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Cerrena [4.2K]
3 years ago
13

Isotope X has a half-life of 8.00 minutes. How much of a 75.0 g sample will remain

Mathematics
1 answer:
Oksana_A [137]3 years ago
6 0

After 8.00 min, 75.0/2 = 37.5 g of the sample remains.

After another 8.00 min (total 16.0 min), 37.5/2 = 18.75 g remains. (Equivalently, 75.0/2^2 g)

After another 8.00 min (total 24.0 min), 18.75/2 = 9.375 g remains. (Or 75.0/2^3 g)

Finally, after another 8.00 min (total 32.0 min), 9.375/2 = 4.6875 g remains (or 75.0/2^4 g), approximately 4.69 g.

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Consider the equation below -2(5x + 8) = 14 + 6x complete the statements below with the process used to achieve steps 1-4
Ad libitum [116K]

Step-by-step explanation:

1. Distribute the -2. multiply-2 with 5x and 8. it will be -10x-16=14+6x. For me, i make small numbers negative or positive than big ones. Add 16 to both sides. it will be -10x=30+6x. Subtract 6x. -10x-6x=-16x. Divide both sides by 16. x=30/16= 1 and 14/16

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3 years ago
4 pairs of pants for 22.60. what is the unit rate?​
Alona [7]

Answer:

$5.65

Step-by-step explanation:

Divide 22.6 / 4.

5.65

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8 0
3 years ago
What is the meaning of a list
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6 0
3 years ago
Find the future value if £7400 is<br> invested for 6 years at 12.8% p.a.
Free_Kalibri [48]

Answer:

5683.2 Euro's

Step-by-step explanation:

i=

p=7400 Euro's

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5 0
3 years ago
CAN SOMEONE JUST PLEASE ANSWER THIS ASAP FOR BRAINLIEST!!
aksik [14]

Answer:

F= 3x^2

Step-by-step explanation:

1) Multiplying exponents causes them to add, for instance if you were to multiply x^3 * x^4 the final product would be x^7. If you were to divide exponents then they would subtract.

2) Similarly in this problem  you would determine the missing factor by dividing the product from -10x^3

3)  Using the steps above, begin dividing.

-30x^5 / -10x^3

4) -30 divided by -10 is 3 and as mentioned in step number one, you subtract exponents whenever they are divided by each other.  5-3=2

5) Due to all of the steps mentioned above, The answer is 3x^2

6 0
3 years ago
Read 2 more answers
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