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defon
2 years ago
13

Approximately how long does it take a sample of francium-223 to decay by 50%?

Mathematics
1 answer:
valentina_108 [34]2 years ago
6 0
B. 100 minutes correct me if i’m wrong
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3 years ago
A regulation basketball has a diameter of about 9 in. What is the best approximation for the volume of this ball? 3050 in³ 382 i
Mandarinka [93]

The best apporximation for the volume of this ball is 382 cubic inches.

<h3>What is the volume of the ball?</h3>

The volume of the ball is calculated by the formula V = 4 / 3πr³. This formula is the same in the whole world.

Given

A regulation basketball has a diameter of about 9 in.

The radius of the ball is;

\rm Radius = \dfrac{Diameter}{2}\\\\Radius=\dfrac{9}{2}\\\\Radius=4.5\ inches

The volume of the ball is;

\rm Volume =\dfrac{4}{3}\pi r^3\\\\Volume=\dfrac{4}{3} \times 3.14 \times 4.5^3\\\\Volume =\dfrac{144.53}{3}\\\\Volume = 381.51\\\\Volume = 382 \ In^3 \ apporx

Hence, the best apporximation for the volume of this ball is 382 cubic inches.

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brainly.com/question/10647788

4 0
3 years ago
30 POINTS + BRAINLIEST TO FIRST CORRECT ANSWER!
Vinvika [58]

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The length will be multiplied by 2.

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The square of a number is equal to two less than three times the number. What are two possible values of the number?
ycow [4]

Answer:

A, 1,2

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n = 1

so n can be 1 or 2

4 0
3 years ago
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