3 years ago

After 3 days a sample of radon-222 has decayed to 58% of its original amount.

1 answer:

6 0

The half-life of the radioactive substance can be determined through teh equation ln 2 = k (t 1/2) where k is equal to ln (1/(1-0.58)) / 3. Hence t 1/2 is equal to 2.40 days. To decay to 10% of the original amount, ln (1/0.90) / ( ln2) / 2.40, time is equal to 0.37 days.

You might be interested in

Use the eqation to solve for how many miles "m" the person rode their bike after "t" time.

Svetllana [295]

Answer:

Step-by-step explanation:

maybe some time else so see ya laters

5 0

2 years ago

A juice company produces 8,064 cartons of juice in 21 days. Each day, they produced the same number of cartons and delivered tho

KatRina [158]

8064 cartons in 21 days......8064/21 = 384 cartons per day

the cartons were delivered in cases of 6.....384 / 6 = 64 cases

each of 16 coffee shops received an equal number of cases..
64/16 = 4.....so each coffee shop received 4 cases per day <==

7 0

3 years ago

Read 2 more answers

Question is in the picture.

motikmotik

I think the perimeter is 64. If you divided the 4 sides of the window by 256, you get 64. Sorry if it's not right. I hope it is. c;

3 0

3 years ago

Read 2 more answers

I need help ASAP. Please solve and show <br><br> 3x-4+1=-2x-5+5x

USPshnik [31]

Answer:

$\large \boxed{\text{There is no solution}}$

Step-by-step explanation:

$\begin{array}{rcll}3x - 4 + 1 & = & -2x - 5 + 5x & \\3x - 3 & = & 3x - 5 & \text{Combined like terms on each side}\\-3 & = & -5 & \text{Subtracted 3x from each side}\\\end{array}\\\text{This is impossible. There is $\large \boxed{\textbf{no solution}}$ to the equation.}$

6 0

3 years ago

I really need help on my engineering homework.

schepotkina [342]

This is more like math homework

7 0

3 years ago