × $(1.15)^{6}$

Or, f = 1000 × 2.31306

∴ f = 2,313.06

So,The population of bacteria after 6 days = f = 2,313.06

Hence,The population of bacteria after 6 days is 2,313.06 Answer

3 0

3 years ago

Rewrite 2x2x2 using an exponent.

Nastasia [14]

Answer:

2³

Step-by-step explanation:

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6 0

2 years ago

Is this right? Please help me

Alecsey [184]

A. 30% is the correct. .30 is 30%

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3 years ago