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If a radioisotope has a half life of 400000 years and only 6.25 percent of the original radioisotope was present in a rock how old is the rock?
Wiki User
∙ 14y ago
after 4 half ives the radioactive material becomes 6.25% so age of the rock is
400000 x 4 = 1600000 years or 1.6 Million years.
Wiki User
∙ 14y ago
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400000 pounds
How many milliliters are in 0.4 liters?
Remember K H D | d c m (kilo, hecto, deka, (liter, meter, gram), deci, centi, milli). Milliliters are three places to the right of liters. So you have to move the decimal place three times to the right. You will get .4 L = 400 mL.
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1% of 400000=4000
What percent is 50000 of 400000?
Expressed as a percentage, 50000/400000 x 100 = 12.5 percent.
What is sales tax of 1.5 percent of 400000?
1.5% of $400,000.00 = 1.5% * 400000 = 0.015 * 400000 = $6,000.00
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1.5% = 0.015 0.015 x 400 000 = 6 000
What 70 percent of 400000?
280,000
What is 2 percent of 400000?
8000
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40000
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(400000) x (1.07)(raised to 15) = (400000) x (2.759) = 1103600
What is 6 percent of 400000 dollars?
24,000
What is 100000 times 400 percent?
400000
What is 20 percent of 20000.00?
400000
