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Brilliant_brown [7]
3 years ago
5

The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass

. Starting with 190 grams of a radioactive isotope, how much will be left after 4 half-lives?
Mathematics
1 answer:
Semmy [17]3 years ago
5 0
190*(1/2)^4 = 190/16 = 11.875 . . . grams
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3 years ago
Given 2x² = -8, x is<br>a. -2<br>b. 2<br>c. 2i or -2i<br>d. 4i or -4i
marishachu [46]
Your answer is (a) because 4 times 2 is 8 but since it's negative 2 it's negative 8

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3 years ago
The diagram shows a right angle.<br> Write an equation to determine the value of x. Solve for x.
kramer

Answer:

8x + (6x + 6) = 90°

x = 6°

Step-by-step explanation:

because it is a right angle, the sum of the angles = 90°

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8 0
3 years ago
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Answer:

Write and evaluate the expression. Then, complete the statements.

A 1-column table with 5 rows. Column 1 is labeled Multiplication Words with entries double, multiply, product, twice, times.

Yuna ran three times as many kilometers.

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8 0
2 years ago
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leonid [27]
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Step-by-step explanation:

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So,r=\frac{\pi}{4}

6 0
3 years ago
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