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Setler79 [48]
3 years ago
12

What fraction of a given sample of radioactive nuclide remains after four half lives?

Mathematics
2 answers:
horsena [70]3 years ago
7 0
<span>1 half-life: 1/2 left 

2: half of that, or 1/4 

3: half of that, or 1/8 

4: half of that, or 1/16 

. (1/2)^4 = 1/16
so</span><span>after four half lives it would be 1/16
so correct option is D
</span>
Black_prince [1.1K]3 years ago
5 0
I believe the answer is D. 1/16.
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disa [49]

Answer:

5x8 = 40

base x height = area

7x10 = 70

70-40 = 30

Step-by-step explanation:

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Which of the following are techniques you have learned so far for solving a quadratic equation?
matrenka [14]
I THINK IS slove by factoring BUT I'M NOT SURE
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Is here something wrong with me?
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There is nothing wrong with you. Everyone ad their ups and downs

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3 0
3 years ago
How do I solve this? (please help to find what goes in the boxes as well)
natta225 [31]

Answer:

First Box: Factor by difference of squares

Second Box: It has all perfect squares

Third Box: see my work

Step-by-step explanation:

We have the equation 4x^2=36

Before we do anything, let us bring all of the terms to the left side

4x^2-36=0

Now that we have moved the terms to one side, it is clear that we have a difference of squares.

-Work-

4x^2=36\\\\4x^2-36=0\\\\(2x+6)(2x-6)=0\\\\

-

2x+6=0\\\\2x=-6\\\\x=-3

-

2x-6=0\\\\2x=6\\\\x=3

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2 years ago
In a school annual Day 60 students involved is Science Exhibition, 75 involved in Mathematics Exhibition, 20 involved in both Ex
pshichka [43]

Answer:

440 man its so easy just add up all the numbers

Step-by-step explanation:

440

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