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oee [108]
3 years ago
15

Element X is a radioactive isotope such that every 3 years, its mass decreases by half. Given that the initial mass of a sample

of Element X is 410 grams, how much of the element would remain after 10 years, to the nearest whole number?
Mathematics
1 answer:
Volgvan3 years ago
5 0

Answer:Y=41

Step-by-step explanation:

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What is the measure of x
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2 years ago
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according to the 2000 U.S. Census, 138,053,563 Americans are male, and 143,368,343 Americans are female. About what percent of f
Novosadov [1.4K]

Givens

Male  =      138,053,563

Female =   143,368,343

Total

The total equals 281 421 906

Percents

Male = (138,053,563 / 281 421 906) * 100 = 49.1%

Female = ( 143,368,343/ 281 421 906) * 100 =  50.94%

Rounded

Male =  49

Female = 51

Comment.

To find this %s you could just use the first 3 digits of everything.

Total = 138 + 143 = 281

% male = (138/281) = 49.1

% female = (143/281) * 100 = 50.88

These give you the same answers when rounding.

8 0
4 years ago
A refrigerator is priced at 525.50 there is a 7% sales tax rate
Evgesh-ka [11]

Answer:

562.29

Step-by-step explanation:

you would just multiply 525.50 by 7 which is 3678.5 and divide that by 100 which is 36.785 and add that to 525.50 which is 562.285 which can be rounded to 562.29

6 0
4 years ago
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