3 years ago

after 24.0 days, 2.00 milligrams of an original 128.0 milligram sample remain. what is the half-life of the sample?

1 answer:

6 0

<span>(1/2)n = 0.015625
n log 0.5 = log 0.015625
n = log 0.5 / log 0.015625
n = 6</span><span>24 days / 6 half-lives = 4.00 days (the length of the half-life)

</span>

You might be interested in

Cody saves all his nickles. Today he is getting them out of his piggy bank and wrapping them to take to the bank. He finds he ha

Sav [38]

40x=360
Which means he needs 9 wrappers

6 0

3 years ago

Read 2 more answers

Write a proportion for each of the diagrams below and solve for the missing value.

Arada [10]

Answer:

x=7.5

Step-by-step explanation:

$\frac{8}{5} =\frac{12}{x}$

$8x=60$

$x=7.5$

8 0

3 years ago

The length of one side of a square city block is 462 meters. what is the perimeter of the block

trapecia [35]

The perimeter of any shape is just what you get when you add up all of the side lengths. We know that one side is 462 meters, and since a square has four equal sides, we can just mulitply 462 × 4 to get our perimeter, 1,848 meters.

3 0

3 years ago

Can Some Help Me. ?

Marysya12 [62]

Answer:

The answer is b Hope this helps!!! Tysm and tell me if i get it wrong

:3 Thanks!!!

4 0

3 years ago

Please help asap 25 pts

irinina [24]

D The graph is an absolute value function with vertex (-2, 0).

Look at the picture.