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balandron [24]
3 years ago
6

Radium-226, a common isotope of radium, has a half-life of 1,620 years. How many grams of a 120-gram sample will remain after t

years?
Mathematics
2 answers:
Elina [12.6K]3 years ago
8 0

For the first part it’s A

For the second part it’s 115 years

ankoles [38]3 years ago
4 0

Answer:

P(t)=120(1/2)^t/1620

Step-by-step explanation:

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Furkat [3]

Answer:

There are as many definitions of empire as there have been empires, but some pretty familiar elements appear in most of them. It starts with working on our “control issues”.

3 0
3 years ago
Solve for x: 4 over 5 x + 4 over 3 = 2x x = __________________ Write your answer as a fraction in simplest form. Use the "/" sym
Vesna [10]
4/5x + 4/3 = 2x....there are 2 ways to do this...one with fractions, one without.

with :
4/5x + 4/3 = 2x
4/3 = 2x - 4/5x
4/3 = 10/5x - 4/5x
4/3 = 6/5x
4/3 * 5/6 = x
20/18 = x
10/9 = x

without :
4/5x + 4/3 = 2x....multiply by common denominator of 15
12x + 20 = 30x
20 = 30x - 12x
20 = 18x
20/18 = x
10/9 = x
5 0
3 years ago
Read 2 more answers
I need all help possible.
Leviafan [203]
So there are 52 horses
12 of them are white
how many are black?
52 - 12 = 40
there are 40 black horses
12 white horses to 40 black horses
12:40 
12/40

Hope this helps :)
5 0
3 years ago
Help me with this pls
Rufina [12.5K]

Answer:

b^-6

Step-by-step explanation:

(b^-2) / (b^4) = b^(-2 - 4)

3 0
3 years ago
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Suppose an isosceles triangle ABC has A= pi/6 and b=5=c. What is the length of a^2.
Oliga [24]
Check the picture below.

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3 years ago
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