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Nadya [2.5K]
3 years ago
11

Suppose a radioactive substance has a half-life of 1000 years. What fraction will be left after 1000 years?

Mathematics
2 answers:
Nezavi [6.7K]3 years ago
5 0

Answer:

1/2

Step-by-step explanation:

so if u do the waffalineneh times by arcimate it would equivently be the answer on top

salantis [7]3 years ago
3 0

Answer:

\frac{1}{2}

Step-by-step explanation:

The half life is the amount of time it takes a substance to decay to half of its original amount.

Since the radioactive substance has a half life of 1000 years, there will be half of it left after 1000 years.

So, the fraction that will be left after 1000 years is \frac{1}{2}

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Find the area of the shaded region Gh= 13yd
Feliz [49]

Answer:

area ≈ 344. 93 yard²

Step-by-step explanation:

The question you are asking is a circle with shaded portion and a portion not shaded  . The radius of the circle is given as 13 yards . H is the center of the circle and unshaded part of the the sector has an angle of 126°.

The area of a sector = ∅/360 × πr²

The other angle of the shaded  portion is unknown . To find the angle we subtract 126° from 360°(complete angle).

360 - 126 = 234°

area of a sector = ∅/360 × πr²

where

∅ = 234°

r = 13 yards

area =  234/360 × π × 13²

area = 234/360 × π × 169

area = 39546π/360

area = 109.85π

area = 109.85 × 3.14

area  of the shaded part = 344.929  yard²

nearest hundred will be

area ≈ 344. 93 yard²

4 0
3 years ago
Tyler has a baseball bat that weighs 28 ounces. Find this weight in kilograms and in grams.
brilliants [131]

Answer

28 ounces = 793.79 grams

28 ounces = 0.79 kilograms.

Step by step explanation

1 ounce = 28.3495 grams

Now let's convert 28 into grams.

Here we have to multiply 28 by 28.3495

28 x 28.3495 = 793.787 grams

Now let's convert 793.787 into kilograms

1 kilograms = 1000 grams

793.787 grams = 0.79 kilograms


5 0
3 years ago
Read 2 more answers
I know this is stupid but im lazy. <br> What four numbers equal 50.
Dennis_Churaev [7]
12.5 x 4... hope this helped!
7 0
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Is the square root of 13 a rational number or an irrational number?
abruzzese [7]
13 is not a perfect square so it is (irrational)
8 0
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Natalka [10]

Answer:

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7 0
3 years ago
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