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Kay [80]
3 years ago
15

How many atoms will there most likely be at the third half-life of potassium-40 in this model?

Mathematics
2 answers:
lions [1.4K]3 years ago
6 0

Answer:

it's 13

Step-by-step explanation:

I just took it

oee [108]3 years ago
4 0

Answer to both is 13 and 1.3 billion years old.

I just completed the assignment, sorry if this is late. but I hope it helps

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Annabelle and Navene are multiplying (4275)(4372). Annabelle's Work Navene's Work (4275)(4372) = 42 + 375 + 2 = 4577 (4275)(4372
natta225 [31]

Neither are correct.

Navene has broken the problem up and simply added numbers together to get "4577"

Annabelle is also wrong because whereas she multiplied, she also broke up the numbers in the equation to get "46710"

The answer should be 18,690,300

7 1
3 years ago
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Which system of equations has the same solution as the one above ?
Ber [7]

Answer:

x+4y=-35

-8x-4y=28

Step-by-step explanation:

The answer to the original equations is (1, -9). You can solve that by using substitution by moving the 4y over and substituting that equation for x on the second part of the top equation. Using elimination, the second set of answers will give you the same, (1, -9)!

7 0
3 years ago
What are the values of a, and r of the geometric series?
Charra [1.4K]
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7 0
2 years ago
PLEASE HELP PLEASE
GarryVolchara [31]

The x-coordinate in the solution of the system of equations  y = -2/3x and 4x - 9y = -40 is -4

<h3><u>Solution:</u></h3>

<em><u>Given that system of equations are:</u></em>

y = \frac{-2}{3}x  ------- eqn 1

4x - 9y=-40 ------ eqn 2

We have to solve the above given system of equations and find the x - coordinate

<em><u>Substitute eqn 1 in eqn 2 and solve for "x"</u></em>

4x - 9(\frac{-2}{3}x) = -40\\\\4x + \frac{18x}{3} = -40\\\\12x + 18x = -120\\\\30x = -120\\\\x = \frac{-120}{30} = -4

x = -4

Thus the x-coordinate in the solution of the system of equations is -4

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4 years ago
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