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alekssr [168]
2 years ago
6

The half-life of a radioactive isotope is the time it takes for a quantity of the Isotope to be reduced to half its initial mass

. Starting with 210 grams of a
radioactive isotope, how much will be left after 6 half-lives?
Round your answer to the nearest gram
Mathematics
1 answer:
Zepler [3.9K]2 years ago
3 0

Answer:

after 6 half lives: 210(1/2)^6= 3.28125

Step-by-step explanation:

isotope to be reduced to half its initial mass at first:

210(1/2)=105 half it is original weight

after second life: 210(1/2)^2=105(1/2)=52.5

after third : 210(1/2)^3=52.5/2=26.25

after fourth : 26.25/2=12.125

after fifth : 13.125/2

after 6 half lives: 210(1/2)^6= 3.28125

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Can you help me with this it’s so confusing plz help me with both is this
mars1129 [50]

Answer:

First picture: -4,913

Second picture: 20.25

Step-by-step explanation:

-17^5/-17^2 = -17^3

-17 × -17 × -17 = -4913

4.5^5/4.5^3 = 4.5^2

4.5 × 4.5 = 20.25

Do you see how I had the same whole number on the top and bottom? (17 was on top and 17 was on bottom)

The exponents were those tiny numbers you saw.

Whenever you are dividing by the same whole number (-17/-17), you can subtract exponents.

When you multiply the same whole number, you can add the exponents.

Hope this helps! Best of luck :)

5 0
2 years ago
1. Dan charges $15 per hour for walking dogs. What is the missing number in the table?
Dmitry_Shevchenko [17]
It’s c lololololololololop
8 0
2 years ago
Round 3160.9903 to the nearest tenths place
motikmotik
The tenths place is right after the decimal point. So, 3160.9903 can be 3160.9.
5 0
3 years ago
Read 2 more answers
Can 12/15 be simplify
Semmy [17]
Yes 12/15 can be simplified. 

To simplify 12/15 find the greatest common multiple. The <span> greatest common multiple of 12/15 is 3. Now divide 12/15 by 3. 
</span>
12 ÷ 3 = 4 
15 ÷ 3 = 5 

4/5 is the simplified version of 12/15


6 0
3 years ago
Identify the variables, the constant, the coefficients, and the exponents in the algebraic expression: 5x + 3y^{2} + 4. (The 2 i
blsea [12.9K]
The variables are: x, y
The constant is: 4
The coefficients are: 5, 3
The exponent is: y^2
5 0
3 years ago
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