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Maslowich
2 years ago
14

Element X is a radioactive isotope such that every 66 years, its mass decreases by half. Given that the initial mass of a sample

of Element X is 240 grams, how much of the element would remain after 29 years, to the nearest whole number?
Mathematics
2 answers:
Vlada [557]2 years ago
8 0

Answer:

177 grams

Step-by-step explanation:

Stels [109]2 years ago
5 0

Answer:

53grams... Approximated

Step-by-step explanation:

In 66 years = 240/2 = 120 grams

In 1 year = 120/66 gram

In 29 years = 120/66 × 29 = 52.73grams

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Step-by-step explanation:

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9, 14, 7, 9, 3, 12, 5,4
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Answer:

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Step-by-step explanation:

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2 years ago
Write this relationship as a ratio, with kilograms as units. 300 g to 5 kg. (Express your answer using a colon. Leave spaces bet
Bad White [126]

Answer:

0.3 kg : 5 kg

Step-by-step explanation:

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8 0
3 years ago
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The formula for velocity of an object is the equals d over t where he is a velocity of the object t is the distance traveled and
butalik [34]

Answer:

(a)\ t =\frac{d}{v}

(b)\ d = vt

Step-by-step explanation:

<em>The question is mixed up with details of another question. See comment for original question</em>

<em />

<u>Given</u>

v = \frac{d}{t}

v \to velocity

d \to distance

t \to time

Solving (a): Solve for time

We have:

v = \frac{d}{t}

Cross multiply

t * v = d

Make t the subject

t =\frac{d}{v}

Solving (b): Solve for distance

We have:

v = \frac{d}{t}

Cross multiply

d = v * t

d = vt

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3 years ago
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