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3 years ago

What is 70% as a decimal

Mathematics

2 answers:

Anna35 [415]3 years ago

8 0

Answer:

.70

Step-by-step explanation:

Always move 2 places to the left when you are converting a percent into a decimal.

Yakvenalex [24]3 years ago

3 0

Answer:

0.7

Step-by-step explanation:

To make a decimal a percentage you have to multiply by 100. So if you do the opposite, (make the percentage a decimal) you divide by 100

So, 70÷100= 0.7

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The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per da

andriy [413]

Answer:

$4.1975\cdot 10^{7}$

Step-by-step explanation:

We are told that the average human heart beats $1.15\cdot 10^{5}$ times per day and there are $3.65\cdot 10^{2}$ days in one year.

To find number of heart beats in one year we will multiply number of heart beats in one day by number of days in one year.

$1.15\cdot 10^{5}\times 3.65\cdot 10^{2}$

Now we will solve this problem using exponent properties.

$1.15 \times 3.65\cdot 10^{2+5}$

$1.15 \times 3.65\cdot 10^{7}$

$4.1975\cdot 10^{7}$

Our answer is in scientific notation we can represent it in standard form as $4.1975\cdot 10^{7}=4.1975*10000000=41975000$ times.

Therefore, average human heart beats in one year $4.1975\cdot 10^{7}$ or 41975000 times.

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