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ad-work [718]
3 years ago
12

You discovered 1000 grams of an unknown element called Coolium 23 that has a half life 23 days. How long will it take for you to

have 600 grams remaining.
Mathematics
1 answer:
Trava [24]3 years ago
4 0

Answer:

13.8 days

Step-by-step explanation:

In this case we can solve it by means of a rule of three, knowing the amount of life for 1000 grams, it must be proportional for 600 grams, like this:

grams   days

 1000     23

 600        x

x = 600 * 23/1000

x = 13.8

which means that for the 600 grams it would be an average life of 13.8 days.

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Which of the following describes the correct process for solving the equation 2x − 4 = 20 and arrives at the correct solution? A
Gelneren [198K]

Answer:

<u>The correct answer is A. Add 4 to both sides, and then divide by 2. The solution is x = 12.</u>

Step-by-step explanation:

1. For solving the question and understand which of the statements matches with the solution, let's proceed with the equation:

2x − 4 = 20

2x  - 4 + 4 = 20 + 4 (Adding 4 at both sides)

2x = 24

2x/2 = 24/2 (Dividing by 2 at both sides)

x = 12

<u>The correct answer is A. Add 4 to both sides, and then divide by 2. The solution is x = 12.</u>

8 0
2 years ago
If −8 + 3 = −88, then 4 =?<br> a) −64 b) −32<br> c) −40 d) 32
pychu [463]

Answer:

this question doed not make sense

Step-by-step explanation:

5 0
3 years ago
3. How many solutions does the system of equations have?
miskamm [114]

Answer:

oof i dont know this

Step-by-step explanation:


5 0
2 years ago
Stephanie has a total of 27 nickels and dimes. The total value of the coins is $1.95. Which system of equations can be used to f
Genrish500 [490]
The correct equation to use is A. n+d=27 0.05n+0.10d=1.95
5 0
3 years ago
If AC = 8x - 14 and EC = 2x + 11, solve for x.
Elan Coil [88]

Answer:

Step-by-step explanation:

8x-14=2x+11

-8 -8

-14=-6x+11

-11

-25=-6x

/-6

x=4.16

5 0
1 year ago
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