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Vinil7 [7]
2 years ago
7

the average human heart beats 1.15•10^5 times per day. there are 3.65•10^2 days in one year. how many times does the heart beat

in one year
Mathematics
2 answers:
Crazy boy [7]2 years ago
4 0

Let b/day = beats per day

Let d/yr = days per year

Let b/yr = beats per year

(1.15e5b/day)(365d/yr)=41,975,000b/yr

Soloha48 [4]2 years ago
4 0

Answer:   4.2\cdot10^{7} times

Step-by-step explanation:

Given: The average human heart beats in one day=1.15\cdot10^5 times

The number of days in one year =3.65\cdot10^2

Now, the number of times does the heart beat in one year is given by :-

1.15\cdot10^5\cdot3.65\cdot10^2\\\\=1.15\times3.65\times10^{5+2}......[\text{Since }a^m\cdot a^n=a^{m+n}]\\\\=4.1975\cdot10^{7}\approx4.2\times10^7

Hence, the heart beat 4.2\cdot10^{7} times in one year.

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First find the difference in price= $8-$6 = $2

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Percentage decrease= (difference in price/ original price) *100

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Percentage decrease=25%

                                                   

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The correct option is (C)

<h3>What is Unitary method?</h3>

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value

Given:

There are 61 new Ford Transits.

If each Ford Transit costs Leonard $8,532.

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=8532*61

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Hence, Leonard total purchase is $520,452.

Learn more about this concept here:

brainly.com/question/15591124

#SPJ1

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