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Kruka [31]
3 years ago
15

Round to the nearest 100 5,382,619

Mathematics
2 answers:
Sindrei [870]3 years ago
7 0
5,382,600 is going to be your answer

Anna35 [415]3 years ago
7 0
5,382,600 is your answer
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Suppose that 1 kg of Sodium-24 is reduced to 0.0156 kg in 90 hours. What is the half-life, in hours, of Sodium-24?​
N76 [4]

Answer:

14.99 hours

Step-by-step explanation:

The formula for half-life is given as,

R/R' = 2ᵃ/ᵇ...................... Equation 1

Where R= Original mass of sodium-24, R' = mass of Sodium-24 after disintegration, a = Total time taken for sodium-24 to disintegrate, b = half-life of sodiun-24.

Given: R = 1 kg, R' = 0.0156 kg, a = 90 hours

Substitute into equation 1 and solve for b

1/(0.0156) = 2⁹⁰/ᵇ

Taking the log of both side

log[1/(0.0156)] = log(2⁹⁰/ᵇ)

log[1/(0.0156)] = 90/b(log2)

90/b = log[1/(0.0156)]/log2

90/b = 6.0023

b = 90/6.0023

b =  14.99 hours

b = 14.99 hours.

Hence the half-life of Sodium-24 is 14.99 hours

7 0
3 years ago
Question and choices Are below
Vika [28.1K]

Answer:

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Step-by-step explanation:

Use the pythagorean theorem.

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2 years ago
A jetliner cruises 12 miles for every 60 gallons of fuel it uses . If it used 1,200 gallons of fuel how many miles did it cruise
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60g/12miles = 5g/mile
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3 0
3 years ago
Find the x and y intercepts of the line. Enter each answer as an ordered pair
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Joe purchased a tray of 48 petunias to plant in his garden. The graph shows points representing the number of flowers left to pl
Svet_ta [14]

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Step-by-step explanation:

7 0
2 years ago
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